Logo: to the web site of Uppsala University

uu.sePublications from Uppsala University
Change search
Refine search result
123 1 - 50 of 106
CiteExportLink to result list
Permanent link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Rows per page
  • 5
  • 10
  • 20
  • 50
  • 100
  • 250
Sort
  • Standard (Relevance)
  • Author A-Ö
  • Author Ö-A
  • Title A-Ö
  • Title Ö-A
  • Publication type A-Ö
  • Publication type Ö-A
  • Issued (Oldest first)
  • Issued (Newest first)
  • Created (Oldest first)
  • Created (Newest first)
  • Last updated (Oldest first)
  • Last updated (Newest first)
  • Disputation date (earliest first)
  • Disputation date (latest first)
  • Standard (Relevance)
  • Author A-Ö
  • Author Ö-A
  • Title A-Ö
  • Title Ö-A
  • Publication type A-Ö
  • Publication type Ö-A
  • Issued (Oldest first)
  • Issued (Newest first)
  • Created (Oldest first)
  • Created (Newest first)
  • Last updated (Oldest first)
  • Last updated (Newest first)
  • Disputation date (earliest first)
  • Disputation date (latest first)
Select
The maximal number of hits you can export is 250. When you want to export more records please use the Create feeds function.
  • 1. Ahl, Matilda
    et al.
    Avdic, Una
    Strandberg, Maria Compagno
    Chugh, Deepti
    Andersson, Emelie
    Hållmarker, Ulf
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Sciences, Cardiology. Department of Internal Medicine, Mora Hospital, Mora, Sweden.
    James, Stefan
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Sciences, Cardiology.
    Deierborg, Tomas
    Ekdahl, Christine T
    Physical Activity Reduces Epilepsy Incidence: a Retrospective Cohort Study in Swedish Cross-Country Skiers and an Experimental Study in Seizure-Prone Synapsin II Knockout Mice2019In: Sports medicine - open, ISSN 2199-1170, Vol. 5, no 1, article id 52Article in journal (Refereed)
    Abstract [en]

    BACKGROUND: Epilepsy patients commonly exercise less than the general population. Animal studies indicate beneficial effects of physical activity in established epilepsy, while its effect on the development is currently less known.

    METHODS: Here, we investigated the incidence of epilepsy during 20 years in a cohort of participants from the long-distance Swedish cross-country ski race Vasaloppet (n = 197,685) and compared it to the incidence of non-participating-matched controls included in the Swedish population register (n = 197,684). Individuals diagnosed with diseases such as stroke and epilepsy before entering the race were excluded from both groups. Experimentally, we also determined how physical activity could affect the development of epilepsy in epilepsy-prone synapsin II knockout mice (SynIIKO), with and without free access to a running wheel.

    RESULTS: We identified up to 40-50% lower incidence of epilepsy in the Vasaloppet participants of all ages before retirement. A lower incidence of epilepsy in Vasaloppet participants was seen regardless of gender, education and occupation level compared to controls. The participants included both elite and recreational skiers, and in a previous survey, they have reported a higher exercise rate than the general Swedish population. Sub-analyses revealed a significantly lower incidence of epilepsy in participants with a faster compared to slower finishing time. Dividing participants according to specified epilepsy diagnoses revealed 40-50% decrease in focal and unspecified epilepsy, respectively, but no differences in generalized epilepsy. Voluntary exercise in seizure-prone SynIIKO mice for 1 month before predicted epilepsy development decreased seizure manifestation from > 70 to 40%. Brain tissue analyses following 1 month of exercise showed increased hippocampal neurogenesis (DCX-positive cells), while microglial (Iba1) and astrocytic activation (GFAP), neuronal Map2, brain-derived neurotrophic factor and its receptor tyrosine receptor kinase B intensity were unaltered. Continued exercise for additionally 2 months after predicted seizure onset in SynIIKO mice resulted in a 5-fold reduction in seizure manifestation (from 90 to 20%), while 2 months of exercise initiated at the time of predicted seizure development gave no seizure relief, suggesting exercise-induced anti-epileptogenic rather than anti-convulsive effect.

    CONCLUSION: The clinical study and the experimental findings in mice indicate that physical activity may prevent or delay the development of epilepsy.

    Download full text (pdf)
    fulltext
  • 2.
    Anderson, Cheryl B
    et al.
    epartment of Pediatrics, Baylor College of Medicine, Houston, TX, USA.
    Hagströmer, Maria
    Unit for Preventive Nutrition, Department of Biosciences at Novum, Karolinska Institutet, Huddinge, Sweden.
    Yngve, Agneta
    Unit for Preventive Nutrition, Department of Biosciences at Novum, Karolinska Institutet, Huddinge, Sweden.
    Validation of the PDPAR as an adolescent diary: effect of accelerometer cut points2005In: Medicine & Science in Sports & Exercise, ISSN 0195-9131, E-ISSN 1530-0315, Vol. 37, no 7, p. 1224-1230Article in journal (Refereed)
    Abstract [en]

    PURPOSE: To evaluate the validity of the Previous Day Physical Activity Recall (PDPAR) as a physical activity diary in adolescents using two accelerometer intensity classifications.

    METHODS: One hundred eighth graders (47 boys, 53 girls) used the PDPAR as a daily diary and wore MTI accelerometers for four consecutive days. Measured time spent in moderate (> or = 3 METs) and vigorous (> or = 6 METs) activity was based on two published MTI cut-point limits (that of Freedson et al./Trost et al. and that of Puyau et al.). Spearman rank order correlations and Bland-Altman plots were used to examine agreement between MTI and PDPAR diary estimates of activity.

    RESULTS: MTI estimates of mean minutes per day of total moderate to vigorous physical activity (MVPA) were 65.2 (+/-43.2) using the Freedson et al./Trost et al. cutoffs and 17.5 (+/-18.5) using those of Puyau et al., while students self-reported 105.1 (+/-80.1) min.d(-1). Significant relationships were observed between the diary and MTI for total MVPA using either the Freedson et al./Trost et al. (r = 0.42) or Puyau et al. (r = 0.41) cutoff as well as raw counts (r = 0.44). Plots showed reasonable agreement between the diary and Freedson et al./Trost et al. MTI estimates of MVPA for daily totals of < or = 60 min, but the Puyau et al. estimates were consistently lower. Diaries overestimated activity as time increased when compared to either MTI cut point, especially on vigorous activity.

    CONCLUSIONS: Time estimates of MVPA differed by assessment tool, but diary estimates showed adequate association with the MTI. Diaries reflected intensity-specific activity, corresponding most closely with the Freedson et al./Trost et al. classification of moderate, but substantially overestimated vigorous activity regardless of cut-point method. This is likely due to the measurement characteristics of the PDPAR, which classifies activities in 30-min blocks, as well as the nature of common activities in which high levels of intensity are not sustained.

  • 3.
    Andersson, Agneta
    Uppsala University, Disciplinary Domain of Humanities and Social Sciences, Faculty of Social Sciences, Department of Food, Nutrition and Dietetics.
    Glykemiskt index: ett osäkert verktyg för idrottaren2009In: Nordisk nutrition, ISSN 1654-8337, no 4, p. 21-23Article in journal (Other (popular science, discussion, etc.))
  • 4.
    Andersson, Agneta
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Public Health and Caring Sciences. Uppsala University, Disciplinary Domain of Humanities and Social Sciences, Faculty of Social Sciences, Department of Domestic Sciences.
    Idrottsnutrition2006In: Näringslära för högskolan, Liber AB, Stockholm , 2006, p. 394-423Chapter in book (Other (popular science, discussion, etc.))
  • 5.
    Andersson, Agneta
    et al.
    Uppsala University, Disciplinary Domain of Humanities and Social Sciences, Faculty of Social Sciences, Department of Food, Nutrition and Dietetics.
    Bakkman, Linda
    Berglund, Bo
    Reinebo, Peter
    Saltin, Bengt
    Kostrekommendationer för elitidrottare.: SOK:s kostpolicy för elitidrottare.2009Other (Other (popular science, discussion, etc.))
  • 6.
    Anens, Elisabeth
    et al.
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Neuroscience, Physiotherapy.
    Emtner, Margareta
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Neuroscience, Physiotherapy. Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Sciences, Respiratory Medicine and Allergology.
    Hellström, Karin
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Neuroscience, Physiotherapy.
    Exploratory Study of Physical Activity in Persons With Charcot-Marie-Tooth Disease2015In: Archives of Physical Medicine and Rehabilitation, ISSN 0003-9993, E-ISSN 1532-821X, Vol. 96, no 2, p. 260-268Article in journal (Refereed)
    Abstract [en]

    Objectives: To explore and describe the perceived facilitators and barriers to physical activity, and to examine the physical activity correlates in people with Charcot-Marie-Tooth (CMT) disease. Design: Cross-sectional survey study. Setting: Community-living subjects. Participants: Swedish people with CMT disease (N=44; men, 54.5%; median age, 59.5y [interquartile range, 45.3-64.8y]). Interventions: Not applicable. Main Outcome Measures: The survey included open-ended questions and standardized self-reported scales measuring physical activity, fatigue, activity limitation, self-efficacy for physical activity, fall-related self-efficacy, social support, and enjoyment of physical activity. Physical activity was measured by the Physical Activity Disability Survey-Revised. Results: Qualitative content analysis revealed that personal factors such as fatigue, poor balance, muscle weakness, and pain were important barriers for physical activity behavior. Facilitators of physical activity were self-efficacy for physical activity, activity-related factors, and assistive devices. Multiple regression analysis showed that self-efficacy for physical activity (beta=.41) and fatigue (beta=-.30) explained 31.8% of the variation in physical activity (F-2,F-40=10.78, P=.000). Conclusions: Despite the well-known benefits of physical activity, physical activity in people with CMT disease is very sparsely studied. These new results contribute to the understanding of factors important for physical activity behavior in people with CMT disease and can guide health professionals to facilitate physical activity behavior in this group of patients. (C) 2015 by the American Congress of Rehabilitation Medicine

  • 7. Ardern, Clare L.
    et al.
    Österberg, Annika
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Medicinska och farmaceutiska vetenskapsområdet, centrumbildningar mm, Centrum för klinisk forskning i Sörmland (CKFD).
    Tagesson, Sofi
    Gauffin, Hakan
    Webster, Kate E.
    Kvist, Joanna
    The impact of psychological readiness to return to sport and recreational activities after anterior cruciate ligament reconstruction2014In: British Journal of Sports Medicine, ISSN 0306-3674, E-ISSN 1473-0480, Vol. 48, no 22, p. 1613-U50Article in journal (Refereed)
    Abstract [en]

    Background This cross-sectional study aimed to examine whether appraisal of knee function, psychological and demographic factors were related to returning to the preinjury sport and recreational activity following anterior cruciate ligament (ACL) reconstruction. Method 164 participants completed a questionnaire battery at 1-7 years after primary ACL reconstruction. The battery included questionnaires evaluating knee self-efficacy, health locus of control, psychological readiness to return to sport and recreational activity, and fear of reinjury; and self-reported knee function in sport-specific tasks, knee-related quality of life and satisfaction with knee function. The primary outcome was returning to the preinjury sport or recreational activity. Results At follow-up, 40% (66/164) had returned to their preinjury activity. Those who returned had more positive psychological responses, reported better knee function in sport and recreational activities, perceived a higher knee-related quality of life and were more satisfied with their current knee function. The main reasons for not returning were not trusting the knee (28%), fear of a new injury (24%) and poor knee function (22%). Psychological readiness to return to sport and recreational activity, measured with the ACL-Return to Sport after Injury scale (was most strongly associated with returning to the preinjury activity). Age, sex and preinjury activity level were not related. Conclusions Less than 50% returned to their preinjury sport or recreational activity after ACL reconstruction. Psychological readiness to return to sport and recreation was the factor most strongly associated with returning to the preinjury activity. Including interventions aimed at improving this in postoperative rehabilitation programmes could be warranted to improve the rate of return to sport and recreational activities.

  • 8.
    Aurivillius, Pehr Fabian
    Uppsala University, Disciplinary Domain of Humanities and Social Sciences, Faculty of Philosophy.
    Circa exercitationes gymnicas observationes nonnullæ generaliores. Quas consensu ampliss. fac. phil. Ups. præside mag. Petro Fab. Aurivillio ... pro gradu philosophico publico examini subjicit Sveno Emanuel Thollander a sacris. Ostrogothus. In auditorio Gust. maj. d. XXIV. Maj. MDCCCVI. ... p. I.1806Dissertation (older thesis) (Other academic)
    Download full text (pdf)
    FULLTEXT01
  • 9.
    Axfors, Cathrine
    et al.
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Women's and Children's Health, Obstetrics and Reproductive Health Research. Stanford Univ, Meta Res Innovat Ctr Stanford METRICS, Stanford, CA 94025 USA.
    Wikström, Anna-Karin
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Women's and Children's Health.
    Sundström Poromaa, Inger
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Women's and Children's Health.
    Hållmarker, Ulf
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Sciences. Mora Hosp, Dept Internal Med, Mora, Sweden.
    Michaëlsson, Karl
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Surgical Sciences, Orthopaedics. Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Surgical Sciences, Medical epidemiology.
    Wallert, John
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Women's and Children's Health. Karolinska Inst, Dept Neurobiol Care Sci & Soc, Stockholm, Sweden.;Karolinska Inst, Ctr Psychiat Res, Dept Clin Neurosci, Huddinge, Sweden.;Stockholm Hlth Care Serv, Stockholm, Sweden.
    White, Richard A. A.
    Norwegian Inst Publ Hlth, Sect Sykdomspulsen Real Time Surveillance, Oslo, Norway.
    Skalkidou, Alkistis
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Women's and Children's Health.
    Pre-pregnancy participation and performance in world's largest cross-country ski race as a proxy for physical exercise and fitness, and perinatal outcomes: Prospective registry-based cohort study2023In: British Journal of Obstetrics and Gynecology, ISSN 1470-0328, E-ISSN 1471-0528, Vol. 130, no 8, p. 891-901Article in journal (Refereed)
    Abstract [en]

    Objective: Investigate associations between pre-pregnancy participation and performance in a demanding cross-country ski race (proxy for exercise volume and fitness) and perinatal outcomes. Pre-registered protocol: osf.io/aywg2.

    Design: Prospective cohort study.

    Setting: Based on entire overlap between the Vasaloppet registry and the population-based Swedish Pregnancy Register.

