| Autor: |
Stein, T. P., Hoyt, R. W., Settle, R. G., O'Toole, M., Hiller, W. D. B. |
| Předmět: |
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| Zdroj: |
American Journal of Clinical Nutrition; Mar1987, Vol. 45 Issue 3, p534-539, 6p |
| Abstrakt: |
Energy expenditure of four subjects was measured by the doubly-labelled-water (²H218O) method to determine if energy expenditure could be determined over short periods. Three subjects were studied while they performed 8 h of heavy exercise in a laboratory environment. Urine and blood samples were taken before and after exercise. Estimated energy expended during 8 h of high-intensity exercise (55% VO2 max) for three subjects was 757 ±118 kcal/h by the doubly-labelled-water method using urine and a two-point calculation, which compared favorably with 735 ± 82 kcal/h obtained by respiratory gas exchange. For the fourth subject, daytime, nighttime, and daily energy expenditure was calculated by both the two-pair method and decay-curve analysis of urine and saliva samples collected in the morning and at night. Daytime and nighttime energy expenditures differed significantly (p < 0.05). [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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