Comparison of bioelectrical impedance analysis and dual-energy X-ray absorptiometry for the assessment of appendicular body composition in anorexic women

Giorgio Bedogni, M. Marra, L. Bianchi, M. Malavolti, E. Nicolai, E. De Filippo, L. Scalfi

Research output: Contribution to journalArticle

Abstract

Objective: To establish the accuracy of bioelectrical impedance analysis (BIA) for the assessment of appendicular body composition in anorexic women. Design: Cross-sectional study. Setting: Outpatient University Clinic. Subjects: A total of 39 anorexic and 25 control women with a mean (s.d.) age of 21 (3)y. Methods: Total, arm and leg fat-free mass (FFM) were measured by dual-energy X-ray absorptiometry and predicted from total and segmental BIA at 50 kHz. The predictor variable was the resistance index (RI), that is, the ratio of height2 to body resistance for the whole body and the ratio of length2/limb resistance for the arm and leg. Results: Predictive equations developed on controls overestimated total, arm and leg FFM in anorexics (P50 kHz give better estimates of appendicular composition in anorexics as compared to Wt.

Original languageEnglish
Pages (from-to)1068-1072
Number of pages5
JournalEuropean Journal of Clinical Nutrition
Volume57
Issue number9
DOIs
Publication statusPublished - Sep 1 2003

Keywords

  • Anorexia nervosa
  • Bioelectrical impedance analysis
  • Body composition
  • Dual-energy
  • Fat-free mass
  • X-ray absorptiometry

ASJC Scopus subject areas

  • Medicine (miscellaneous)
  • Food Science

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