Comparison of doubly labeled water, intake-balance, and direct- and indirect-calorimetry methods for measuring energy expenditure in adult men
- Energy and Protein Nutrition Laboratory, Beltsville, MD (USA)
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.
- OSTI ID:
- 6643036
- Journal Information:
- American Journal of Clinical Nutrition; (USA), Vol. 52:1; ISSN 0002-9165
- Country of Publication:
- United States
- Language:
- English
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MAN
METABOLISM
ADULTS
BODY COMPOSITION
CALORIFIC VALUE
CALORIMETRY
COMPARATIVE EVALUATIONS
DEUTERIUM
DOUBLE LABELLING
OXYGEN 18
TRACER TECHNIQUES
WATER
WEIGHT
AGE GROUPS
ANIMALS
COMBUSTION PROPERTIES
EVEN-EVEN NUCLEI
HYDROGEN COMPOUNDS
HYDROGEN ISOTOPES
ISOTOPE APPLICATIONS
ISOTOPES
LABELLING
LIGHT NUCLEI
MAMMALS
NUCLEI
ODD-ODD NUCLEI
OXYGEN COMPOUNDS
OXYGEN ISOTOPES
PRIMATES
STABLE ISOTOPES
VERTEBRATES
550501* - Metabolism- Tracer Techniques