Validation of bioelectrical-impedance analysis as a measurement of change in body composition in obesity

Robert F. Kushner*, Annette Kunigk, Michael Alspaugh, Paul T. Andronis, Catherine A. Leitch, Dale A. Schoeller

*Corresponding author for this work

Research output: Contribution to journalArticle

140 Scopus citations

Abstract

The bioelectrical-impedance-analysis (BIA) method accurately measures body composition in weight-stable subjects. This study validates the use of BIA to measure change in body composition. Twelve obese females underwent weight loss at a mean rate of 1.16 kg/wk. Body composition was measured by deuterium oxide dilution (D2O), BIA, and skinfold anthropometry (SFA) at baseline and at 5% decrements in weight. Highly significant correlations were obtained between D2O and BIA (r = 0.971) and between D2O and SFA (r = 0.932). Overall, BIA predicted change in fat-free mass with greater accuracy (to 0.4 kg) and precision (± 1.28 kg) than did anthropometry (to 0.8 kg and ± 2.58 kg, respectively). We conclude that BIA is a useful clinical method for measuring change in body composition.

Original languageEnglish (US)
Pages (from-to)219-223
Number of pages5
JournalAmerican Journal of Clinical Nutrition
Volume52
Issue number2
DOIs
StatePublished - Jan 1 1990

Keywords

  • bioelectrical impedance
  • total body water
  • weight loss

ASJC Scopus subject areas

  • Medicine (miscellaneous)
  • Nutrition and Dietetics

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