    Sample: All female Vasaloppet participants 1991-2017 with subsequent singleton delivery (skiers), and age- and county-matched non-skiers.

    Methods: We calculated odds ratios (ORs) for non-skiers versus skiers (model 1) and, among skiers, by performance (model 2), in Bayesian logistic regressions adjusted for socio-demographics, lifestyle factors, and comorbidities. We repeated calculations adjusting for early pregnancy body mass index (potential mediator) and explored robustness (selection/exposure settings; multiple comparisons correction).

    Main outcome measures: Twenty-nine important perinatal outcomes, predefined based on existing expert consensus.

    Results: Non-skiers (n = 194 384) versus skiers (n = 15 377) (and slower versus faster performance, not shown) consistently had higher odds of gestational diabetes mellitus (GDM) (OR 1.70, 95% highest density interval: 1.40-2.09), excessive gestational weight gain (GWG) (1.28, 1.22-1.38), psychiatric morbidity (1.60, 1.49-1.72), any caesarean section (CS) (1.34, 1.28-1.40), elective CS (1.39, 1.29-1.49), and large-for-gestational-age babies (> 90th percentile, 1.11, 1.04-1.18); lower odds of inadequate GWG (0.83, 0.79-0.88); and no associations with fetal/neonatal complications (e.g. preterm birth [1.09, 0.98-1.20], small for gestational age [SGA] [1.23, 1.05-1.45]). Adjustment for body mass index attenuated associations with excessive (1.20, 1.14-1.30) and inadequate GWG (0.87, 0.83-0.92) and large for gestational age (1.07, 1.00-1.13).

    Conclusion: Non-skiers compared with skiers, and slower versus faster performance, consistently displayed higher odds of GDM, excessive GWG, psychiatric morbidity, CS and large-for-gestational-age babies; and lower odds of inadequate GWG, after adjustment for socio-demographic and lifestyle factors and comorbidities. There were no associations with fetal/neonatal complications.

    Download full text (pdf)
    fulltext
  • 10.
    Bacchetti, Tiziana
    et al.
    Department of Life and Environmental Sciences, Marche Polytechnic University, Via Brecce Bianche, 60131 Ancona, Italy.
    Morresi, Camilla
    Department of Life and Environmental Sciences, Marche Polytechnic University, Via Brecce Bianche, 60131 Ancona, Italy.
    Ferretti, Gianna
    Department of Clinical Science and Odontostomatology, Marche Polytechnic University, Via Brecce Bianche, 60131 Ancona, Italy;Center for Health Promotion, Marche Polytechnic University, Via Brecce Bianche, 60131 Ancona, Italy.
    Larsson, Anders
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Sciences, Clinical Chemistry.
    Åkerfeldt, Torbjörn
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Sciences, Clinical Chemistry.
    Svensson, Michael
    Section of Sports Medicine, Department of Community Medicine and Rehabilitation, Umeå University, 90 187 Umeå, Sweden;Umeå School of Sport Sciences, Umeå University, 90 187 Umeå, Sweden.
    Effects of Seven Weeks of Combined Physical Training on High-Density Lipoprotein Functionality in Overweight/Obese Subjects2023In: Metabolites, ISSN 2218-1989, E-ISSN 2218-1989, Vol. 13, no 10, p. 1068-1068Article in journal (Refereed)
    Abstract [en]

    Our study aimed to investigate the effects of exercise on HDL composition and functional properties in overweight/obese subjects. Eighteen overweight/obese subjects (nine F and nine M, BMI = 30.3 ± 3 kg/m2) attended supervised training for 7 weeks. The protocol included combined resistance and conditioning training four to five times each week. The activity of the antioxidant enzyme paraoxonase-1 (PON1) associated with HDL was evaluated in all subjects before and after the training intervention. Moreover, myeloperoxidase (MPO) levels and oxidative stress markers (ox-LDLs and total antioxidant capacity) were studied in the serums of the subjects. At the end of the intervention, the activity of PON1 was increased (p < 0.0001), and MPO levels and the MPO/PON1 ratio were decreased (p < 0.0001). In addition, a significant improvement in muscle strength and maximal oxygen uptake (VO2max) (p < 0.0001) and a significant reduction in total and visceral adipose tissue mass (p < 0.001) and waist circumference (p < 0.008), without any significant decrease in body weight, were observed. A significant correlation was established between serum MPO/PON ratios, HDL redox activity and ox-LDLs. In conclusion, our results demonstrate that exercise training, without modifications of dietary habits, improved HDL functionality in overweight/obese adults, without any significant reduction in BMI or modifications of glucose and lipid biochemical parameters.

    Download full text (pdf)
    fulltext
  • 11.
    Bagge, A. S. Lindqvist
    et al.
    Univ Gothenburg, Gothenburg, Sweden.
    Rosen, T.
    Univ Gothenburg, Gothenburg, Sweden.
    Fahlke, C.
    Univ Gothenburg, Gothenburg, Sweden.
    Ehrnborg, C.
    Univ Gothenburg, Gothenburg, Sweden.
    Eriksson, B. O.
    Univ Gothenburg, Gothenburg, Sweden.
    Moberg, T.
    Univ Gothenburg, Gothenburg, Sweden.
    Thiblin, Ingemar
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Surgical Sciences, Forensic Medicine.
    Somatic effects of AAS abuse: A 30-years follow-up study of male former power sports athletes2017In: Journal of Science and Medicine in Sport, ISSN 1440-2440, E-ISSN 1878-1861, Vol. 20, no 9, p. 814-818Article in journal (Refereed)
    Abstract [en]

    Objectives

    The aim of the present study was to investigate the association between somatic health and former abuse of AAS in former elite male athletes 30 years after the end of their active sports career.

    Design

    Retrospective follow-up study.

    Methods

    N = 996 former elite male athletes were sent a questionnaire concerning sociodemographic variables, previous and past sport activity and lifetime prevalence of seeking professional help for health problems. N = 683 (68.6%) answered the questionnaire. The lifetime prevalence of AAS-abuse was 21% (n = 143), while 79% (n = 540) did not admit having ever used AAS.

    Results

    Former AAS-abuse was associated with tendon ruptures (p = 0.01), depression (p = 0.001), anxiety (p = 0.01) and lower prevalence of prostate hypertrophy (p = 0.01) and decreased libido (p = 0.01). Former advanced AAS-abusers had higher anxiety (p = 0.004) compared to the former less advanced AAS-abusers. Moreover, former advanced AAS-abusers, compared to AAS-naïves, reported more psychiatric problems (p = 0.002), depression (p = 0.003) and anxiety (p = 0.00).

    Conclusions

    A former AAS-abuse seems to be associated with some somatic and mental health problem, although a former less advanced AAS-abuse is related to lower incidence of prostate hypertrophy. The results raise the question whether some of these associations might be dose- and frequency dependent. These findings should however be seen as hypothesis generating and further studies are needed.

  • 12.
    Becirbegovic, Haris
    et al.
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Neuroscience, Physiotherapy.
    Svensson, Niklas
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Neuroscience, Physiotherapy.
    Shining a light on soccer injuries in Africa: A descriptive and comparative Cohort study on soccer injuries in Rwanda and Swaziland2018Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Background/Problem definition

    There are few epidemiological studies on soccer injuries in Africa.The prevalence and variables linked to injuries needs to be recognized. Better mapping and knowledge about injury prevalence/incidence could play an important role in helping players sustain a career in soccer without major injuries. 

    Objective

    To explore prevalence, mechanism, severity of injuries and injured body parts in players from top divisions of Rwanda and Swaziland during season 2012/2013.

    Methods

    The study was of a retrospective, descriptive, comparative design with a quantitative approach on a cohort of n=738 players from Rwanda and Swaziland. Injury frequencies from data sets was analyzed. Data was analyzed using the F-MARC injury-questionnaire.

    Results

    The subpopulations had varying frequencies of injuries. Age 18-24 sustained the most injuries in both countries, n=215. There was a significant difference of injury prevalence, 71,8% of the Swaziland players sustained injuries. In Rwanda 34,8% sustained injuries. However, the severity of injuries was significantly higher in the Rwanda.

    Conclusion

    The results of the findings in this study shows that the players in Swaziland had almost a two-time higher injury prevalence. Although the reason to this can only be speculated in by the authors. Further research is encouraged to increase the mapping of injuries in Africa, and factors associated to them.

    Download full text (pdf)
    fulltext
  • 13.
    Bengtsson, Victor
    et al.
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Women's and Children's Health, Physiotherapy and behavioral medicine.
    Berglund, Lars
    Community medicine and rehabilitation, Umeå university.
    Öhberg, Fredrik
    Department of Radiation Sciences, Umeå university.
    Aasa, Ulrika
    Community medicine and rehabilitation, Umeå university.
    Thoracolumbar and Lumbopelvic Spinal Alignment During the Barbell Back Squat: A Comparison Between Men and Women2023In: International Journal of Sports Physical Therapy, E-ISSN 2159-2896, Vol. 18, no 4, p. 820-830Article in journal (Refereed)
    Abstract [en]

    Background: Maintaining neutral spinal alignment is considered important when performing the barbell back squat exercise. Since male and female lifters may differ in injury location it is important to examine whether they differ in spinal alignment during the back squat.

    Objectives: The study aimed to quantify the spinal alignment in the upper and lower lumbar spine during the barbell back squat exercise in male and female lifters. Secondary aims were to compare alignment during the back squat to standing habitual lumbar spine alignment and determine whether male and female lifters differ in these aspects.

    Study design: Observational, Cross-sectional.

    Methods: Competitive power- and weightlifters were recruited and performed three repetitions of the barbell back squat exercise using a load equivalent to 70% of their one-repetition maximum. Spinal alignment and range of motion were measured using inertial measurement units placed on the thoracic, lumbar and sacral spine. Data was presented descriptively and comparisons between men and women as well as spinal alignment in four different positions were done with a factorial repeated measures analysis of variance.

    Results: Twenty-three (14 males, 9 females) were included. During execution of the squat, spinal alignment adjustments in the lumbar spine were made in all three planes of movement, compared to the start position, in both male and female lifters. Compared to their standing habitual posture, all lifters adjusted their upper lumbar spine to a less lordotic position when in the start position of the back squat (standing upright with the barbell on their back). Only male lifters assumed a less lordotic alignment in their lower lumbar spine in the start position compared their habitual posture.

    Conclusions: Adjustments of spinal alignment, predominantly in the sagittal plane, are made during execution of the back squat in both male and female lifters. Further, lifters adopt a less lordotic alignment with a heavy barbell on their upper back, more so in male than female lifters. In conclusion, it seems that spinal alignment changes noticeably during the barbell back squat.

    Download full text (pdf)
    fulltext
  • 14.
    Bilberg, Johan
    Uppsala University, Disciplinary Domain of Humanities and Social Sciences, Faculty of Philosophy.
    Orchestra sive de saltationibus veterum dissertatio; qvam consentiente & adprobante ampliss. facult. phil. Upsal. præside ... Joanne Bilbergh ... publico examini subjicit Isacus I. Mackej Gestr. In auditorio Gustav. majori ad. d. 2 Maji an. 16851685Dissertation (older thesis) (Other academic)
    Download full text (pdf)
    FULLTEXT01
    Download (zip)
    ATTACHMENT01
  • 15.
    Bjorke, Ann Christin Helgesen
    et al.
    Univ Agder, Dept Publ Hlth Sport & Nutr, Kristiansand, Norway.
    Sweegers, Maike G.
    Vrije Univ, Amsterdam Univ, Amsterdam Publ Hlth Inst, Dept Epidemiol & Biostat,Med Ctr, Amsterdam, Netherlands;Vrije Univ, Amsterdam Univ, Canc Ctr Amsterdam, Med Ctr, Amsterdam, Netherlands.
    Buffart, Laurien M.
    Vrije Univ, Amsterdam Univ, Amsterdam Publ Hlth Inst, Dept Epidemiol & Biostat,Med Ctr, Amsterdam, Netherlands;Vrije Univ, Amsterdam Univ, Canc Ctr Amsterdam, Med Ctr, Amsterdam, Netherlands;Vrije Univ, Amsterdam Univ, Dept Med Oncol, Med Ctr, Amsterdam, Netherlands.
    Raastad, Truls
    Norwegian Sch Sport Sci, Oslo, Norway.
    Nygren, Peter
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Immunology, Genetics and Pathology, Experimental and Clinical Oncology.
    Berntsen, Sveinung
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Public Health and Caring Sciences, Lifestyle and rehabilitation in long term illness. Univ Agder, Dept Publ Hlth Sport & Nutr, Kristiansand, Norway.
    Which exercise prescriptions optimize V̇O2max during cancer treatment?: a systematic review and meta-analysis2019In: Scandinavian Journal of Medicine and Science in Sports, ISSN 0905-7188, E-ISSN 1600-0838, Vol. 29, no 9, p. 1274-1287Article, review/survey (Refereed)
    Abstract [en]

    The aims of the present systematic review and meta-analysis were to investigate the effect of exercise on maximal oxygen uptake ((V) over dot O(2)max) and to investigate whether exercise frequency, intensity, duration, and volume are associated with changes in (V) over dotO(2)max among adult patients with cancer undergoing treatment. Medline and Embase through OvidSP were searched to identify randomized controlled trials. Two reviewers extracted data and assessed the risk of bias. The overall effect size and differences in effects for different intensities and frequencies were calculated on change scores and post-intervention (V) over dot O(2)max data, and the meta-regression of exercise duration and volumes was analyzed using the Comprehensive Meta-Analysis software. Fourteen randomized controlled trials were included in the systematic review, comprising 1332 patients with various cancer types receiving (neo-) adjuvant chemo-, radio-, and/or hormone therapy. Exercise induced beneficial changes in (V) over dotO(2)max compared to usual care (effect size = 0.46, 95% Confidence Interval = 0.23-0.69). Longer session duration (P = 0.020), and weekly duration (P = 0.010), larger weekly volume (P < 0.001), and shorter intervention duration (P = 0.005) were significantly associated with more beneficial changes in (V) over dot O(2)max. No differences in effects between subgroups with respect to frequency and intensity were found. In conclusion, exercise has beneficial effects on (V) over dotO(2)max in patients with cancer undergoing (neo-) adjuvant treatment. As interventions with larger exercise volumes and longer session durations resulted in larger beneficial changes in (V) over dot O(2)max, exercise frequency, intensity, and duration should be considered carefully for sufficient exercise volume to induce changes in (V) over dot O(2)max for this patient group.

