Energy expenditures in four men estimated by D/sub 2/ /sup 18/O method at two times. I. From 24 hr urine samples
Four men (I-IV) were fed controlled diets with adjustment of energy intakes until body weights were constant for 3 wks (fall (F)) or 2 wks (spring (S)) and then maintained on the same diets for 3-4 weeks after dosing with D/sub 2/ /sup 18/O. Disappearances of D and /sup 18/O, measured in 24 hour urine (21 days), were used to estimate energy expenditures (EE) compared to metabolizable energy intakes (EI) needed to maintain body wt. EI were obtained from gross energy values (bomb calorimetry) of diet composites corrected for fecal and urinary losses. One subject (IV) consumed ETOH (18-20% of total calories). Among subjects, daily EI varied from 2500 to 3100 Kcal; 21-day mean +/-S.D. body wts. were (I) 66.3 +/- 0.3(F), 67.2 +/- 0.3(S); (II) 73.6 +/- 0.2(F), 74.2 +/- 0.3 (S); (III) 80.2 +/- 0.3(F), 77.6 +/- 0.4(S); (IV) 69.4 +/- 0.4(F), 70.7 +/- 0.4(S). For I and II, F and S intakes and EE values were similar; for III, S values were lower than F values. Small changes in body composition were observed; allowing for these altered relations between EE and EI. EE values were anomalous for IV; for subjects with high intake levels of fluids/ETOH, special methodology may be needed.
- Research Organization:
- Dept. of Agriculture, Beltsville, MD
- OSTI ID:
- 5277773
- Report Number(s):
- CONF-8604222-; TRN: 86-030490
- Journal Information:
- Fed. Proc., Fed. Am. Soc. Exp. Biol.; (United States), Vol. 45:3; Conference: 70. annual meeting of the Federation of American Society for Experimental Biology, St. Louis, MO, USA, 13 Apr 1986
- Country of Publication:
- United States
- Language:
- English
Similar Records
Energy expenditure in underweight free-living adults: impact of energy supplementation as determined by doubly labeled water and indirect calorimetry
Comparison of doubly labeled water, intake-balance, and direct- and indirect-calorimetry methods for measuring energy expenditure in adult men
Related Subjects
MAN
METABOLISM
BODY COMPOSITION
DEUTERIUM
DIET
FECES
INTAKE
MALES
MEASURING METHODS
OXYGEN 18
TRACER TECHNIQUES
URINE
WEIGHT
ANIMALS
BIOLOGICAL MATERIALS
BIOLOGICAL WASTES
BODY FLUIDS
EVEN-EVEN NUCLEI
HYDROGEN ISOTOPES
ISOTOPE APPLICATIONS
ISOTOPES
LIGHT NUCLEI
MAMMALS
MATERIALS
NUCLEI
ODD-ODD NUCLEI
OXYGEN ISOTOPES
PRIMATES
STABLE ISOTOPES
VERTEBRATES
WASTES
550501* - Metabolism- Tracer Techniques