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Evidence for secular trends in children's physical activity behaviour.
J Dollman1, K Norton, L Norton
1School of Health Sciences, University of South Australia, Adelaide, SA, Australia.
British Journal of Sports Medicine
|November 25, 2005
Summary
Childhood obesity may stem from reduced physical activity, not just increased calorie intake. Declining activity in transport, school, and sports is evident, with external factors limiting youth engagement.
Area of Science:
- Pediatric Health
- Public Health
- Exercise Science
Background:
- Global rise in childhood weight problems necessitates understanding energy balance.
- Methodological challenges hinder analysis of contributing factors.
- Both excessive energy intake and decreased energy expenditure are potential drivers.
Purpose of the Study:
- To review available evidence on physical activity trends in children and adolescents.
- To explore direct and indirect measures of physical activity and sedentariness.
- To identify factors influencing physical activity levels in young people.
Main Methods:
- Systematic review and summation of existing trend data on physical activity.
- Inclusion of direct measures (e.g., active transport, sports participation) and indirect measures (e.g., fitness, attitudes).
- Analysis of evidence across various daily activity contexts.
Main Results:
- Physical activity is declining in key areas like active transport, school physical education, and organized sports in many nations.
- Youth express a desire to be physically active.
- Numerous external constraints impede children's physical activity.
Conclusions:
- Declining physical activity is a significant concern in childhood.
- External factors, including school policies, parental rules, and environmental issues, create barriers to activity.
- Addressing these constraints is crucial for promoting physical activity in children.
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