  • 16.
    Blauwet, Cheri
    et al.
    Harvard Med Sch, Spaulding Rehabil Hosp, Dept Phys Med & Rehabil, Boston, MA 02115 USA;Harvard Med Sch, Brigham & Womens Hosp, Boston, MA 02115 USA;Kelley Adapt Sports Res Inst, Boston, MA USA.
    Webborn, Nick
    Univ Brighton, Ctr Sport & Exercise Med & Sci, Brighton, E Sussex, England.
    Kissick, James
    Carleton Univ, Univ Ottawa, Sports Med Clin, Dept Family Med, Ottawa, ON, Canada.
    Lexell, Jan
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Neuroscience, Lexell: Rehabilitation Medicine.
    Stomphorst, Jaap
    Isala Klin, Dept Sport Med, Zwolle, Netherlands.
    van de Vliet, Peter
    Int Paralymp Comm, Med & Sci Dept, Bonn, Germany.
    Lazarovski, Dimitrije
    Int Paralymp Comm, World Para Snow Sports, Bonn, Germany.
    Derman, Wayne
    Stellenbosch Univ, Inst Sport & Exercise Med, Dept Surg Sci, Cape Town, South Africa;Int Olymp Comm, Res Ctr, Cape Town, South Africa.
    When van Mechelen's sequence of injury prevention model requires pragmatic and accelerated action: the case of para alpine skiing in Pyeong Chang 20182019In: British Journal of Sports Medicine, ISSN 0306-3674, E-ISSN 1473-0480, Vol. 53, no 22, p. 1391-1392Article in journal (Other academic)
  • 17.
    Bojsen-Moller, Emil
    et al.
    Swedish Sch Sport & Hlth Sci, Dept Phys Act & Hlth, GIH, Stockholm, Sweden..
    Wang, Rui
    Swedish Sch Sport & Hlth Sci, Dept Phys Act & Hlth, GIH, Stockholm, Sweden.;Karolinska Inst, Div Clin Geriat, Dept Neurobiol Care Sci & Soc, Stockholm, Sweden..
    Nilsson, Jonna
    Swedish Sch Sport & Hlth Sci, Dept Phys Act & Hlth, GIH, Stockholm, Sweden..
    Heiland, Emerald G
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Surgical Sciences, Medical epidemiology. Department of Physical Activity and Health, The Swedish School of Sport and Health Sciences, GIH, Stockholm, Sweden..
    Boraxbekk, Carl-Johan
    Copenhagen Univ Hosp Amager & Hvidovre, Danish Res Ctr Magnet Resonance DRCMR, Ctr Funct & Diag nost Imaging & Res, Copenhagen, Denmark.;Umeå Univ, Dept Radiat Sci, Diagnost Radiol, Umeå, Sweden.;Copenhagen Univ Hosp Bispebjerg, Inst Sports Med Copenhagen ISMC, Copenhagen, Denmark.;Copenhagen Univ Hosp Bispebjerg, Dept Neurol, Copenhagen, Denmark.;Univ Copenhagen, Inst Clin Med, Fac Med & Hlth Sci, Copenhagen, Denmark..
    Kallings, Lena V.
    Swedish Sch Sport & Hlth Sci, Dept Phys Act & Hlth, GIH, Stockholm, Sweden..
    Ekblom, Maria
    Swedish Sch Sport & Hlth Sci, Dept Phys Act & Hlth, GIH, Stockholm, Sweden.;Karolinska Inst, Dept Neurosci, Stockholm, Sweden..
    The effect of two multi-component behavior change interventions on cognitive functions2022In: BMC Public Health, E-ISSN 1471-2458, Vol. 22, no 1, article id 1082Article in journal (Refereed)
    Abstract [en]

    Background: We previously reported the effects of two cluster-randomized 6-month multi-component workplace interventions, targeting reducing sedentary behavior or increasing physical activity among office workers, on movement behaviors and cardiorespiratory fitness. The primary aim of this study was to investigate the effects of these interventions on cognitive functions compared to a wait-list control group. The secondary aims were to examine if changes in cognition were related to change in cardiorespiratory fitness or movement behaviors and if age, sex, or cardiorespiratory fitness moderated these associations. Methods: Both interventions encompassed multi-components acting on the individual, environmental, and organizational levels and aimed to change physical activity patterns to improve mental health and cognitive function. Out of 263 included participants, 139 (mean age 43 years, 76% females) completed a neuropsychological test battery and wore accelerometers at baseline and 6-month follow-up. The intervention effect (aim 1) on cognitive composite scores (i.e., Executive Functions, Episodic Memory, Processing Speed, and Global Cognition) was investigated. Additionally, associations between changes in movement behaviors and cardiorespiratory fitness, and changes in cognition were examined (aim 2). Moreover, age, sex, and cardiorespiratory fitness level were investigated as possible moderators of change associations (aim 3). Results: Overall, cognitive performance improved from baseline to follow-up, but the change did not differ between the intervention groups and the control group. Changes in cardiorespiratory fitness or any movement behavior category did not predict changes in cognitive functions. The association between changes in time in bed and changes in both Executive Function and Global Cognition were moderated by age, such that a more positive relation was seen with increasing age. A less positive association was seen between changes in sedentary behavior and Processing Speed for men vs. women, whereas higher cardiorespiratory fitness was related to a more positive association between changes in moderate-intensity physical activity and Global Cognition. Conclusion: The lack of an intervention effect on cognitive functions was expected since the intervention did not change movement behavior or fitness. Age, sex, and cardiorespiratory fitness level might moderate the relationships between movement behaviors and cognitive functions changes.

    Download full text (pdf)
    FULLTEXT01
  • 18.
    Brooke, Hannah L.
    et al.
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Public Health and Caring Sciences, Lifestyle and rehabilitation in long term illness. Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Surgical Sciences, Medical epidemiology.
    Mazzoni, Anne-Sophie
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Public Health and Caring Sciences, Lifestyle and rehabilitation in long term illness.
    Buffart, Laurien M.
    Radboud Univ Nijmegen Med Ctr, Radboud Inst Hlth Sci, Dept Physiol, Nijmegen, Netherlands..
    Berntsen, Sveinung
    Univ Agder, Dept Sport Sci & Phys Educ, Kristiansand, Norway..
    Nordin, Karin
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Public Health and Caring Sciences, Lifestyle and rehabilitation in long term illness.
    Demmelmaier, Ingrid
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Public Health and Caring Sciences, Lifestyle and rehabilitation in long term illness.
    Patterns and determinants of adherence to resistance and endurance training during cancer treatment in the Phys-Can RCT2022In: BMC Sports Science, Medicine and Rehabilitation, E-ISSN 2052-1847 , Vol. 14, no 1, article id 155Article in journal (Refereed)
    Abstract [en]

    Background: Knowledge regarding adherence is necessary to improve the specificity of exercise interventions during cancer treatment. We aimed to determine adherence to resistance and endurance training interventions in parallel; identify subgroups with similar adherence characteristics; and examine determinants of these subgroups. Methods: In the Phys-Can randomised controlled trial, participants (n=577, 81% women, mean(SD) age 59(12) years, and 50% with BMI >= 25 kg/m(2)) starting (neo-) adjuvant treatment for breast, colorectal or prostate cancer were randomized to 6-month of high (HI) or low-to-moderate intensity (LMI) supervised, group-based resistance training and individual home-based endurance training, with or without behavior change support. Adherence was calculated as performed exercise volume as a proportion of prescribed exercise volume (0-100%), overall (HI and LMI groups) and for frequency, intensity, type and time (FITT principles) (HI group). Adherence to resistance training was plotted against adherence to endurance training overall and for each FITT principle. K-means cluster analysis was used to identify subgroups with similar adherence characteristics. Potential determinants of subgroup membership were examined using multinomial logistic regression. Results: We found a positive curvilinear correlation between adherence to resistance and endurance training overall. A similar correlation was seen for adherence to frequency of resistance vs. endurance training in the HI group. In the HI group, adherence to resistance training intensity and time was > 80% for almost all participants. For endurance training adherence ranged from 0 to 100% for each of the FITT principles. Three clusters were identified, representing low, mixed, and high adherence to resistance and endurance training overall. Participants with higher age (Relative risk ratio [95% Cl]; LMI: 0.86[0.77-0.96], HI: 0.83[0.74-0.93]), no behaviour change support (LMI: 0.11 [0.02-0.56], HI: 0.20[0.05-0.85]), higher cardiorespiratory fitness (LMI: 0.81 [0.69-0.94], HI: 0.80[0.69-0.92]), more fatigue (according to the reduced activity subscale of the MFI questionnaire) (LMI: 0.48[0.31-0.73], HI: 0.69[0.52-0.93]) or higher quality of life (LMI: 0.95[0.90-1.00], HI: 0.93[0.88-0.98]) were less likely to be in the low than the high adherence cluster whether randomised to LMI or HI training. Other determinants were specific to those randomised to LMI or HI training. Conclusions: In an exercise intervention during cancer treatment, adherence to resistance and endurance training were positively correlated. Personalisation of interventions and additional support for some subgroups of participants may improve adherence.

    Download full text (pdf)
    FULLTEXT01
  • 19.
    Brynjulfsen, Trine
    et al.
    Univ Agder, Fac Hlth & Sport Sci, POB 422, N-4604 Kristiansand, Norway..
    Demmelmaier, Ingrid
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Public Health and Caring Sciences, Lifestyle and rehabilitation in long term illness. Univ Agder, Fac Hlth & Sport Sci, POB 422, N-4604 Kristiansand, Norway..
    Berntsen, Sveinung
    Univ Agder, Fac Hlth & Sport Sci, POB 422, N-4604 Kristiansand, Norway..
    Foyn, Tonje Hellum
    Univ Agder, Fac Hlth & Sport Sci, POB 422, N-4604 Kristiansand, Norway..
    Andersen, Oddbjorn Klomsten
    Norwegian Sch Sport Sci, Dept Sport Med, Oslo, Norway..
    Stang, Julie
    Norwegian Sch Sport Sci, Dept Sport Med, Oslo, Norway..
    Sigdestad, Joakim Brodvik
    Univ Agder, Fac Hlth & Sport Sci, POB 422, N-4604 Kristiansand, Norway..
    Stensrud, Trine
    Norwegian Sch Sport Sci, Dept Sport Med, Oslo, Norway..
    Tufte, Kristine
    Norwegian Sch Sport Sci, Dept Sport Med, Oslo, Norway..
    Nielsen, Anette
    Univ Oslo, Fac Med, Oslo, Norway..
    Westergren, Thomas
    Univ Agder, Fac Hlth & Sport Sci, POB 422, N-4604 Kristiansand, Norway..
    Motivation for physical activity in adolescents with asthma2021In: Journal of Asthma, ISSN 0277-0903, E-ISSN 1532-4303, Vol. 58, no 9, p. 1247-1255Article in journal (Refereed)
    Abstract [en]

    Objective:We explored motivation for physical activity (PA) and exercise in adolescents with asthma who entered and continued a 10-week play-based exercise intervention. Methods:Eighteen adolescents with asthma, aged 13-17 years, participated in a 10-week play- and interval-based indoor exercise intervention during winter and autumn months. Semi-structured focus group interviews were conducted in weeks 2 and 8, focusing on motivation for PA and exercise, as well as field observations of exercise sessions in weeks 2, 6, and 8. The first interview was analyzed separately from the second one and descriptive observational data were obtained using thematic analysis and self-determination theory as a framework. Results:In the first round of focus group interviews, participants (n= 18) described amotivation and motivation for PA within the following five themes: "teachers' lack of asthma knowledge", "embarrassment over asthma symptoms", "not being able to keep pace with peers", "seasonal challenges", and "mastering fun physical activities". Based on the second interview (n= 14) and descriptive observational data (n= 18), participants reported and revealed amotivation and motivation for PA within the following four themes: "understanding and relatedness", "social support", "competition", and "mastering fun activities". Conclusion:We conclude that play-based exercises designed for groups of adolescents with asthma can support motivation for PA and exercise and reduce social and asthma-specific barriers.

    Download full text (pdf)
    FULLTEXT01
  • 20. Börjesson, Mats
    et al.
    Ekblom, Örjan
    Arvidsson, Daniel
    Heiland, Emerald G.
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Surgical Sciences, Medical epidemiology. Department of Physical Activity and Health, Swedish School of Sport and Health Sciences GIH, Stockholm, Sweden.
    Väisänen, Daniel
    Bergström, Göran
    Ekblom-Bak, Elin
    Correlates of cardiorespiratory fitness in a population-based sample of middle-aged adults: cross-sectional analyses in the SCAPIS study2022In: BMJ Open, E-ISSN 2044-6055, Vol. 12, no 12, article id e066336Article in journal (Refereed)
    Abstract [en]

    OBJECTIVES: This study aimed to identify main sex-specific correlates of cardiorespiratory fitness (CRF) in a population-based, urban sample of Swedish adults.

    DESIGN: Cross-sectional.

    SETTING: Multi-site study at university hospitals, data from the Gothenburg site.

    PARTICIPANTS: A total of 5308 participants (51% women, aged 50-64 years) with a valid estimated VO2max, from submaximal cycle test, in the Swedish CArdioPulmonary bioImage Study (SCAPIS), were included.

    PRIMARY AND SECONDARY OUTCOMES: A wide range of correlates were examined including (a) sociodemographic and lifestyle behaviours, (b) perceived health, anthropometrics and chronic conditions and (c) self-reported as well as accelerometer-derived physical activity and sedentary behaviours. Both continuous levels of estimated VO2max as well as odds ratios (OR) and confidence intervals (CI)s of low VO2max (lowest sex-specific tertile) were reported.

    RESULTS: In multivariable regression analyses, higher age, being born abroad, short education, high waist circumference, poor perceived health, high accelerometer-derived time in sedentary and low in vigorous physical activity, as well as being passive commuter, correlated independently and significantly with low VO2max in both men and women (OR range 1.31-9.58). Additionally in men, financial strain and being an ex-smoker are associated with higher odds for low VO2max (OR 2.15; 95% CI 1.33 to 3.48 and OR 1.40; 95% CI 1.09 to 1.80), while constant stress with lower odds (OR 0.61; 95% CI 0.43 to 0.85). Additionally in women, being a regular smoker is associated with lower odds for low VO2max (OR 0.64; 95% CI 0.45 to 0.92).

