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Relationship between physical activity related energy expenditure and body composition: a gender difference

Abstract

OBJECTIVE: The doubly labeled water method for the measurement of average daily metabolic rate (ADMR), combined with a measurement of basal metabolic rate (BMR), permits the calculation of energy expenditure for physical activity. Thus, the relation between physical activity and body composition (%body fat) can be determined. METHOD: We analyzed existing data sets with observations on ADMR, BMR, and %body fat including 290 healthy subjects, age 18–49 y, 146 females and 144 males, from 22 different studies. RESULTS: In a regression analysis, age explained 3–7% and 5–20% of the variation in %body fat in females and males, respectively. Adding physical activity to the model raised the explained variation in %body fat in males (partial r=−0.35, P<0.01). A higher level of physical activity was related to a lower %body fat. In females, there was no relationship between physical activity and body composition (partial r=0.00, n.s.). CONCLUSION: In males, there is a significant inverse cross-sectional relationship between activity energy expenditure and percent body fat, whereas no such relationship was apparent in females.

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Westerterp, K., Goran, M. Relationship between physical activity related energy expenditure and body composition: a gender difference. Int J Obes 21, 184–188 (1997). https://doi.org/10.1038/sj.ijo.0800385

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  • DOI: https://doi.org/10.1038/sj.ijo.0800385

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