Energy-intake restriction and diet-composition effects on energy expenditure in men
| Autor: | William V. Rumpler, J L Seale, C. E. Bodwell, C W Miles |
|---|---|
| Rok vydání: | 1991 |
| Předmět: |
Adult
Male medicine.medical_specialty Diet therapy Medicine (miscellaneous) Biology Body weight Energy requirement Animal science Weight loss Internal medicine medicine Humans Nutritional Physiological Phenomena Restricted diet Nutrition and Dietetics Respiration Body Weight Diet composition Diet Endocrinology Energy expenditure Body Composition Composition (visual arts) medicine.symptom Energy Intake Energy Metabolism Sleep |
| Zdroj: | The American Journal of Clinical Nutrition. 53:430-436 |
| ISSN: | 0002-9165 |
| DOI: | 10.1093/ajcn/53.2.430 |
| Popis: | Eight men were fed at maintenance for 2 wk, followed by 4 wk at 50% of maintenance, then 1 wk at maintenance. The diets were formulated to contain either 40% or 20% of energy from fat. Daily energy expenditure (24-h EE) was determined by indirect calorimetry at the end of the 2-wk maintenance period; on days 1, 7, and 28 of reduced energy intake; and on days 1 and 7 of refeeding. During the reduced-energy period, body weight decreased from 96.6 to 91.5 kg and body fat decreased from 30.4% to 27.7%. There were no significant differences in 24-h EE or energy requirements per unit body weight due to diet composition or weight loss. Maintenance metabolizable-energy (ME) requirement averaged 31.0 kcal/kg body wt. Overall, the efficiency of ME use relative to body stores was 0.87 and was greater for high-fat than for low-fat diets. There was some evidence of an increase in the efficiency of energy use of body stores after weight loss. Substrate use reflected diet composition and energy-balance status independent of changes in body composition. |
| Databáze: | OpenAIRE |
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