    CONCLUSIONS: The present study provides important reference material on CRF and correlates of CRF in a general middle-aged population, which can be valuable for future research, clinical practice and public health work. If relations are causal, increased knowledge about specific subgroups will aid in the development of appropriate, targeted interventions.

    Download full text (pdf)
    fulltext
  • 21.
    Craig, Cora L
    et al.
    Canadian Fitness and Lifestyle Research Institute, Ottawa, Canada.
    Marshall, Alison L
    chool of Human Movement Studies, University of Queensland, Brisbane, Australia.
    Sjöström, Michael
    PrevNut at Novum, Karolinska Institutet, Stockholm, Sweden.
    Bauman, Adrian E
    Centre for Physical Activity and Health, School of Public Health and Community Medicine, University of NSW, Sydney, Australia.
    Booth, Michael L
    Centre for Advancement of Adolescent Health, New Childrens Hospital, Westmead, Sydney, Australia.
    Ainsworth, Barbara E
    Department of Epidemiology and Biostatistics, Department of Exercise Science, Norman J. Arnold School of Public Health, University of South Carolina, Columbia, SC, USA.
    Pratt, Michael
    Division of Physical Activity and Nutrition, Centers for Disease Control, Atlanta, GA; 8 Department of Psychology, San Diego State University, San Diego, CA, USA.
    Ekelund, Ulf
    PrevNut at Novum, Karolinska Institutet, Stockholm, Sweden.
    Yngve, Agneta
    PrevNut at Novum, Karolinska Institutet, Stockholm, Sweden.
    Sallis, James F
    Department of Psychology, San Diego State University, San Diego, CA, USA.
    Oja, Pekka
    UKK Institute, Tampere, Finland.
    International physical activity questionnaire: 12-country reliability and validity2003In: Medicine & Science in Sports & Exercise, ISSN 0195-9131, E-ISSN 1530-0315, Vol. 35, no 8, p. 1381-1395Article in journal (Refereed)
    Abstract [en]

    BACKGROUND: Physical inactivity is a global concern, but diverse physical activity measures in use prevent international comparisons. The International Physical Activity Questionnaire (IPAQ) was developed as an instrument for cross-national monitoring of physical activity and inactivity.

    METHODS: Between 1997 and 1998, an International Consensus Group developed four long and four short forms of the IPAQ instruments (administered by telephone interview or self-administration, with two alternate reference periods, either the "last 7 d" or a "usual week" of recalled physical activity). During 2000, 14 centers from 12 countries collected reliability and/or validity data on at least two of the eight IPAQ instruments. Test-retest repeatability was assessed within the same week. Concurrent (inter-method) validity was assessed at the same administration, and criterion IPAQ validity was assessed against the CSA (now MTI) accelerometer. Spearman's correlation coefficients are reported, based on the total reported physical activity.

    RESULTS: Overall, the IPAQ questionnaires produced repeatable data (Spearman's rho clustered around 0.8), with comparable data from short and long forms. Criterion validity had a median rho of about 0.30, which was comparable to most other self-report validation studies. The "usual week" and "last 7 d" reference periods performed similarly, and the reliability of telephone administration was similar to the self-administered mode.

    CONCLUSIONS: The IPAQ instruments have acceptable measurement properties, at least as good as other established self-reports. Considering the diverse samples in this study, IPAQ has reasonable measurement properties for monitoring population levels of physical activity among 18- to 65-yr-old adults in diverse settings. The short IPAQ form "last 7 d recall" is recommended for national monitoring and the long form for research requiring more detailed assessment.

  • 22.
    Cunningham, Gregory
    et al.
    Univ Hosp Geneva, Dept Surg, Div Orthoped & Trauma Surg, Geneva, Switzerland..
    Zanchi, Davide
    Univ Hosp Geneva, Dept Imaging & Med Informat, Geneva, Switzerland..
    Emmert, Kirsten
    Univ Hosp Geneva, Dept Imaging & Med Informat, Geneva, Switzerland.;Ecole Polytech Fed Lausanne, Inst Bioengn, Lausanne, Switzerland..
    Kopel, Rotem
    Univ Hosp Geneva, Dept Imaging & Med Informat, Geneva, Switzerland.;Ecole Polytech Fed Lausanne, Inst Bioengn, Lausanne, Switzerland..
    Van De Ville, Dimitri
    Univ Hosp Geneva, Dept Imaging & Med Informat, Geneva, Switzerland.;Ecole Polytech Fed Lausanne, Inst Bioengn, Lausanne, Switzerland..
    Laedermann, Alexandre
    Univ Hosp Geneva, Dept Surg, Div Orthoped & Trauma Surg, Geneva, Switzerland.;Univ Geneva, Fac Med, CH-1227 Geneva, Switzerland..
    Haller, Sven
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Surgical Sciences, Radiology. Univ Geneva, Fac Med, CH-1227 Geneva, Switzerland.;Univ Hosp Freiburg, Dept Neuroradiol, Freiburg, Germany.;Ctr Diagnost Radiol Carouge, Affidea, Carouge, Switzerland..
    Hoffmeyer, Pierre
    Univ Hosp Geneva, Dept Surg, Div Orthoped & Trauma Surg, Geneva, Switzerland.;Univ Geneva, Fac Med, CH-1227 Geneva, Switzerland..
    Neural Correlates of Clinical Scores in Patients with Anterior Shoulder Apprehension2015In: Medicine & Science in Sports & Exercise, ISSN 0195-9131, E-ISSN 1530-0315, Vol. 47, no 12, p. 2612-2620Article in journal (Refereed)
    Abstract [en]

    Introduction Anterior shoulder apprehension is a commonly reported complaint in anterior shoulder instability, which may lead to patient morbidity and impede shoulder function. It is the result of a cognitively complex mechanism, which includes anxiety, salience, fear, and anticipation. Purpose The aim of this prospective case-control study was to correlate five clinically established scores using functional magnetic resonance imaging to assess brain activation patterns in patients with apprehension related to anterior shoulder instability. Methods This study includes 28 consecutive male right-handed patients ( mean +/- SEM, 26.8 +/- 1.2 yr) with positive shoulder apprehension test and 10 healthy matched control participants without apprehension or a history of instability. Task- related and functional connectivity functional magnetic resonance imaging activation patterns occurring during apprehension video cue stimulation were correlated with five clinical tests and scores: Visual Analog Scale ( VAS), Rowe score for instability, Simple Shoulder Test, Subjective Shoulder Value ( SSV), and Western Ontario Shoulder Instability ( WOSI). Results Rowe, pain VAS, and WOSI scores correlated with prefrontal cortex, dorsolateral prefrontal cortex, dorsomedial prefrontal cortex, somatosensory area, and parieto-occipital and temporal areas (default mode network). Rowe score additionally correlated with frontal pole, anterior midcingulate cortex, and visual areas. Moreover, SSV correlated with task-related brain activity in the bilateral precentral gyrus, bilateral postcentral gyrus, and bilateral superior parietal lobe. Conclusions Overall, Rowe score provides the strongest link between shoulder apprehension and brain level alterations as it correlates with the highest number of independent components involving areas responsible for both motor and cognitive functions, whereas pain VAS and WOSI occupy an intermediately strong link recruiting less brain networks. Finally, Simple Shoulder Test and SSV have the weakest link at the brain level.

  • 23.
    Dahlman, Lars
    Uppsala University, Disciplinary Domain of Humanities and Social Sciences, Faculty of Philosophy.
    Dissertatio gradualis, de exercitiis corporis, quam, suffragio ampliss. facult. philosoph. in regia academia Upsaliensi, sub præsidio ... Laurentii Dahlman ... publico examini modeste defert, alumnus Thunianus, Olavus Willmark, Smolandus. In aud. Carol. maj. d. XXVI. April. anni MDCCLXIV. H. a. m. s.1764Dissertation (older thesis) (Other academic)
    Download full text (pdf)
    FULLTEXT01
    Download (zip)
    ATTACHMENT01
  • 24.
    Derman, Wayne
    et al.
    Stellenbosch Univ, Inst Sport & Exercise Med, Dept Surg Sci, Cape Town, South Africa;Int Olymp Comm Res Ctr, Cape Town, South Africa.
    Runciman, Phoebe
    Stellenbosch Univ, Inst Sport & Exercise Med, Dept Surg Sci, Cape Town, South Africa;Int Olymp Comm Res Ctr, Cape Town, South Africa.
    Jordaan, Esme
    MRC, Biostat Unit, Parow, South Africa;Univ Western Cape, Stat & Populat Studies Dept, Bellville, South Africa.
    Schwellnus, Martin
    Univ Pretoria, SEMLI, Fac Hlth Sci, Pretoria, South Africa;IOC Res Ctr, Pretoria, South Africa.
    Blauwet, Cheri
    Spaulding Rehabil Hosp, Dept Phys Med & Rehabil, Boston, MA USA;Harvard Med Sch, Brigham & Womens Hosp, Boston, MA 02115 USA.
    Webborn, Nick
    Univ Brighton, Ctr Sport & Exercise Sci & Med SESAME, Eastbourne, England.
    Lexell, Jan
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Neuroscience, Lexell: Rehabilitation Medicine.
    van de Vliet, Peter
    Int Paralymp Comm, Med & Sci Dept, Bonn, Germany.
    Kissick, James
    Univ Ottowa, Carleton Univ, Sport Med Clin, Dept Family Med, Ottawa, ON, Canada.
    Stomphorst, Jaap
    Isala Klin, Dept Sports Med, Zwolle, Netherlands.
    Lee, Young-Hee
    Yonsei Univ, Wonju Coll Med, Rehabil Med, Seoul, South Korea.
    Kim, Keun-Suh
    Yonsei Univ, Yonsei Inst Sports Sci & Exercise Med, Seoul, South Korea.
    High incidence of injuries at the Pyeongchang 2018 Paralympic Winter Games: a prospective cohort study of 6804 athlete days2020In: British Journal of Sports Medicine, ISSN 0306-3674, E-ISSN 1473-0480, Vol. 54, no 1, p. 38-43Article in journal (Refereed)
    Abstract [en]

    Objective: To describe the epidemiology of sports injury at the Pyeongchang 2018 Paralympic Winter Games.

    Methods: 567 athletes from 49 countries were monitored daily for 12 days over the Pyeongchang 2018 Paralympic Winter Games (6804 athlete days). Injury data were obtained daily from teams with their own medical support (41 teams and 557 athletes) and teams without their own medical support (8 teams and 10 athletes) through two electronic data capturing systems.

    Results: 112 of 567 athletes (19.8%) reported a total of 142 injuries, with an injury incidence rate (IR) of 20.9 per 1000 athlete days (95% CI 17.4 to 25.0). The highest IR was reported for para snowboard (IR of 40.5 per 1000 athlete days [95% CI 28.5 to 57.5]; p<0.02), particularly in the lower limb and head/face/neck anatomical areas. Across all sports at the Games, acute traumatic injuries (IR of 16.2 per 1000 athlete days [95% CI 13.2 to 19.8]) and injuries to the shoulder/arm/elbow complex (IR of 5.7 per 1000 athlete days [95% CI 4.2 to 7.8]) were most common. However, most injuries (78.9%) did not require time loss.

    Conclusion: The new Paralympic Winter Games sport of Para snowboard requires attention to implement actions that will reduce injury risk. The shoulder was the most injured single joint-a consistent finding in elite para sport.

  • 25.
    Derman, Wayne
    et al.
    Stellenbosch Univ, Inst Sport & Exercise Med, Dept Surg, Div Orthopaed, Cape Town, South Africa; IOC Res Ctr South Africa, Cape Town, South Africa.
    Runciman, Phoebe
    Stellenbosch Univ, Inst Sport & Exercise Med, Dept Surg, Div Orthopaed, Cape Town, South Africa; IOC Res Ctr South Africa, Cape Town, South Africa.
    Jordaan, Esme
    MRC, Biostat Unit, Cape Town, South Africa; Univ Western Cape, Stat & Populat Studies Dept, Cape Town, South Africa.
    Schwellnus, Martin
    IOC Res Ctr South Africa, Cape Town, South Africa; Univ Pretoria, Fac Hlth Sci, Sport Exercise Med & Lifestyle Inst, Pretoria, South Africa.
    Blauwet, Cheri
    Harvard Med Sch, Dept Phys Med & Rehabil, Spaulding Rehabil Hosp, Boston, MA USA; Harvard Med Sch, Womens Hosp, Boston, MA USA.
    Webborn, Nick
    Univ Brighton, Ctr Sport & Exercise Sci & Med, Eastbourne, England.
    Lexell, Jan
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Neuroscience, Lexell: Rehabilitation Medicine.
    van de Vliet, Peter
    Int Paralymp Comm, Med & Sci Dept, Bonn, Germany.
    Kissick, James
    Univ Ottawa, Carleton Univ Sport Med Clin, Dept Family Med, Ottawa, ON, Canada.
    Stomphorst, Jaap
    Isala Klin, Dept Sports Med, Zwolle, Netherlands.
    Lee, Young-Hee
    Yonsei Univ, Wonju Coll Med, Rehabil Med, Wonju, South Korea.
    Kim, Keun-Suh
    Yonsei Univ, Yonsei Inst Sports Sci & Exercise Med, Seoul, South Korea.
    Incidence rate and burden of illness at the Pyeongchang 2018 Paralympic Winter Games2019In: British Journal of Sports Medicine, ISSN 0306-3674, E-ISSN 1473-0480, Vol. 53, no 17, p. 1099-1104Article in journal (Refereed)
    Abstract [en]

    Objective To describe the incidence rate (IR) and illness burden (IB) at the Pyeongchang 2018 Paralympic Winter Games.

    Methods A total of 567 athletes from 49 countries were monitored for 12 days over the Pyeongchang 2018 Games (6804 athlete days). Illness data were obtained daily from teams with (41 teams, 557 athletes) and teams without (8 teams, 10 athletes) their own medical support, through electronic data capturing systems.

    Results There were 87 illnesses reported, with an illness IR of 12.8 illnesses per 1000 athlete days (95% CI 10.2 to 16.0) and IB of 6.8 days lost per 1000 athlete days (95% CI 3.4 to 13.5). The highest IR was reported for Para snowboard (IR of 19.7 [95% CI 12.0 to 32.2]). Illnesses in the respiratory system (IR of 4.1 [95% CI 2.9 to 5.9]; IB of 1.4 [95% CI 0.6 to 3.0]), skin and subcutaneous system (IR of 2.5 [95% CI 1.5 to 4.1]; IB of 0.6 [95% CI 0.1 to 2.9]), and eye and ocular adnexa (IR of 1.6 [95% CI 0.9 to 3.1]; IB of 0.5 [95% CI 0.1 to 3.3]) were the most common.

