Energy expenditures in four men estimated by D/sub 2/ /sup 18/O method at two times. I. From 24 hr urine samples

Conference · Sat Mar 01 04:00:00 EST 1986 · Fed. Proc., Fed. Am. Soc. Exp. Biol.; (United States)

OSTI ID:5277773

Bodwell, C E; Miles, C W; Seale, J L; Canary, J J; Prather, E S

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-
• Conference Information: Journal Name: Fed. Proc., Fed. Am. Soc. Exp. Biol.; (United States) Journal Volume: 45:3
• Country of Publication: United States
• Language: English

Related Subjects

550501* -- Metabolism-- Tracer Techniques
59 BASIC BIOLOGICAL SCIENCES
ANIMALS
BIOLOGICAL MATERIALS
BIOLOGICAL WASTES
BODY COMPOSITION
BODY FLUIDS
DEUTERIUM
DIET
EVEN-EVEN NUCLEI
FECES
HYDROGEN ISOTOPES
INTAKE
ISOTOPE APPLICATIONS
ISOTOPES
LIGHT NUCLEI
MALES
MAMMALS
MAN
MATERIALS
MEASURING METHODS
METABOLISM
NUCLEI
ODD-ODD NUCLEI
OXYGEN 18
OXYGEN ISOTOPES
PRIMATES
STABLE ISOTOPES
TRACER TECHNIQUES
URINE
VERTEBRATES
WASTES
WEIGHT