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Effects on physical activity of a 2-year lifestyle intervention in overweight and obese children
Umeå University, Faculty of Social Sciences, Department of Food and Nutrition.
Umeå University, Faculty of Medicine, Department of Community Medicine and Rehabilitation, Physiotherapy.
Umeå University, Faculty of Social Sciences, Department of Food and Nutrition.
2011 (English)In: Advances in Physiotherapy, ISSN 1403-8196, E-ISSN 1651-1948, Vol. 13, no 3, 97-109 p.Article in journal (Refereed) Published
Abstract [en]

The aim was to examine the effect on physical activity of a 2-year family-based lifestyle intervention among overweight and obese Swedish children 8–12 years of age; 105 children were randomized to either intervention or control group. The intervention group was offered a 2-year lifestyle programme. Physical activity was measured using SenseWear Pro2 Armband during 4 consecutive days before and after the intervention. When comparing the intervention and control groups, no significant differences were found in the physical activity outcome variables after 2 years of intervention. However, the intervention group decreased their number of steps per day by 13%, p = 0.003 but had an unchanged screen time, whereas the control group had an unchanged number of steps but increased their screen time by 15%, p = 0.02, from baseline to 2-year measurement. There were no significant change in the intervention group, whereas significantly fewer children in the control group achieved the physical activity recommendations at 2-year measurement (88%) compared with at baseline (98%), p = 0.007. Future interventions regarding physical activity among overweight and obese children are of great importance even though the present one showed limited effects. In the continuing work, a greater effect may be received with an extended and more intense intervention regarding physical activity, focusing on reducing sedentary time rather than increasing the physical activity level.

Read More: http://informahealthcare.com/doi/abs/10.3109/14038196.2011.562540

Place, publisher, year, edition, pages
2011. Vol. 13, no 3, 97-109 p.
Keyword [en]
BMI, childhood, exercise habits, prevention
National Category
Other Social Sciences not elsewhere specified Physiotherapy
Research subject
Food and Nutrition
Identifiers
URN: urn:nbn:se:umu:diva-37507DOI: 10.3109/14038196.2011.562540OAI: oai:DiVA.org:umu-37507DiVA: diva2:360974
Available from: 2010-11-05 Created: 2010-11-05 Last updated: 2017-12-12Bibliographically approved
In thesis
1. Promoting physical activity among overweight and obese children: Effects of a family-based lifestyle intervention on physical activity and metabolic markers
Open this publication in new window or tab >>Promoting physical activity among overweight and obese children: Effects of a family-based lifestyle intervention on physical activity and metabolic markers
2010 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

Background Overweight and obesity in childhood is associated with physical, psychological and social consequences. Physical inactivity is regarded as one of the main factors that have contributed to the increase in childhood obesity through out the world. Overweight and obesity as well as physical activity level are shown to track from childhood to adolescence and adulthood, thereby influencing not only the current health status but also long-term health. The general purpose of this thesis was to evaluate the effect of a 2-year family-based lifestyle intervention on physical activity and metabolic health among children with overweight and obesity.

Methods Children with overweight or obesity living in northern Sweden were recruited to the study. In total 105 children, mean age 10.5 years (SD±1.09), were randomized into either an intervention or a control group. The intervention group was offered as a 2-year family-based lifestyle intervention; the 1st year consisted of 14 group sessions and during the 2nd year the intervention was web-based. The control group did not participate in any intervention sessions, but performed all measurements. Physical activity was measured in all children using SenseWear Pro2 Armband (SWA) during 4 consecutive days before, in the middle and after the intervention, data regarding anthropometrics and blood values were collected in the same periods. Twenty-two of the children wore SWA during 14 days before the intervention in order to validate energy expenditure (EE) estimated by SWA against EE measured with double labelled water.

Results The SWA, together with software version 5.1, proved to be a valid device to accurately estimate EE at group level of overweight and obese children. There were no statistically significant differences between the groups neither before nor after the intervention regarding physical activity and screen-time. All children significantly decreased their time being active ≥3 METs during the study period. After the study period, significantly fewer in the control group achieved the national physical activity recommendation, and they had significantly increased their screen-time. However, these changes were not seen within the intervention group. The intervention group had a significantly lower apolipoprotein B/A1 compared to the control group at 1-year measurement; no other significant differences were found regarding metabolic markers. No statistical difference was found between the groups regarding body mass index after the 2-year study period.

Conclusion Even though a comprehensive program, the 2-year family-based lifestyle intervention had limited effects on physical activity and metabolic health in overweight and obese children. SWA is a device that can be used in future studies to measure energy expenditure among free-living overweight or obese children.

Place, publisher, year, edition, pages
Umeå: Institutionen för Kostvetenskap, 2010. 64 p.
Keyword
intervention: children: overweight: obestiy: physical activity
National Category
Food Science Physiotherapy
Research subject
Physiotherapy; Food and Nutrition
Identifiers
urn:nbn:se:umu:diva-37511 (URN)978-91-7459-102-6 (ISBN)
Public defence
2010-12-10, Hörsal C, Samhällsvetarhuset, Umeå Universitet, Umeå, 13:00 (Swedish)
Opponent
Supervisors
Projects
SELFH
Available from: 2010-11-19 Created: 2010-11-05 Last updated: 2011-01-26Bibliographically approved

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