    Conclusion This is the first study to report both the IR and IB in this setting. There was a high IR of illness in the new sport of Para snowboard. The respiratory system had both the highest IR and IB.

     

  • 26.
    Edberger Persson, Jakob
    et al.
    Uppsala University, Disciplinary Domain of Science and Technology, Mathematics and Computer Science, Department of Information Technology, Division of Systems and Control.
    Danielsson, Emil
    Uppsala University, Disciplinary Domain of Science and Technology, Mathematics and Computer Science, Department of Information Technology, Division of Systems and Control.
    Avatar Playing Style: From analysis of football data to recognizable playing styles2022Independent thesis Advanced level (professional degree), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    Football analytics is a rapid growing area which utilizes conventional data analysis and computational methods on gathered data from football matches. The results emerging out of this can give insights of performance levels when it comes to individual football players, different teams and clubs. A difficulty football analytics struggles with daily is to translate the analysis results into actual football qualities and knowledge which the wider public can understand. In this master thesis we therefore take on the ball event data collected from football matches and develop a model which classifies individual football player’s playing styles, where the playing styles are well known among football followers. This is carried out by first detecting the playing positions: ’Strikers’, ’Central midfielders’, ’Outer wingers’, ’Full backs’, ’Centre backs’ and ’Goalkeepers’ using K-Means clustering, with an accuracy of 0.89 (for Premier league 2021/2022) and 0.84 (for Allsvenskan 2021). Secondly, we create a simplified binary model which only classifies the player’s playing style as "Offensive"/"Defensive". From the bad results of this model we show that there exist more than just these two playing styles. Finally, we use an unsupervised modelling approach where Principal component analysis (PCA) is applied in an iterative manner. For the playing position ’Striker’ we find the playing styles: ’The Target’, ’The Artist’, ’The Poacher’ and ’The Worker’ which, when comparing with a created validation data set, give a total accuracy of 0.79 (best of all positions and the only one covered in detail in the report due to delimitations). 

    The playing styles can, for each player, be presented visually where it is seen how well a particular player fits into the different playing styles. Ultimately, the results in the master thesis indicates that it is easier to find playing styles which have clear and obvious on-the-ball-actions that distinguish them from other players within their respective position. Such playing styles, easier to find, are for example "The Poacher" and "The Target", while harder to find playing styles are for example " The Box-to-box" and "The Inverted". Finally, conclusions are that the results will come to good use and the goals of the thesis are met, although there still exist a lot of improvements and future work which can be made. 

    Developed models can be found in a simplified form on the GitHub repository: https://github.com/Sommarro-Devs/avatar-playing-style. The report can be read stand-alone, but parts of it are highly connected to the models and code in the GitHub repository. 

    Download full text (pdf)
    fulltext
  • 27.
    Ekelund, Ulf
    et al.
    Örebro universitet, Institutionen för hälsovetenskap och medicin.
    Poortvliet, Eric
    Unit for Preventive Nutrition, Department of Medical Nutrition, Karolinska Institutet, Huddinge, Sweden.
    Nilsson, Andreas
    Örebro universitet, Institutionen för hälsovetenskap och medicin.
    Yngve, Agneta
    Unit for Preventive Nutrition, Department of Medical Nutrition, Karolinska Institutet, Huddinge, Sweden.
    Holmberg, Anders
    Department of Statistics, Örebro University, 701 82 Örebro, Sweden.
    Sjöström, Michael
    Department of Physical Education and Health, Örebro University, Örebro, Sweden; Unit for Preventive Nutrition, Department of Medical Nutrition, Karolinska Institutet, Huddinge, Sweden.
    Physical activity in relation to aerobic fitness and body fat in 14- to 15-year-old boys and girls2001In: European Journal of Applied Physiology, ISSN 1439-6319, E-ISSN 1439-6327, Vol. 85, no 3-4, p. 195-201Article in journal (Refereed)
    Abstract [en]

    The purpose of this study was to examine the strength of the relationship between different variables of physical activity and aerobic fitness and body fat in adolescent boys and girls. Activity energy expenditure (AEE), time spent in a sedentary state, and time spent engaged in moderate and vigorous physical activity (MVPA, > or = 50% peak oxygen uptake, VO2peak) were assessed by the minute-by-minute heart rate monitoring method in 82 randomly selected 14- to 15-year olds (42 boys, 40 girls). Body fat was determined by measuring skinfold thicknesses. VO2peak was measured by indirect calorimetry. Somatic maturity level was determined by percentages of adult (i.e. 18 years) height attained at examination. AEE was related to aerobic fitness for both genders (boys, r = 0.30, P = 0.056; girls, r = 0.45, P = 0.003). For boys, there was a significant relationship between maturity level and VO2peak (r = 0.48, P < 0.001). For both genders, body fat was significantly and negatively related to VO2peak (r = -0.48 and r = -0.43, P < 0.01). Body fat and maturity explained 47% of the variation in VO2peak in boys, whereas AEE and body fat explained 22% of the variation in VO2peak in girls. No significant associations between physical activity variables and the data on body fat were observed. The total amount of physical activity (AEE) was related to VO2peak, at least in adolescent girls. Although VO2peak seems to be influenced by the maturity level in adolescent boys, the data support the promotion of a daily active lifestyle among young people.

  • 28.
    Ekelund, Ulf
    et al.
    Örebro universitet, Hälsovetenskapliga institutionen.
    Poortvliet, Eric
    Yngve, Agneta
    Hurtig-Wennlöf, Anita
    Örebro universitet, Institutionen för klinisk medicin.
    Nilsson, Andreas
    Örebro universitet, Hälsovetenskapliga institutionen.
    Sjöström, Michael
    Heart rate as an indicator of the intensity of physical activity in human adolescents2001In: European Journal of Applied Physiology, ISSN 1439-6319, E-ISSN 1439-6327, Vol. 85, no 3-4, p. 244-249Article in journal (Refereed)
    Abstract [en]

    The aims of this study were, in a group of adolescents, firstly to identify the absolute heart rates (HR) and the percentages of maximal heart rates (HRmax) corresponding to 40%, 60% and 80% of peak oxygen uptake (PVO2), secondly to identify absolute and relative (%PVO2) oxygen uptakes (VO2) corresponding to HR of 120, 140 and 160 beats.min-1, and thirdly to examine a possible effect of fatness and fitness on the relationship between HR and VO2. The subjects were 127 (60 boys, 67 girls) adolescents with a mean age of 14.8 (SD 0.3) years. The HR and VO2 were measured by means of an incremental exercise test to exhaustion. Linear regressions were performed for the HR-VO2 and VO2-HR relationships using absolute and relative (%HRmax, %PVO2) data for each individual. From these regressions, target HR and VO2 were computed. Average target HR corresponding to 40%, 60% and 80% of PVO2 were: 119 (SD 9), 145 (SD 9), 171 (SD 8), and 120 (SD 10), 146 (SD 8), 172 (SD 8) beats.min-1 for boys and girls, respectively. Average VO2 corresponding to HR of 120, 140 and 160 beats.min-1 were: 22 (SD 5), 30 (SD 5), 38 (SD 6) and 18 (SD 4), 24 (SD 4), 31 (SD 4) mlO2.kg-1.min-1 for boys and girls, respectively. An analysis of covariance showed a significant fitness effect (P < 0.001) for predicted VO2 at all HR studied. The results suggest that the use of absolute HR to define exercise intensity levels when assessing young people's physical activity using HR monitoring detracts from the validity of the interpretation of the data.

  • 29.
    Ekelund, Ulf
    et al.
    Örebro universitet, Institutionen för hälsovetenskap och medicin.
    Sjöström, Michael
    Unit for Preventive Nutrition, Department of Medical Nutrition, Karolinska Institutet, Stockholm, Sweden;.
    Yngve, Agneta
    Unit for Preventive Nutrition, Department of Medical Nutrition, Karolinska Institutet, Stockholm, Sweden;.
    Nilsson, Andreas
    Örebro universitet, Institutionen för hälsovetenskap och medicin.
    Total daily energy expenditure and pattern of physical activity measured by minute-by-minute heart rate monitoring in 14-15 year old Swedish adolescents2000In: European Journal of Clinical Nutrition, ISSN 0954-3007, E-ISSN 1476-5640, Vol. 54, no 3, p. 195-202Article in journal (Refereed)
    Abstract [en]

    OBJECTIVE: To assess total daily energy expenditure (TDEE) and patterns of physical activity among Swedish male and female adolescents and to relate the amount and intensity of physical activity to existing recommendations (energy expenditure equal to or above 12.4 kJ/kg/day or accumulation of 30 min/day in moderate physical activity equal to 4.5 times sedentary energy expenditure or more).

    DESIGN: TDEE, physical activity level (PAL=TDEE/BMR), energy expenditure (EE) and time spent in different intensities of physical activity were assessed by using minute-by-minute heart rate monitoring in combination with laboratory measured sedentary energy expenditure (SEE) and peak oxygen uptake.

    SETTING: Department of Physical Education and Health, Orebro University, and Department of Clinical Physiology, Orebro Medical Centre Hospital, Sweden.

    SUBJECTS: Eighty-two 14-15 y old adolescents (42 boys, 40 girls) from the city of Orebro, randomly selected through a two-stage sampling procedure.

    RESULTS: TDEE was 12.8 MJ/day and 10.0 MJ/day for boys and girls respectively (P<0.001) and PAL was 1.74 and 1.67 (NS). Forty-four percent and 47%, respectively, of TDEE referred to EE in physical activity, of which 70% for both genders referred to light physical activity (corresponding to <4.5 times SEE). Eleven boys and 14 girls had an EE lower than 12.4 kJ/kg/day and/or did not accumulate 30 min/day in physical activity >/=4.5 SEE. Those (n=20) with the highest PAL values (>2.01 and 1.81, respectively) spent 149 min/day at a >/=4.5 SEE intensity level compared to 40 min/day for those (n=30) with the lowest PAL values (<1.55 and 1.45, respectively).

    CONCLUSIONS: Swedish adolescent boys and girls are similarly physically active. The major amount of time devoted to physical activity refers to light physical activity. At least thirty percent of adolescents seem not to achieve appropriate levels of physical activity considered to be beneficial for health.

  • 30.
    Ekelund, Ulf
    et al.
    Örebro universitet, Institutionen för hälsovetenskap och medicin.
    Sjöström, Michael
    Unit for Preventive Nutrition, Department of Medical Nutrition, Karolinska Institutet, Stockholm, Sweden.
    Yngve, Agneta
    Unit for Preventive Nutrition, Department of Medical Nutrition, Karolinska Institutet, Stockholm, Sweden.
    Poortvliet, Eric
    Unit for Preventive Nutrition, Department of Medical Nutrition, Karolinska Institutet, Stockholm, Sweden.
    Nilsson, Andreas
    Örebro universitet, Institutionen för hälsovetenskap och medicin.
    Fröberg, Karsten
    Institute of Sport Science and Clinical Biomechanics, University of Southern Denmark, Odense, Denmark.
    Wedderkopp, Niels
    Institute of Sport Science and Clinical Biomechanics, University of Southern Denmark, Odense, Denmark.
    Westerterp, Klaas
    Department of Human Biology, Maastricht University, Maastricht, The Netherlands.
    Physical activity assessed by activity monitor and doubly labeled water in children2001In: Medicine & Science in Sports & Exercise, ISSN 0195-9131, E-ISSN 1530-0315, Vol. 33, no 2, p. 275-281Article in journal (Refereed)
    Abstract [en]

    PURPOSE: To validate the Computer Science and Application's (CSA) activity monitor for assessment of the total amount of physical activity during two school-weeks in 9-yr-old children and to develop equations to predict total energy expenditure (TEE) and activity energy expenditure (AEE) from activity counts and anthropometric variables.

    METHODS: A total of 26 children (15 boys and 11 girls, mean age 9.1 +/- 0.3 yr) were monitored for 14 consecutive days. TEE was simultaneously measured by the doubly labeled water method. Averaged activity counts (counts.min(-1)) were compared with data on: 1) TEE, 2) AEE = TEE minus basal metabolic rate (BMR; estimated from predictive equations), and 3) daily physical activity level (PAL = TEE/BMR).

    RESULTS: Physical activity determined by activity counts was significantly related to the data on energy expenditures: TEE (r = 0.39; P < 0.05), AEE (r = 0.54; P < 0.01), and PAL (r = 0.58; P < 0.01). Multiple stepwise regression analysis showed that TEE was significantly influenced by gender, body composition (body weight or fat free mass), and activity counts (R(2) = 0.54--0.60). AEE was significantly influenced by activity counts and gender (R(2) = 0.45). There were no significant differences between activity counts and PAL in discriminating among activity levels with "low" (PAL < 1.56), "moderate" (1.57 < or = PAL > or = 1.81), and "high" (PAL > 1.81) intensity.

    CONCLUSION: Activity counts from the CSA activity monitor seems to be a useful measure of the total amount of physical activity in 9-yr-old children. Activity counts contributed significantly to the explained variation in TEE and was the best predictor of AEE.

  • 31.
    Ekelund, Ulf
    et al.
    MRC Epidemiology Unit, Cambridge, United Kingdom; Department of Physical Education and Health, Örebro University, Örebro, Sweden; MRC Epidemiology Unit, Strangeways Research Laboratory, Worts Causeway, Cambridge, United Kingdom .
    Yngve, Agneta
    PREVNUT at Novum, Karolinska Institutet, Stockholm, Sweden .
    Brage, Sören
    Department of Physical Education and Health, Örebro University, Örebro, Sweden; Institute of Sport Science and Clinical Biomechanics, University of Southern Denmark, Odense, Denmark .
    Westerterp, Klaas
    Department of Human Biology, Maastricht University, Maastricht, Netherlands .
    Sjöström, Michael
    PREVNUT at Novum, Karolinska Institutet, Stockholm, Sweden .
    Body movement and physical activity energy expenditure in children and adolescents: how to adjust for differences in body size and age2004In: American Journal of Clinical Nutrition, ISSN 0002-9165, E-ISSN 1938-3207, Vol. 79, no 5, p. 851-856Article in journal (Refereed)
    Abstract [en]

    BACKGROUND: Physical activity data in children and adolescents who differ in body size and age are influenced by whether physical activity is expressed in terms of body movement or energy expenditure.

