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Publication Type
Journal Article
Author, Analytic
Campbell, CP; Barnett, AT; Boyne, Michael S; Soares-Wynter, Suzanne S; Osmond, C; Fraser, RA; Badaloo, Asha V; Taylor Bryan, Carolyn R; Forrester, Terrence E
Author Affiliation, Ana.
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Article Title
Predictors of physical activity and energy expenditure in children of African origin
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Volume ID
64
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Page(s)
1093-1100
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Location/URL
https:; www.nature.com/articles/ejcn2010128.pdf?origin=ppub
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Abstract
Background/Objectives: We hypothesized that maternal size during pregnancy and birth size are determinants of childhood physical activity energy expenditure (PAEE). Also, childhood PAEE is inversely related to adiposity and levels of cardiovascular risk factors.Subjects/Methods: The Vulnerable Windows Cohort Study is a longitudinal observational study of 569 Afro-Jamaican mothers recruited from the first trimester and their offspring. Anthropometry, bioelectrical impedance, PAEE (using the Actical monitor) and cardiovascular risk factors (blood pressure, fasting glucose, insulin and lipids) were measured in 124 boys and 160 girls at a mean age of 13.2 years. Results: Boys had more fat-free mass (FFM) and expended more energy than girls (12.3±3.3 vs 9.6±2.8 kcal/kg/day; Po0.001). Maternal weight was associated with child’s PAEE (r ¼ 0.29; Po0.001). PAEE was not significantly associated with birth weight. Maternal weight, after adjusting for child’s age and sex, was positively associated with the child’s FFM, fat mass and %fat (P-values p0.01). Age- and sex-adjusted PAEE was positively associated with FFM, fat mass and % fat (P-values o0.001), but not after adjusting for current weight. Age- and sex-adjusted PAEE was positively associated with triglycerides, insulin and systolic blood pressure (P-values o0.05), but not after adjusting for weight and height. PAEE was associated with fasting glucose after controlling for age, sex, weight and height (r ¼ 0.12; P ¼ 0.02). Conclusions: Maternal size, but not birth weight, is a determinant of childhood PAEE. PAEE is not strongly associated with childhood body composition, but is inversely related to fasting glucose concentration.....
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