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Skillnader i fysisk aktivitet  mellan obesa och normalviktiga barn: En jämförelse gjord med accelerometer mellan barn som lider av  obesitas och en normalviktig kontrollgrupp
Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Public Health and Caring Sciences.
2013 (Swedish)Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
Abstract [sv]

Syfte: Syftet med denna studie var att jämföra barn som lider av fetma och normalviktiga barns fysiska aktivitet mätt med cpm, AEE och TEE samt att undersöka om det fanns en skillnad mellan normalviktiga och obesa barn angående hur nära barnens totala energiförbrukning låg i förhållande till NNR:s rekommenderade energiintag. Syftet var även att undersöka hur mycket tid som barnen spenderade i stillasittande, låg samt moderat till högintensiv fysisk aktivitet samt att undersöka om det fanns några skillnader mellan flickor och pojkar avseende fysisk aktivitet. 

Metod: 25 normalviktiga barn och 25 obesa barn i åldrarna sju till 17 år fick bära ActicalTM accelerometer i två till fyra dagar runt sin fotled. Från barnens journaler hämtades data och utifrån denna beräknades barnens fysiska och totala energiförbrukning per kilo kroppsvikt. Accelerometerns rådata (counts) insamlades och med hjälp av ett dataprogram beräknades counts per minut. För att beräkna tid i stillasittande, lågintensiv samt moderat till högintensiv fysisk aktivitet användes cut off points framtagna av Heil (2006). 

Resultat: Det fanns en skillnad mellan grupperna avseende både total energiförbrukning (Z= -3,444, p= ,001) och aktivitetsrelaterad energiförbrukning, men skillnaden i aktivitetsrelaterad energiförbrukning var inte statistiskt signifikant (t= 1,796 p=,079). Båda grupperna hade en lägre TEE än NNR:s rekommenderade energiintag och skillnaden mellan grupperna var statistiskt signifikant (Z=-4,298 p=,000). Det fanns ingen skillnad mellan grupperna avseende stillasittande (Z= -1,204 p=,229) och lågintensiv aktivitet (Z=-,117 p=,907) men de normalviktiga barnen spenderade mer tid i moderat till högintensiv fysisk aktivitet (Z=-2,719 p=,007). Ingen skillnad avseende fysisk aktivitet sågs mellan könen. 

Slutsats: Normalviktiga barn är mer fysiskt aktiva och ägnar mer tid åt fysisk aktivitet med högre intensitet än barn som lider av fetma. Detta bidrar troligen till att normalviktiga barn har en högre energiförbrukning per kilo kroppsvikt än obesa barn och kan vara en del i förklaringen till uppkomsten av barnfetma. 

Abstract [en]

Objective: The purpose of this study was to compare physical activity between obese children and children with normal weight status regarding cpm, AEE and TEE. The aim was also to investigate how close the children's total energy expenditure were relative to Nordic nutrition recommendations (NNR) recommended energy intake and to examine how much time the children spent in sedentary, low and moderate to vigorous physical activity. Another objective was to study differences regarding physical activity between girls and boys. 

Design: 25 children with normal weight status and 25 children suffering from obesity in the ages of seven to 17 years wore the ActicalTM accelerometer for two to four days around their ankle. Data was retrieved from the children’s medical records to calculate the physical and total energy expenditure. Raw data (counts) were collected from the accelerometer and counts per minute were calculated using a computer program. Cut off points developed by Heil (2006) were used to calculate time spent in sedentary, low-intensity and moderate to vigorous physical activity. 

Results: There was a difference between groups in both total energy expenditure (Z = -3.444, p = .001) and activity-related energy expenditure, but the difference in activity related energy expenditure was not statistically significant (t = 1.796 p =, 079). Both groups had lower TEE per kg bodyweight than NNR's recommended energy intake and the difference between groups was statistically significant (Z = -4.298 p =, 000). There was no difference between groups regarding time spent in sedentary (Z = -1.204 p =, 229) and low-intensity activity (Z = -, 117 p =, 907) but the children with normal weight status spent more time in moderate to vigorous physical activity (Z = -2.719 p =, 007). There were no differences regarding physical activity between the sexes. 

Conclusion: Children with normal weight status are more physically active and spend more time in physical activity with higher intensity than children who suffer from obesity. This likely contributes to children with normal weight status having higher energy expenditure per kilogram of body weight than obese children and may partly explain the development of childhood obesity.

Place, publisher, year, edition, pages
2013. , 36 p.
Keyword [en]
Obesity, physical activity, accelerometer, children, adolescents
Keyword [sv]
Fetma, fysisk aktivitet, accelerometer, barn, tonåring
National Category
Public Health, Global Health, Social Medicine and Epidemiology
URN: urn:nbn:se:uu:diva-202242OAI: oai:DiVA.org:uu-202242DiVA: diva2:631542
Subject / course
Public Health
Educational program
Master Programme in Public Health
Available from: 2013-06-24 Created: 2013-06-21 Last updated: 2013-06-24Bibliographically approved

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