    OBJECTIVE: We examined whether physical activity expressed as body movement (ie, accelerometer counts) differs from physical activity energy expenditure (PAEE) as a function of body size and age.

    DESIGN: This was a cross-sectional study in children [n = 26; (+/-SD) age: 9.6 +/- 0.3 y] and adolescents (n = 25; age: 17.6 +/- 1.5 y) in which body movement and total energy expenditure (TEE) were simultaneously measured with the use of accelerometry and the doubly labeled water method, respectively. PAEE was expressed as 1) unadjusted PAEE [TEE minus resting energy expenditure (REE); in MJ/d], 2) PAEE adjusted for body weight (BW) (PAEE. kg(-1). d(-1)), 3) PAEE adjusted for fat-free mass (FFM) (PAEE. kg FFM(-1). d(-1)), and 4) the physical activity level (PAL = TEE/REE).

    RESULTS: Body movement was significantly higher (P = 0.03) in children than in adolescents. Similarly, when PAEE was normalized for differences in BW or FFM, it was significantly higher in children than in adolescents (P = 0.03). In contrast, unadjusted PAEE and PAL were significantly higher in adolescents (P < 0.01).

    CONCLUSIONS: PAEE should be normalized for BW or FFM for comparison of physical activity between children and adolescents who differ in body size and age. Adjusting PAEE for FFM removes the confounding effect of sex, and therefore FFM may be the most appropriate body-composition variable for normalization of PAEE. Unadjusted PAEE and PAL depend on body size.

  • 32.
    Ekelund, Ulf
    et al.
    Unit for Preventive Nutrition, Department of Medical Nutrition, Karolinska Institutet, Stockholm; Department of Physical Education and Health, Örebro University, Sweden.
    Yngve, Agneta
    Unit for Preventive Nutrition, Department of Medical Nutrition, Karolinska Institutet, Stockholm.
    Sjöström, Michael
    Unit for Preventive Nutrition, Department of Medical Nutrition, Karolinska Institutet, Stockholm; Department of Physical Education and Health, Örebro University, Sweden.
    Total daily energy expenditure and patterns of physical activity in adolescents assessed by two different methods1999In: Scandinavian Journal of Medicine and Science in Sports, ISSN 0905-7188, E-ISSN 1600-0838, Vol. 9, no 5, p. 257-264Article in journal (Refereed)
    Abstract [en]

    Minute-by-minute heart rate monitoring and an activity diary were used simultaneously during three days in 30 randomly selected adolescents (16 boys, 14 girls; mean age 15.0+/-1.0). Total daily energy expenditure (TDEE) and its components (energy expenditure during sleep, during rest and in physical activity) and times spent at different intensity levels (sedentary, light, moderate physical activity and vigorous physical activity) were compared. TDEE from heart rate monitoring averaged 10.9+/-2.7 MJ x d(-1) compared to 11.3+/-2.3 MJ x d(-1) from the activity diary (NS). The limits of agreement (mean+/-2 SD) were -3.54 MJ x d(-1) and 2.74 MJ x d(-1). There was no significant difference for any of the TDEE components between the methods (MANOVA). A significant method effect (P<0.001) was observed for time spent in sedentary and light physical activity (MANOVA). No significant difference was observed for time spent in moderate and vigorous physical activity. According to this, heart rate monitoring and activity diary are comparable for group assessment of TDEE and its components, and for estimating time spent in moderate and vigorous physical activity. The activity diary underestimated time spent in moderate and vigorous physical activity for inactive subjects and consequently overestimated highly active subjects.

  • 33.
    Ekelund, Ulf
    et al.
    Unit for Preventive Nutrition, Department of Medical Nutrition, Karolinska Institutet, Stockholm, Sweden; Department of Physical Education and Health, Örebro of University, Örebro, Sweden .
    Yngve, Agneta
    Unit for Preventive Nutrition, Department of Medical Nutrition, Karolinska Institutet, Stockholm, Sweden .
    Sjöström, Michael
    Unit for Preventive Nutrition, Department of Medical Nutrition, Karolinska Institutet, Stockholm, Sweden; Department of Physical Education and Health, Örebro of University, Örebro, Sweden.
    Westerterp, Klaas
    Department of Human Biology, Maastricht University, Maastricht, Netherlands .
    Field evaluation of the Computer Science and Application's Inc. Activity monitor during running and skating training in adolescent athletes2000In: International Journal of Sports Medicine, ISSN 0172-4622, E-ISSN 1439-3964, Vol. 21, no 8, p. 586-592Article in journal (Refereed)
    Abstract [en]

    This study investigated the validity of the CSA activity monitor for assessment of the total amount of physical activity in adolescent athletes. Activity data were compared to data on daily energy expenditure and its derivatives measured by the doubly labeled water method. Seven athletes (speed skaters) with a mean age of 18.2+/-1.1 y were monitored twice (off-season and pre-season) by the activity monitor for eight consecutive days. The primary training during the off-season period was running whereas the pre-season period mainly involved skate training (i.e. inline skating, slideboard training, and skating imitations). Activity counts were significantly correlated to all energy estimates during the off-season period (r=0.93-0.96; P<0.01) whereas not during the pre-season period (r=0.32-0.57). A two-way multivariate analysis of variance showed a significant period effect for activity counts (668+/-163 vs. 548+/-91; P=0.026) whereas not for total daily energy expenditure (15.7+/-2.1 MJ x d(-1) vs. 16.0+/-1.0 MJ x d(-1); P=0.71). The relationship between activity counts and total daily energy expenditure seems to be affected by different training conditions. Therefore these circumstances have to be carefully considered in the interpretation of activity monitor data.

  • 34.
    Ekelund, Ulf
    et al.
    Unit for Preventive Nutrition at Novum, Department of Medical Nutrition/Biosciences, Karolinska Institutet, Stockholm, Sweden; Department of Physical Education and Health, Örebro University, Sweden.
    Yngve, Agneta
    Unit for Preventive Nutrition at Novum, Department of Medical Nutrition/Biosciences, Karolinska Institutet, Stockholm, Sweden.
    Westerterp, Klaas
    Department of Human Biology, Maastricht University, Maastricht, The Netherlands.
    Sjöström, Michael
    Unit for Preventive Nutrition at Novum, Department of Medical Nutrition/Biosciences, Karolinska Institutet, Stockholm, Sweden.
    Energy expenditure assessed by heart rate and doubly labeled water in young athletes2002In: Medicine & Science in Sports & Exercise, ISSN 0195-9131, E-ISSN 1530-0315, Vol. 34, no 8, p. 1360-1366Article in journal (Refereed)
    Abstract [en]

    PURPOSE: To compare total energy expenditure (TEE) estimated by the FLEX heart rate (HR) method with that measured by the doubly labeled water (DLW) technique in young speed skaters. We hypothesized that the accuracy of FLEX HR-estimated TEE would be affected by a) the definition of the FLEX HR and b) the type of training regimen.

    METHODS: Eight young athletes (mean age 18.2 +/- 1.3 yr) underwent measurements during two 10-d training periods: an off-season period with voluntary training (predominantly running) and a preseason period mainly focused on skating technique training. TEE was measured simultaneously by the DLW and FLEX HR methods. FLEX HR1 was defined as the mean of the HRs during all resting calibration activities and the lowest HR during exercising calibration activities. FLEX HR2 was defined as the mean of the highest HR during resting activities and the lowest HR during exercising.

    RESULTS: ANOVA showed that FLEX HR1 was significantly lower than FLEX HR2 (mean of both periods; 77 +/- 5 vs 84 +/- 6 beats.min(-1); P = 0.004). TEE values obtained by DLW were 16.8 +/- 3.8 and 16.9 +/- 2.9 MJ.d(-1) in the two periods, respectively. TEE values calculated from FLEX HR1 were 17.8 +/- 3.6 and 17.4 +/- 2.6 MJ.d(-1), and those from FLEX HR2 17.1 +/- 3.1 and 17.0 +/- 2.7 MJ.d-1, respectively. No significant period (P = 0.83) or method (P = 0.44) effect on TEE was observed.

    CONCLUSION: FLEX HR-estimated TEE was not affected by the definition of the FLEX HR or by the type of training regimen as compared with TEE measured by the DLW method in young athletes.

  • 35.
    Ekelund, Ulf
    et al.
    Unit for Preventive Nutrition, Department of Medical Nutrition/Biosciences, Karolinska Institutet, Stockholm, Sweden; Department of Physical Education and Health, Örebro University, Örebro, Sweden; .
    Åman, Jan
    Örebro universitet, Hälsoakademin.
    Yngve, Agneta
    Unit for Preventive Nutrition, Department of Medical Nutrition/Biosciences, Karolinska Institutet, Stockholm, Sweden .
    Renman, Cecilia
    Department of Pediatrics, Örebro Medical Center, Örebro, Sweden .
    Westerterp, Klaas
    Department of Human Biology, Maastricht University, Maastricht, Netherlands.
    Sjöström, Michael
    Unit for Preventive Nutrition, Department of Medical Nutrition/Biosciences, Karolinska Institutet, Stockholm, Sweden .
    Physical activity but not energy expenditure is reduced in obese adolescents: a case-control study2002In: American Journal of Clinical Nutrition, ISSN 0002-9165, E-ISSN 1938-3207, Vol. 76, no 5, p. 935-941Article in journal (Refereed)
    Abstract [en]

    BACKGROUND: The influence of physical activity on body weight in children and adolescents is controversial.

    OBJECTIVE: The objective was to test the hypothesis that the intensity and duration of physical activity differ between obese and normal-weight adolescents, with no difference in estimated energy expenditure.

    DESIGN: We compared physical activity in 18 (8 males, 10 females) obese [body mass index (in kg/m(2)) > 30] adolescents (14-19 y) with that in a matched, normal-weight (BMI < 27) control group. Total energy expenditure (TEE) was measured with the doubly labeled water method, and physical activity was measured simultaneously by accelerometry. The physical activity level was determined as the ratio of TEE to the resting metabolic rate (RMR) and activity energy expenditure as 0.9 TEE minus RMR. Accelerometry data included total physical activity (counts x min(-1) x d(-1)), accumulated and continuous duration of activity, and continuous 10-min periods of physical activity of moderate intensity.

    RESULTS: There was no significant difference in adjusted (analysis of covariance) TEE, RMR, or AEE between groups. The physical activity level was significantly lower (P < 0.05) in the obese group. No sex x group interaction was observed. Differences in total physical activity (P < 0.001), accumulated time (P < 0.05), continuous time (P < 0.01), and continuous 10-min periods of physical activity of moderate intensity (P < 0.01) were observed between groups.

    CONCLUSIONS: Obese adolescents are less physically active than are normal-weight adolescents, but physical activity-related energy expenditure is not significantly different between groups. The data suggest that physical activity is not necessarily equivalent to the energy costs of activity.

  • 36.
    Ekström, Lena
    et al.
    Department of Laboratory Medicine, Division of Clinical Pharmacology Karolinska Institutet Stockholm Sweden.
    Mous, Dinah
    Department of Laboratory Medicine, Division of Clinical Pharmacology Karolinska Institutet Stockholm Sweden.
    Heiland, Vincent
    Heiland, Emerald G.
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Surgical Sciences, Medical epidemiology. Department of Physical Activity and Health, The Swedish School of Sport and Health Sciences (GIH), Stockholm, Sweden.
    Schulze, Jenny
    Department of Laboratory Medicine, Division of Clinical Pharmacology Karolinska Institutet Stockholm Sweden.
    Intra‐individual stability of longitudinal urinary steroid profiles in Swedish athletes2023In: Drug Testing and Analysis, ISSN 1942-7603, E-ISSN 1942-7611, Vol. 15, no 7, p. 769-778Article in journal (Refereed)
    Abstract [en]

    The steroid module of the athlete biological passport (ABP) aims to detect doping with endogenous steroids by longitudinally monitoring epitestosterone (E), testosterone (T), and four metabolically related steroids and their ratios. There are large variations in the urinary levels of the androgen metabolites due to genetic polymorphisms, drug use, menstrual cycle, and other factors. In this study, we aimed to increase our understanding of the natural, within-individual variations of the established ABP markers in males and females over time, looking at samples collected both in and out-of-competition (IC/OOC). Urinary steroid profiles from 323 Swedish athletes, with at least five samples per athlete, were extracted from ADAMS together with information on type of sport, IC/OOC, and time of day. Data were analyzed using coefficient of variation (CV%) to examine within-subject variability and linear mixed effects models to estimate within-subject change in the metabolites over time. The metabolites and ratios expressed higher individual CV% in females (23–56) than in males (18–39). Samples taken OOC showed larger intra-individual variations than samples collected IC for most of the ABP metabolites in both sexes. The median concentrations were higher IC for some metabolites, particularly testosterone being 52% higher among females. Time of day influenced the intra-individual variation of the urinary steroid profile with decreases in androgen metabolites over time, if measured in evening versus daytime. These findings can aid in the testing strategies and interpretation of the steroidal module of ABP.

    Download full text (pdf)
    fulltext
  • 37.
    Enwald, Heidi
    et al.
    University of Oulu.
    Kangas, Maarit
    University of Oulu.
    Keränen, Niina
    University of Oulu.
    Korpelainen, Raija
    University of Oulu and Oulu Deaconess Institute.
    Huvila, Isto
    Uppsala University, Disciplinary Domain of Humanities and Social Sciences, Faculty of Arts, Department of ALM.
    Jämsä, Timo
    University of Oulu.
    Opinions and use of mobile information technology among older people in Northern Finland: Preliminary results of a population based study2016In: Proceedings of the 2016 ASIS&T Annual Meeting, Oct 14-18, Copenhagen / [ed] Andrew Grove and Diane H. Sonnenwald and Lauren Harrison and Catherine Blake and Christian Schlögl and Isabella Peters and Barbara Endler-Jobst and Colleen Cool and Yin-Leng Theng, Silver Springs, MD: ASIS&T , 2016Conference paper (Refereed)
    Abstract [en]

    Older peoples usage of mobile devices is increasing. This study is part of the GASEL project and seeks to increase the understanding of the use of mobile information technology and opinions towards it. Opinions are compared between genders and age groups. The population based data were collected by conducting a questionnaire survey. A random sample of 1,500 adults 65 years of age or older was obtained from the Finnish Population Register Centre. The number of respondents was 918 with a response rate of 61.2 %. About one fifth (n=169) had used a tablet computer and approximately one third (n=226) had used a mobile phone with a touch screen in the past 12 months without encountering major difficulties. The respondents had mostly thought that using the devices would not be easy. They had also thought that the usage would not be too expensive for them. Men and younger old people held more positive opinions towards these new technologies. Older people are slower in adapting and accepting new technologies and this should be taken into account when designing services, applications and content, as these technologies have the potential to enrichen the lives of this specific population group.

