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Energy expenditures in four men estimated by D/sub 2/ /sup 18/O method at two times. II. From once daily samples of urine or breath

Conference · · Fed. Proc., Fed. Am. Soc. Exp. Biol.; (United States)
OSTI ID:5320950
; ; ; ; ;
To make the doubly labelled water method for determining energy expenditure more applicable in a free-living population, collection of a single daily urine or breath sample would have advantages compared to a 24-hr urine collection. Coward et al. reported the use of a single daily urine sample. In the previously described study, a single urine collection and a fasting morning breath sample were collected from four men during two 21-day periods (fall, F, spring, S) while maintaining their body wts. on controlled diets (20% calories from protein, 40% from fat, 60% from CHO (F); 20% protein, 20% fat, 60% CHO (S)). Urine and breath samples were analyzed to determine disappearance rates of D and /sup 18/O for up to 21 days. Values were compared with metabolizable energy intake levels (EI), with or without corrections for estimated changes in body composition assessed by several methods. Preliminary evaluations suggest that the single daily urine sample values may overestimate and values from the fasting breath samples may underestimate energy expenditure compared to EI.
Research Organization:
Dept. of Agriculture, Beltsville, MD
OSTI ID:
5320950
Report Number(s):
CONF-8604222-
Conference Information:
Journal Name: Fed. Proc., Fed. Am. Soc. Exp. Biol.; (United States) Journal Volume: 45:3
Country of Publication:
United States
Language:
English

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Related Subjects

550501* -- Metabolism-- Tracer Techniques
59 BASIC BIOLOGICAL SCIENCES
ANIMALS
BIOLOGICAL MATERIALS
BIOLOGICAL WASTES
BODY FLUIDS
DEUTERIUM
DIET
DOUBLE LABELLING
EVEN-EVEN NUCLEI
FASTING
FORECASTING
HEAVY WATER
HYDROGEN COMPOUNDS
HYDROGEN ISOTOPES
ISOTOPE APPLICATIONS
ISOTOPES
LABELLING
LIGHT NUCLEI
MAMMALS
MAN
MATERIALS
METABOLISM
NUCLEI
ODD-ODD NUCLEI
OXYGEN 18
OXYGEN COMPOUNDS
OXYGEN ISOTOPES
PRIMATES
RESPIRATION
STABLE ISOTOPES
TRACER TECHNIQUES
URINE
VERTEBRATES
WASTES
WATER
WEIGHT