| Title | Physical activity related energy expenditure and fat mass in young children. | | Author(s) | Goran MI, Hunter G, Nagy TR, Johnson R | | Institution | Department of Nutrition Sciences, University of Alabama at Birmingham 35294, USA. | | Source | Int J Obes Relat Metab Disord 1997 Mar; 21(3):171-8. | | MeSH | Adipose Tissue
Body Composition
Calorimetry, Indirect
Child
Child, Preschool
Cross-Sectional Studies
Electric Impedance
Energy Metabolism
Exercise
Female
Food
Humans
Male
Research Support, Non-U.S. Gov't
Research Support, U.S. Gov't, Non-P.H.S.
Research Support, U.S. Gov't, P.H.S.
Rest
Skinfold Thickness
| | Abstract | OBJECTIVE: To examine whether body fat content in pre-pubertal children is influenced by physical activity related energy expenditure (AEE) and/or more qualitative aspects of physical activity.
DESIGN: Cross-sectional study. SUBJECT: 101 pre-pubertal children were examined in Study 1: (age: 5.3 +/- 0.9 y; weight: 20.2 +/- 3.6 kg). In Study 2: 68 of the original children were re-examined (age: 6.3 +/- 0.9 y; weight: 23.6 +/- 5.0 y). MEASUREMENT: Fat mass (FM) and fat free mass (FFM) were determined by bioelectrical resistance and skinfolds; AEE was estimated from the difference between total energy expenditure (TEE) by doubly labeled water and post-prandial resting energy expenditure (REE) by indirect calorimetry; qualitative information on activity was derived by questionnaire.
RESULTS: AEE was significantly correlated with FFM (r = 0.32 in both Studies) and body weight (r = 0.28 in Study 1; r = 0.29 in Study 2), but not FM. There were no significant relationships between AEE and any of the variables from the activity questionnaire in children (including TV time, playing time, and an accumulated activity index in h/week). After adjusting for FFM, age, and gender, FM was inversely related to activity time in h/week (partial r = -0.24 in Study 1; partial r = -0.32 in Study 2) but not AEE (P > 0.5).
CONCLUSION: After adjusting for FFM, age, and gender, a small portion of the variance in body fat mass in children (approximately 10%) is explained by time devoted to recreational activity, whereas none of the variance is explained by the combined daily energy expenditure related to physical activity. | | Language | eng | | Pub Type(s) | Journal Article
| | PubMed ID | 9080254 |
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