    Download full text (pdf)
    fulltext
  • 38.
    Eriksson Crommert, Martin
    et al.
    Univ Orebro, Fac Med & Hlth, SE-70182 Orebro, Sweden.;Swedish Sch Sport & Hlth Sci GIH, Stockholm, Sweden..
    Halvorsen, Kjartan
    Uppsala University, Disciplinary Domain of Science and Technology, Mathematics and Computer Science, Department of Information Technology, Division of Systems and Control. Uppsala University, Disciplinary Domain of Science and Technology, Mathematics and Computer Science, Department of Information Technology, Automatic control. KTH Royal Inst Technol, Sch Technol & Hlth, Stockholm, Sweden..
    Ekblom, Maria M.
    Swedish Sch Sport & Hlth Sci GIH, Stockholm, Sweden.;Karolinska Inst, Dept Neurosci, Stockholm, Sweden..
    Trunk Muscle Activation at the Initiation and Braking of Bilateral Shoulder Flexion Movements of Different Amplitudes2015In: PLOS ONE, E-ISSN 1932-6203, Vol. 10, no 11, article id e0141777Article in journal (Refereed)
    Abstract [en]

    The aim of this study was to investigate if trunk muscle activation patterns during rapid bilateral shoulder flexions are affected by movement amplitude. Eleven healthy males performed shoulder flexion movements starting from a position with arms along sides (0 degrees) to either 45 degrees, 90 degrees or 180 degrees. EMG was measured bilaterally from transversus abdominis (TrA), obliquus internus (OI) with intra-muscular electrodes, and from rectus abdominis (RA), erector spinae (ES) and deltoideus with surface electrodes. 3D kinematics was recorded and inverse dynamics was used to calculate the reactive linear forces and torque about the shoulders and the linear and angular impulses. The sequencing of trunk muscle onsets at the initiation of arm movements was the same across movement amplitudes with ES as the first muscle activated, followed by TrA, RA and OI. All arm movements induced a flexion angular impulse about the shoulders during acceleration that was reversed during deceleration. Increased movement amplitude led to shortened onset latencies of the abdominal muscles and increased level of activation in TrA and ES. The activation magnitude of TrA was similar in acceleration and deceleration where the other muscles were specific to acceleration or deceleration. The findings show that arm movements need to be standardized when used as a method to evaluate trunk muscle activation patterns and that inclusion of the deceleration of the arms in the analysis allow the study of the relationship between trunk muscle activation and direction of perturbing torque during one and the same arm movement.

    Download full text (pdf)
    fulltext
  • 39.
    Essner, Ann
    et al.
    IVC Evidens Djurkliniken Gefle, Norra Gatan 1, SE-80321 Gävle, Sweden..
    Kjellerstedt, Catarina
    Vet Catarina Kjellerstedt AB, Ostgotavagen 5, SE-18635 Vallentuna, Sweden..
    Hesbach, Amie L.
    EmpowerPhysio, Maynard, MA 01754 USA..
    Igelström, Helena
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Women's and Children's Health.
    Injuries and Associated Factors in Swedish Sporting and Utility Trial Dogs-A Cross-Sectional Study2024In: Animals, E-ISSN 2076-2615, Vol. 14, no 3, article id 398Article in journal (Refereed)
    Abstract [en]

    Simple Summary Canine sporting competitions, e.g., agility, obedience, rally obedience, and utility trials, e.g., protection, tracking, search, and messenger, are physically and mentally demanding disciplines. There is a growing concern within the dog sports community that some disciplines and breeds may be at higher injury risk. This study aimed to describe the frequencies and types of injuries experienced amongst Swedish sporting and utility trial dogs and to explore associations between discipline, breed, sex, neuter status, age, and injury history. Through a questionnaire survey, information about 1582 dogs was collected. During their lifetime, more than half of the dogs (n = 928, 58.7%) had suffered from an injury whether it appeared during training, competition, or outside of sport. Key findings were that muscular, joint, and dermatologic injuries were most commonly reported and the most common injury locations were the thoracic, lumbar and lumbosacral spine, paw, head, shoulder, and stifle. In a multivariate analysis, Border Collies, Belgian Malinois, and higher age at the time of report increased the odds of injury history. Our results provide more understanding of injuries in sporting and utility dogs and contribute to injury prevention strategies that potentially enhance canine welfare.Abstract Canine sporting competitions, e.g., agility, obedience, rally obedience, and utility trials, e.g., protection, tracking, search, and messenger, are physically and mentally demanding disciplines. This study aimed to describe the types and frequencies of injuries experienced amongst Swedish sporting and utility trial dogs and to explore associations between discipline, breed, sex, neuter status, age, and injury history. Dog handlers provided information on competition-level dogs (n = 1582) through a cross-sectional survey. The overall proportion of dogs sustaining any injury during their lifetime, whether it was during competition, training, or outside of sport, was 58.7% (n = 928). Muscular, joint, and dermatologic injuries were most commonly reported and the most common injury locations were the thoracic, lumbar and lumbosacral spine, paw, head, shoulder, and stifle. According to multivariate analysis, Border Collie (adjusted OR 1.93), Belgian Malinois (adjusted OR 2.51) and higher age at the time of report (adjusted OR 1.81-9.67) increased the odds of injury history. Our results provide more understanding of injuries in sporting and utility dogs and contribute to injury prevention strategies that potentially enhance canine welfare.

    Download full text (pdf)
    FULLTEXT01
  • 40.
    Fagher, Kristina
    et al.
    Lund Univ, Dept Hlth Sci, Rehabil Med Res Grp, Lund, Sweden.
    Dahlstroem, Orjan
    Linkoping Univ, Dept Med & Hlth Sci, Athlet Res Ctr, Linkoping, Sweden;Linkoping Univ, Dept Behav Sci & Learning, Linkoping, Sweden.
    Jacobsson, Jenny
    Linkoping Univ, Dept Med & Hlth Sci, Athlet Res Ctr, Linkoping, Sweden.
    Timpka, Toomas
    Linkoping Univ, Dept Med & Hlth Sci, Athlet Res Ctr, Linkoping, Sweden.
    Lexell, Jan
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Neuroscience, Lexell: Rehabilitation Medicine. Lund Univ, Dept Hlth Sci, Rehabil Med Res Grp, Lund, Sweden.
    Prevalence of Sports-Related Injuries and Illnesses in Paralympic Athletes2020In: PM&R, ISSN 1934-1482, E-ISSN 1934-1563, Vol. 12, no 3, p. 271-280Article in journal (Refereed)
    Abstract [en]

    BackgroundWith increased participation in Paralympic sports, the burden of sports-related injuries and illnesses may increase. However, there is limited knowledge about the epidemiology of sports-related injuries and illnesses in Paralympic sports (SRIIPS). ObjectiveTo describe among Swedish Paralympic athletes the 1-year retrospective period prevalence of severe SRIIPS and the point prevalence of all SRIIPS and to examine differences in prevalence proportions between athletes with different impairments, behaviors, and sport characteristics. DesignCross-sectional study. SettingSwedish Paralympic Programme. ParticipantsOne hundred and four Paralympic athletes with visual, physical, and intellectual impairment. MethodsAn eHealth application adapted to Paralympic athletes was used to collect self-report data on existing and previous SRIIPS, as well as impairment, behavior, and sport characteristics. Main Outcome MeasurementsOne-year retrospective period prevalence and point prevalence. ResultsThe period prevalence of severe injuries was 31% (95% CI 23-40) and the point prevalence 32% (95% CI 24-41). The period prevalence of severe illnesses was 14% (95% CI 9-23), and 13% of the athletes (95% CI 8-22) reported a current illness. More severe injuries (P<.05) were reported by athletes aged 18 to 25years, not using assistive device, having pain during sport, using analgesics, continuing training injured, and feeling guilt when missing exercise. Athletes who reported a previous severe injury, having pain in daily life and during sport, using analgesics, and being upset when unable to exercise had a higher prevalence of current injuries (P<.05). Being female, reporting previous severe illness, using prescribed medication, and feeling anxious/depressed were features associated with ongoing illnesses (P<.05). ConclusionParalympic athletes report a high prevalence of SRIIPS. Behavioral and psychological aspects as well as pain and use of medication appear to be associated with the occurrence of SRIIPS. The results imply that factors leading to SRIIPS are complex and call for a broad biopsychosocial approach when developing preventive measures. Level of EvidenceIII.

  • 41.
    Fernström, Maria
    et al.
    Department of Physical Activity and Health The Swedish School of Sport and Health Sciences (GIH) Stockholm Sweden.
    Heiland, Emerald G.
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Surgical Sciences, Medical epidemiology. The Swedish School of Sport and Health Sciences (GIH), Stockholm, Sweden.
    Kjellenberg, Karin
    Department of Physical Activity and Health The Swedish School of Sport and Health Sciences (GIH) Stockholm Sweden.
    Ponten, Marjan
    Department of Physiology, Nutrition, and Biomechanics The Swedish School of Sport and Health Sciences (GIH) Stockholm Sweden.
    Tarassova, Olga
    Department of Physiology, Nutrition, and Biomechanics The Swedish School of Sport and Health Sciences (GIH) Stockholm Sweden.
    Nyberg, Gisela
    Department of Physical Activity and Health The Swedish School of Sport and Health Sciences (GIH) Stockholm Sweden;Department of Global Public Health Karolinska Institutet Stockholm Sweden.
    Helgadottir, Björg
    Department of Physical Activity and Health The Swedish School of Sport and Health Sciences (GIH) Stockholm Sweden;Division of Insurance Medicine, Department of Clinical Neuroscience Karolinska Institutet Stockholm Sweden.
    Ekblom, Maria M.
    Department of Physical Activity and Health The Swedish School of Sport and Health Sciences (GIH) Stockholm Sweden;Department of Neuroscience Karolinska Institutet Stockholm Sweden.
    Ekblom, Örjan
    Department of Physical Activity and Health The Swedish School of Sport and Health Sciences (GIH) Stockholm Sweden.
    Effects of prolonged sitting and physical activity breaks on measures of arterial stiffness and cortisol in adolescents2023In: Acta Paediatrica, ISSN 0803-5253, E-ISSN 1651-2227, Vol. 112, no 5, p. 1011-1018Article in journal (Refereed)
    Abstract [en]

    Aim

    In adults, prolonged periods of sitting have been linked to acute negative effects on vascular structure and function. The aim of this study was to evaluate the acute effects of physical activity (PA) breaks during prolonged sitting on arterial stiffness, cortisol and psychological factors in adolescents.

    Methods

    Adolescents underwent different short (3-min) breaks starting every 20 min, during 80 min of sitting on three separate days. Breaks were (A) social seated breaks (SOC), (B) low-intensity simple resistance activity PA breaks (SRA) and (C) moderate-intensity step-up PA breaks (STEP). The arterial stiffness measures were augmentation index (AIx), AIx@75 and pulse wave velocity (PWV). Cortisol was measured from saliva. Psychological factors were self-reported.

    Results

    Eleven girls and six boys (average age 13.6 ± 0.7 years) participated, with average baseline heart rates of 72 ± 11 bpm, systolic/diastolic blood pressure 111 ± 7/64 ± 6 mmHg and cortisol 10.9 ± 5.8 nmoL/L. PWV, cortisol and psychological factors did not change after any of the conditions. AIx@75 increased significantly (4.9 ± 8.7–9.2 ± 13.2) after the STEP intervention compared with SOC and SRA (time × condition p < 0.05).

    Conclusion

    Arterial stiffness increased after prolonged sitting with frequent, short step-up activity breaks. The results indicate potential important intensity-dependent effects of physical activity on vascular regulation in youth.

    Download full text (pdf)
    fulltext
  • 42.
    Fritz, Benjamin
    et al.
    Balgrist Univ Hosp, Dept Radiol, Zurich, Switzerland.;Univ Zurich, Fac Med, Zurich, Switzerland..
    Parkar, Anagha P.
    Haraldsplass Deaconess Hosp, Dept Radiol, Bergen, Norway..
    Cerezal, Luis
    Diagnost Med Cantabria, Dept Radiol, Santander, Spain..
    Storgaard, Morten
    Inst Sports Med Copenhagen, Copenhagen Area, Copenhagen, Denmark..
    Boesen, Mikael
    Copenhagen Univ Hosp Bispebjerg & Frederiksberg, Dept Radiol, Copenhagen NV, Denmark.;Copenhagen Univ Hosp Bispebjerg & Frederiksberg, Parker Inst, Frederiksberg, Denmark..
    Åström, Gunnar
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Surgical Sciences, Radiology. Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Immunology, Genetics and Pathology.
    Fritz, Jan
    NYU, Dept Radiol, Grossman Sch Med, New York, NY USA.;Univ Bergen, Fac Med & Dent, Dept Clin Med, Bergen, Norway..
    Sports Imaging of Team Handball Injuries2020In: Seminars in Musculoskeletal Radiology, ISSN 1089-7860, E-ISSN 1098-898X, Vol. 24, no 03, p. 227-245Article in journal (Refereed)
    Abstract [en]

    Team handball is a fast high-scoring indoor contact sport with>20 million registered players who are organized in>150 federations worldwide. The combination of complex and unique biomechanics of handball throwing, permitted body tackles and blocks, and illegal fouls contribute to team handball ranging among the four athletic sports that carry the highest risks of injury. The categories include a broad range of acute and overuse injuries that most commonly occur in the shoulder, knee, and ankle. In concert with sports medicine, physicians, surgeons, physical therapists, and radiologists consult in the care of handball players through the appropriate use and expert interpretations of radiography, ultrasonography, CT, and MRI studies to facilitate diagnosis, characterization, and healing of a broad spectrum of acute, complex, concomitant, chronic, and overuse injuries. This article is based on published data and the author team's cumulative experience in playing and caring for handball players in Denmark, Sweden, Norway, Germany, Switzerland, and Spain. The article reviews and illustrates the spectrum of common handball injuries and highlights the contributions of sports imaging for diagnosis and management.

