Determinants of free-living energy expenditure in normal weight and obese women measured by doubly labeled water
| Autor: | Lyle D. Broemeling, Robert R. Wove, Jacqueline M. Hibbert, J. Nevin Isenberg |
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| Rok vydání: | 1994 |
| Předmět: |
Adult
Endocrinology Diabetes and Metabolism Physical activity Medicine (miscellaneous) Doubly labeled water Calorimetry Motor Activity Body weight Endocrinology Animal science Medicine Humans Resting energy expenditure Obesity business.industry Body Weight Public Health Environmental and Occupational Health Water Control subjects Deuterium Energy expenditure Normal weight Female Specific dynamic action business Energy Metabolism human activities Food Science |
| Zdroj: | Obesity research. 2(1) |
| ISSN: | 1071-7323 |
| Popis: | Total free-living energy expenditure (TEE) was measured in 9 normal weight controls and 5 obese women using the doubly labeled water (DLW) method. Resting energy expenditure (REE) and the thermic effect of food (TEF) were measured by indirect calorimetry and the energy cost of physical activity (PA) calculated by deduction, in order to quantify the components and identify determinants of free-living TEE. Although REE was quantitatively the major component of TEE in both groups, PA best explained the variability, contributing 76% to the variance in free-living TEE. The obese women had elevated values for TEE (12397 +/- 2565 vs. 8339 +/- 1787 kJ/d, mean +/- SD; p < 0.005), compared with the control women. PA (5071 +/- 2385 vs. 2552 +/- 1452; p < 0.05) and REE (6393 +/- 678 vs. 5084 +/- 259; p < 0.0005) were also raised in the obese, whereas TEF was not significantly different between the groups, accounting for 7.6% of energy expenditure for the obese and 8% for the control subjects. Body weight was the single best determinant of mean daily free-living TEE across both groups. We conclude that PA and body weight are the main determinants of free-living TEE. |
| Databáze: | OpenAIRE |
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