Association of physical activity with body-composition indexes in children aged 6-8 y at varied risk of obesity.
- Rennie, Kirsten L
- Livingstone, M Barbara E
- Wells, Jonathan CK
- McGloin, A
- Coward, W Andrew
- Prentice, Andrew M
- Jebb, Susan A
DOIAbstract
BACKGROUND: Physical inactivity increases the risk of obesity, but the relations between reported levels of physical activity (PA) and measures of body fatness (BF) in children are remarkably inconsistent. OBJECTIVE: We examined the relation between objective measures of PA and body-composition indexes in nonobese children. DESIGN: A cross-sectional study was conducted in 100 children aged 6-8 y who were recruited according to their risk of future obesity: high-risk children had >/=1 obese parent [body mass index (BMI; in kg/m(2)): >30] and low-risk children had 2 nonobese biological parents (BMI: <30). Free-living activity energy expenditure (AEE) and PA level were calculated from 7-d doubly labeled water measurements, time spent in light-...
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