Comparison of doubly labeled water, intake-balance, and direct- and indirect-calorimetry methods for measuring energy expenditure in adult men
| Autor: | Joan M. Conway, J L Seale, C W Miles, William V. Rumpler |
|---|---|
| Rok vydání: | 1990 |
| Předmět: |
Adult
Male Radioisotope Dilution Technique Light nucleus Analytical chemistry Medicine (miscellaneous) Doubly labeled water Calorimetry Mean difference Animal science Body Water Activities of Daily Living Humans Nutrition and Dietetics Hydrogen compounds Chemistry Body Weight Calorimetry Indirect Direct calorimetry Middle Aged Calorimeter Energy expenditure Body Composition Energy Intake Energy Metabolism |
| Zdroj: | The American Journal of Clinical Nutrition. 52:66-71 |
| ISSN: | 0002-9165 |
| DOI: | 10.1093/ajcn/52.1.66 |
| Popis: | Energy expenditure (EE) of four adult men on a weight-maintenance diet was estimated by use of doubly labeled water, intake balance, and direct and indirect calorimetry. The doubly labeled water (2H218O) method was used to estimate free-living EE for 13 d. Metabolizable energy (ME) intake was used to estimate free-living EE for 1 wk. The subjects' 24-h EE was measured in a dual direct-indirect room calorimeter on 3 alternate days. Estimates of free-living EE as measured by ME intake and doubly labeled water indicate agreement between the two methods (mean difference +/- SEM, -1.04 +/- 0.63%). Measurements of EE with indirect and direct calorimetry are equivalent (mean difference 0.63 +/- 0.44%). The daily EE measured by doubly labeled water in these free-living adults over a 13-d period was 15.01% greater than the 24-h EE measured within the calorimeter. |
| Databáze: | OpenAIRE |
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