Generalizability of bioimpedance spectroscopy measures

A. Allan Turner, Albert Lozano-Nieto, Marcel Bouffard

Research output: Contribution to journalArticlepeer-review

3 Scopus citations

Abstract

The generalizability of bioimpedance measures was studied for the lying and standing postures, using generalizability theory. The test instrument was a Xitron Hydra ECF/ICF Bio-Impedance Analyzer System Model 4200 (Xitron Technologies, San Diego, CA): 50 healthy men and 50 healthy women volunteered as participants. A 2-facet, person-by-trial, completely crossed design was used, and all facets were treated as random. Data on each body posture, each fluid measurement, and each sex group were independently analyzed. The lying-posture data showed that the trial facet accounted for less than 0.03% of the total variance for extracellular fluid (ECF) and intracellular fluid (ICF). The residual accounted for less than 0.02% of the total variance for ECF and for 9.5% for males and 13.6% for females of the total variance for ICE The standing-posture data showed that the trial facet accounted for less than 0.02% of the total variance for ECF and ICF. The residual accounted for less than 0.05% of the total variance for ECF and for 10.5% for males and 20.4% for females of the total variance for ICF. Overall, the lying posture produced more stable ECF and ICF measures, compared to the standing posture for male and female groups.

Original languageEnglish (US)
Pages (from-to)129-148
Number of pages20
JournalMeasurement in Physical Education and Exercise Science
Volume7
Issue number3
DOIs
StatePublished - Jan 1 2003

All Science Journal Classification (ASJC) codes

  • Orthopedics and Sports Medicine
  • Physical Therapy, Sports Therapy and Rehabilitation

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