Estimation of total body water by bioelectrical impedance analysis

Journal Article · Mon Sep 01 00:00:00 EDT 1986 · Am. J. Clin. Nutr.; (United States)

OSTI ID:5008099

Kushner, R F; Schoeller, D A

Total body water (TBW) measured by bioelectrical impedance analysis (BIA) was directly compared with deuterium-isotope dilution in a total of 58 subjects. First, sex-specific and group equations were developed by multiple regression analysis in (10 each) obese and nonobese men and women. Height/resistive impedance was the most significant variable used to predict deuterium-dilution space (D2O-TBW) and, combined with weight, yielded R = 0.99 and SE of estimate = 1.75 L. Equations predicted D2O-TBW equally well for obese and nonobese subjects. Second, the equations were prospectively tested in a heterogeneous group of 6 males and 12 females. Sex-specific equations predicted D2O-TBW with good correlation coefficients (0.96 and 0.93), total error (2.34 and 2.89 L), and a small difference between mean predicted and measured D2O-TBW (-1.4 +/- 2.05 and -0.48 +/- 2.83 L). BIA predicts D2O-TBW more accurately than weight, height, and/or age. A larger population is required to validate the applicability of our equations.

• Research Organization: Univ. of Chicago, IL
• OSTI ID: 5008099
• Journal Information: Am. J. Clin. Nutr.; (United States), Vol. 3
• Country of Publication: United States
• Language: English

Related Subjects

62 RADIOLOGY AND NUCLEAR MEDICINE
MAN
BODY FLUIDS
BODY COMPOSITION
ELECTROCHEMISTRY
HEAVY WATER
ISOTOPE DILUTION
REGRESSION ANALYSIS
WATER
ANIMALS
BIOLOGICAL MATERIALS
CHEMISTRY
HYDROGEN COMPOUNDS
ISOTOPE APPLICATIONS
MAMMALS
MATERIALS
MATHEMATICS
OXYGEN COMPOUNDS
PRIMATES
STATISTICS
TRACER TECHNIQUES
VERTEBRATES
550601* - Medicine- Unsealed Radionuclides in Diagnostics