期刊
INTERNATIONAL JOURNAL OF OBESITY
卷 29, 期 1, 页码 151-156出版社
NATURE PUBLISHING GROUP
DOI: 10.1038/sj.ijo.0802842
关键词
energy expenditure; physical activity; doubly labeled water; resting energy expenditure
Obesity prevalence rates are increasing worldwide and one prevailing hypothesis is that physical activity levels of modern humans are markedly reduced compared to those of our Paleolithic ancestors. We examine this hypothesis by deriving relative activity energy expenditure from available doubly labeled water and indirect calorimetry data in free-ranging non-human mammals. Our results, given the constraints posed by limited data availability, suggest that a low physical activity level, much less than that observed in free-ranging non-human mammals or highly active humans, is present in modern adult humans living within advanced settings. Our observations lend support to the hypothesis that low activity-related energy expenditure levels contribute to the rising worldwide prevalence of obesity.
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