  • 43.
    Giannotta, F.
    et al.
    Mälardalen Univ, Sch Hlth Care & Social Welf, Div Publ Hlth, Västerås, Sweden.;Stockholm Univ, Dept Publ Hlth, Stockholm, Sweden.;Dept Publ Hlth Sci, Albanovagen 12, S-11419 Stockholm, Sweden..
    Nilsson, K. W.
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Neuroscience. Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Disciplinary Domain of Medicine and Pharmacy, research centers etc., Centre for Clinical Research, County of Västmanland. Mälardalen Univ, Sch Hlth Care & Social Welf, Div Publ Hlth, Västerås, Sweden..
    Åslund, Cecilia
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Disciplinary Domain of Medicine and Pharmacy, research centers etc., Centre for Clinical Research, County of Västmanland. Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Public Health and Caring Sciences, Social medicine/CHAP.
    Larm, P.
    Stockholm Univ, Dept Publ Hlth, Stockholm, Sweden..
    Frequency of vigorous physical activity and depressive symptoms across adolescence: Disentangling the reciprocal associations between different groups and subtypes of symptoms2023In: Mental Health and Physical Activity, ISSN 1755-2966, E-ISSN 1878-0199, Vol. 25, article id 100536Article in journal (Refereed)
    Abstract [en]

    Physical activity has a demonstrated positive effect on youth depressive symptoms. However, very few studies have explored the bi-directionality of the links between physical activity and depression. The present study aims at filling this gap and tests whether any associations are moderated by sex. Moreover, the role of subtype of depressive symptoms, vegetative (i.e., lack of energy, poor sleep) or non-vegetative (i.e., mood-related), is explored. Participants were 910 12-13 year-old Swedish adolescents (56% girls) who answered a three-wave survey at ages 12-13 (T1), 15-16 (T2), and 18-19 (T3). Using a cross-lagged structural model, depression predicted decreased frequency of vigorous physical activity (VPA) from T1 to T2 (& beta; = -0.09, p < .05) and from T2 to T3 (& beta; = -0.10, p < .01), while frequency of VPA at T2 decreased depression at T3 (& beta; = -0.12, p < .05). Associations did not differ between boys and girls. Non-vegetative symptoms predicted decreased frequency of VPA from T1 to T2 (& beta; = -0.10, p < .05), while frequency of VPA at T2 predicted decreased non-vegetative symptoms at T3 (& beta; = -0.15, p < .05). Vegetative symptoms predicted decreased frequency of VPA from T1 to T2 (& beta; = -0.09, p < .05), while have a reciprocal influence with VPA from T2 to T3. Overall, our results highlight an association across adolescence between VPA and depression. The association becomes stronger and reciprocal in middle adolescence, which suggests this period as an effective developmental time to plan physical-activity-based interventions to decrease youth depressive symptoms.

    Download full text (pdf)
    fulltext
  • 44.
    Gilenstam, Kajsa
    et al.
    Umeå universitet, Idrottsmedicin.
    Hammarström, Anne
    Umeå universitet, Institutionen för folkhälsa och klinisk medicin.
    Henriksson-Larsén, Karin
    Umeå universitet, Idrottsmedicin.
    Gendered expectations and structural conditions in ice hockeyIn: Research Quarterly for Exercise and Sport, ISSN 0270-1367, E-ISSN 2168-3824Article in journal (Refereed)
    Abstract [en]

    Using player questionnaires (72 women, 42 men) and club staff interviews, this paper provides an analysis of the effect of structural conditions on expectations of support and hindrance. In spite of large structural conditions women and men rated similar levels of support and hindrance. Yet, both women and men believed that the situation in sport was better for men. The adult women’s lower expectations may be an indication of their awareness of their lower status within their sport. When comparisons are made between women and men in sport it is important to consider that gender operates at different levels and may affect conditions as well as expectations

  • 45.
    Goosey-Tolfrey, Victoria L.
    et al.
    Loughborough Univ Technol, Sch Sport Exercise & Hlth Sci, Peter Harrison Ctr Disabil Sport, Loughborough, Leics, England;Loughborough Univ Technol, Sch Sport Exercise & Hlth Sci, Natl Ctr Sport & Exercise Med, Loughborough, Leics, England.
    van der Scheer, Jan W.
    Loughborough Univ Technol, Sch Sport Exercise & Hlth Sci, Peter Harrison Ctr Disabil Sport, Loughborough, Leics, England;Loughborough Univ Technol, Sch Sport Exercise & Hlth Sci, Natl Ctr Sport & Exercise Med, Loughborough, Leics, England.
    Lexell, Jan
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Neuroscience, Rehabilitation Medicine.
    Clements, Kristen
    Loughborough Univ Technol, Sch Sport Exercise & Hlth Sci, Natl Ctr Sport & Exercise Med, Loughborough, Leics, England.
    Ginis, Kathleen A. Martin
    Univ British Columbia, ICORD, Sch Hlth & Exercise Sci, Dept Med,Fac Med, Kelowna, BC, Canada.
    Development of scientific exercise guidelines for adults with spinal cord injury2018In: British Journal of Sports Medicine, ISSN 0306-3674, E-ISSN 1473-0480, Vol. 52, no 18, p. 1166-1167Article in journal (Other academic)
    Download full text (pdf)
    fulltext
  • 46.
    Granlund, Mats
    et al.
    School of Health Sciences, Jönköping University.
    Arvidsson, Patrik
    Niia, Anna
    Björck-Åkesson, Eva
    School of Education and Communication, Jönköping University.
    Simeonsson, Rune
    Maxwell, Gregory
    School of Education and Communication, Jönköping University.
    Adolfsson, Margareta
    School of Education and Communication, Jönköping University.
    Eriksson-Augustine, Lilly
    Pless, Mia
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Public Health and Caring Sciences, Research in Disability and Habilitation.
    Differentiating activity and participation of children and youth with disability in Sweden: a third qualifier in the International Classification of Functioning, Disability, and Health for Children and Youth?2012In: American Journal of Physical Medicine & Rehabilitation, ISSN 0894-9115, E-ISSN 1537-7385, Vol. 91, no 13:S1, p. S84-S96Article in journal (Refereed)
    Abstract [en]

    OBJECTIVE:

    This article discusses the use of a third qualifier, subjective experience of involvement, as a supplement to the qualifiers of capacity and performance, to anchor activity and participation as separate endpoints on a continuum of actions.

    DESIGN:

    Empirical data from correlational studies were used for secondary analyses. The analyses were focused on the conceptual roots of the participation construct as indicated by the focus of policy documents, the support for a third qualifier as indicated by correlational data, differences between self-ratings and ratings by others in measuring subjective experience of involvement, and the empirical support for a split between activity and participation in different domains of the activity and participation component.

    RESULTS:

    Participation seems to have two conceptual roots, one sociologic and one psychologic. The correlational pattern between the qualifiers of capacity, performance, and subjective experience of involvement indicates a possible split between activity and participation. Self-ratings of participation provide information not obtained through ratings by others, and later domains in the activities and participation component fit better with measures of experienced involvement than earlier domains did.

    CONCLUSIONS:

    The results from secondary analyses provide preliminary support for the use of a third qualifier measuring subjective experience of involvement to facilitate the split between activity and participation in the International Classification of Functioning, Disability and Health, Children and Youth version, activity and participation domain.

  • 47. Guidetti, Susanne
    et al.
    Ytterberg, Charlotte
    Ekstam, Lisa
    Johansson, Ulla
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Medicinska och farmaceutiska vetenskapsområdet, centrumbildningar mm, Centre for Research and Development, Gävleborg.
    Eriksson, Gunilla
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Public Health and Caring Sciences, Research in Disability and Habilitation.
    Changes in the impact of stroke between 3 and 12 months post-stroke, assessed with the Stroke Impact Scale2014In: Journal of Rehabilitation Medicine, ISSN 1650-1977, E-ISSN 1651-2081, Vol. 46, no 10, p. 963-968Article in journal (Refereed)
    Abstract [en]

    Objective: To examine data collected using the Stroke Impact Scale 3.0 (SIS) at 3 and 12 months post-stroke, and to explore any clinically meaningful changes in everyday life in relation to age, gender and stroke severity. Design: Prospective longitudinal study. Methods: A total of 204 persons were assessed using the SIS at 3 and 12 months after onset of stroke. Changes in domain scores were calculated over time and in relation to age, gender and stroke severity. Results: The Strength, Hand Function and Participation domains had the highest perceived impact at 3 and 12 months, indicating problems in everyday life. Stroke recovery was perceived to be significantly higher at 12 than at 3 months irrespective of stroke severity, age or gender. The impact on the Strength and Emotion domains was significantly lower at 12 months than at 3 months. Most clinically meaningful changes, both positive and negative ( 15 points), were seen in the Participation domain and in Stroke recovery. Few changes were associated with age, gender or stroke severity. Conclusion: Both positive and negative clinically meaningful changes related to impact of stroke were found between 3 and 12 months post-stroke. Therefore it is important to pay close attention to patients' perceptions of their everyday life situation during rehabilitation and at discharge.

  • 48.
    Halvorsen, Kjartan
    et al.
    Uppsala University, Disciplinary Domain of Science and Technology, Mathematics and Computer Science, Department of Information Technology, Division of Systems and Control. Uppsala University, Disciplinary Domain of Science and Technology, Mathematics and Computer Science, Department of Information Technology, Automatic control.
    Eriksson, Martin
    Gullstrand, Lennart
    Acute Effects of Reducing Vertical Displacement and Step Frequency on Running Economy2012In: Journal of Strength and Conditioning Research, ISSN 1064-8011, E-ISSN 1533-4287, Vol. 26, no 8, p. 2065-2070Article in journal (Refereed)
    Abstract [en]

    This work studies the immediate effects of altering the vertical displacement of the center of mass (VD) and step frequency (SF) on the metabolic cost of level treadmill running at 16 km.h(-1) on 16 male runners. Alterations of VD, SF, and the product VD x SF was induced using a novel feedback system, which presents target and current values to the runner by visual or auditory display. Target values were set to 5 and 10% reductions from individual baseline values. The results were expressed as relative changes from baseline values. Alterations led to an increase in metabolic cost in most cases, measured as (V) over dotO(2) uptake per minute and kilogram of body mass. Correlations were weak. Still, linear multiple regression revealed a positive coefficient (0.28) for the relationship between VD x SF and (V) over dotO(2). Separate rank correlation tests showed negative correlation (tau = -0.19) between SF and (V) over dotO(2) and positive correlation (tau = 0.16) between VD and (V) over dotO(2). There is a coupling between VD and SF caused by the mechanics of running; hence, isolated reduction of either factor was hard to achieve. The linear model also showed a negative coefficient for the relationship between the height of the center of mass above the ground (CoMh) and (V) over dotO(2). The effect size was small (multiple R-2 0.07 and 0.12). Still the results indicate that reducing VD x SF by reducing the vertical displacement can have a positive effect on running economy, but a concurrent reduction in CoMh may diminish the positive effect. Midterm and long-term effects of altering the technique should also be studied.

  • 49.
    Halvorsen, Kjartan
    et al.
    Uppsala University, Disciplinary Domain of Science and Technology, Mathematics and Computer Science, Department of Information Technology, Division of Systems and Control. Uppsala University, Disciplinary Domain of Science and Technology, Mathematics and Computer Science, Department of Information Technology, Automatic control.
    Tinmark, Fredrik
    Arndt, Anton
    The concept of mobility in single- and double handed manipulation2014In: Journal of Biomechanics, ISSN 0021-9290, E-ISSN 1873-2380, Vol. 47, no 14, p. 3569-3573Article in journal (Refereed)
    Abstract [en]

    The concept of mobility describes an important property of the human body when performing manipulation tasks. It describes, in a sense, how easy it is to accelerate a link or a point on the manipulator. Most often it is calculated for the end-link or end-point of the manipulator, since these are important for the control objective of the manipulator. Mobility is the inverse of the inertia experienced by a force acting on the end-point, or a combined force and torque acting on the end-link. The concept has been used in studies of reaching tasks with one arm, but thus far not for bi-manual manipulation. We present here the concept for both single-handed and double-handed manipulation, in a general manner which includes any type of grip of the hands on the object. The use of the concept is illustrated with data on the left and right arm in a golf swing.

  • 50.
    Hedenberg, Jennifer
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Pharmacy, Department of Pharmaceutical Biosciences.
    Hur rHuEPO kan påverka uthållighetsprestandaHur rHuEPO kan påverka uthållighetsprestanda2020Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [sv]

    Erytropoietin (EPO) är ett endogent glykoproteinhormon som stimulerar produktionen av erytrocyter. Erytrocyternas huvuduppgift är att transportera syre till vävnader och på detta sätt främja aerob metabolism vilket genererar energi till musklerna. På 80-talet framställdes för första gången rekombinant humant EPO (rHuEPO) vilket på senare år använts illegalt som dopingmedel. Denna typ av doping klassas följaktligen som bloddoping och 1990 förbjöds rHuEPO av World Anti-Doping Agency (WADA). Många fall av rHuEPO doping har emellertid uppdagats under åren där syftet med användningen hos atleterna har varit att bland annat öka sin uthållighetskapacitet och således prestationsförmåga. Syftet med detta fördjupningsprojekt var att undersöka vilka samt hur kraftfulla effekter rHuEPO har på parametrar som förbättrar prestation. Metoden som tillämpades för projektet var en systematisk litteraturöversikt där vetenskapliga originalstudier, relevanta för syftet, granskades och sammanställdes. Resultatet visade på att rHuEPO ökar VO2max vilket är en indikation på en atlets kardiorespiratoriska kondition. Även hematologiska parametrar som total hemoglobinmassa (tHb), hemoglobinkoncentration (HGB) samt hematokrit (HTC) ökade vilka alla tre är involverade i syretransporten i cirkulationssystemet. Resultatet visar således på att en kur av rHuEPO har positiva effekter parametrar som är viktiga för en atlets prestation. Om den effekt som resultatet visade på prestation appliceras på verkligheten skulle det innebära att en längdskidåkare i Vasaloppet 2020 skulle komma på första plats istället för 73:a.

    Download full text (pdf)
    Hur rHuEPO kan påverka uthållighetsprestanda
123 1 - 50 of 106
CiteExportLink to result list
Permanent link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf