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Interval training compared with continuous training in patients with COPD
Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Sciences, Respiratory Medicine and Allergology. (Lungmedicin och Allergologi)
Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Sciences, Respiratory Medicine and Allergology. (Lungmedicin och Allergologi)
Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Sciences, Clinical Physiology.
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2007 (English)In: Respiratory Medicine, ISSN 0954-6111, E-ISSN 1532-3064, Vol. 101, no 6, 1196-1204 p.Article in journal (Refereed) Published
Abstract [en]

The aim of this study was to compare the effects of interval training (3-min intervals) with continuous training on peak exercise capacity (W peak), physiological response, functional capacity, dyspnoea, mental health and health-related quality of life (HRQoL) in patients with moderate or severe COPD.

Sixty patients exercised twice weekly for 16 weeks after randomisation to interval- or continuous training. Target intensity was 80% of baseline W peak in the interval group (I-group) and 65% in the continuous group (C-group). Patients were tested by spirometry, ergometer cycle test, cardiopulmonary test and a 12 min walk test. Dyspnoea was measured by the dyspnoea scale from Chronic Obstructive Disease Questionnaire (CRDQ), mental health by Hospital Anxiety and Depression scale (HAD) and HRQoL by the Medical Outcomes Survey Short Form 36 (SF-36).

After training, W peak, peak oxygen uptake (VO2 peak) and exhaled carbon dioxide (VCO2 peak) increased significantly in both groups, no significant differences between the groups. Minute ventilation (VE peak) increased only in the C-group. At identical work rates (isotime) VO2, VCO2 and VE were significantly more decreased in the I-group than in the C-group (p<0.05). Functional capacity, dyspnoea, mental health, and HRQoL improved significantly in both groups, no difference between the groups.

Interval training and continuous training were equally potent in improving peak exercise capacity, functional exercise capacity, dyspnoea, mental health and HRQoL in patients with moderate or severe COPD. At isotime, the physiological response to training differed between the groups, in favour of the interval training.

Place, publisher, year, edition, pages
2007. Vol. 101, no 6, 1196-1204 p.
Keyword [en]
Chronic obstructive pulmonary disease, Continuous training, Endurance training, Health-related quality of life, Interval training, Rehabilitation
National Category
Medical and Health Sciences
Identifiers
URN: urn:nbn:se:uu:diva-95529DOI: 10.1016/j.rmed.2006.11.004ISI: 000247313000020PubMedID: 17188853OAI: oai:DiVA.org:uu-95529DiVA: diva2:169783
Available from: 2007-03-08 Created: 2007-03-08 Last updated: 2017-12-14Bibliographically approved
In thesis
1. Physical Training and Testing in Patients with Chronic Obstructive Pulmonary Disease (COPD)
Open this publication in new window or tab >>Physical Training and Testing in Patients with Chronic Obstructive Pulmonary Disease (COPD)
2007 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

The overall aims of the studies were to investigate the effects of different training modalities on exercise capacity and health-related quality of life (HRQoL) in patients with moderate or severe COPD and, further, to explore two of the physical tests used in pulmonary rehabilitation.

In study I, the 12-minute walking distance (12MWD) did not increase on retesting in patients with exercise-induced hypoxemia (EIH) whereas 12MWD increased significantly on retesting in the non-EIH patients. In study II, we found that the incremental shuttle walking test was as good a predictor of peak exercise capacity (W peak) as peak oxygen uptake (VO2 peak) is. In study III, we investigated the effects of two different combination training programmes when training twice a week for eight weeks. One programme was mainly based on endurance training (group A) and the other on resistance training and callisthenics (group B). W peak and 12MWD increased in group A but not in group B. HRQoL, anxiety and depression were unchanged in both groups. Ratings of perceived exertion at rest were significantly lower in group A than in group B after training and during 12 months of follow-up. Twelve months post-training, 12MWD was back to baseline in group A, but significantly shorter than at baseline in group B. Thus, a short endurance training intervention delayed decline in 12MWD for at least one year. Patients with moderate and severe COPD responded to training in the same way. In study IV, both interval and continuous endurance training increased W peak, VO2 peak, peak exhaled carbon dioxide (VCO2 peak) and 12MWD. Likewise, HRQoL, dyspnoea during activities of daily life, anxiety and depression improved similarly in both groups. At a fixed, submaximal workload (isotime), the interval training reduced oxygen cost and ventilatory demand significantly more than the continuous training did.

Place, publisher, year, edition, pages
Uppsala: Acta Universitatis Upsaliensis, 2007. 86 p.
Series
Digital Comprehensive Summaries of Uppsala Dissertations from the Faculty of Medicine, ISSN 1651-6206 ; 234
Keyword
Physical therapy, chronic obstructive pulmonary disease, pulmonary rehabilitation, physical training, endurance training, interval training, health-related quality of life, exercise testing, walking tests, physiotherapy, Sjukgymnastik
Identifiers
urn:nbn:se:uu:diva-7632 (URN)978-91-554-6815-6 (ISBN)
Public defence
2007-03-31, Grönwallsalen, Akademiska sjukhuset, ingång 70, Uppsala, 09:15
Opponent
Supervisors
Available from: 2007-03-08 Created: 2007-03-08 Last updated: 2013-05-23Bibliographically approved

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Boman, GunnarHedenström, Hans

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