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  • Title: [The use of bioimpedance analysis for the assessment of relative body fat in obese women].
    Author: Vsetulová E, Bunc V.
    Journal: Cas Lek Cesk; 2004; 143(8):528-32. PubMed ID: 15446457.
    Abstract:
    BACKGROUND: Bioimpedance analysis (BIA) is often used for the assessment of relative body fat (%BF). The accuracy of the test depends on prediction equation used, which respects the group of population, body composition, age and gender of the individual. The requirement to construct a specific prediction equation for obese population with more than 30% body fat was suggested. The objective of the study was to evaluate the validity of bioimpedance analysis and to develop population-specific prediction equation for obese women. METHODS AND RESULTS: Relative body fat were measured in set of 63 obese women by means of 3 methods: tetrapolar bioimpedance analysis, bipedal bioimpedance analysis and dual energy X-ray absorbtiometry (DEXA). Significant differences were found among mean values of %BF measured by methods above (39.9%, 42.2% and 48.7%, respectively). Significant correlation between results obtained by tetrapolar BIA and by DEXA method was noticed (R=0.73). New specific prediction equation was developed for measuring %BF of obese women by tetrapolar BIA. No good agreement between bipedal BIA and DEXA method was found. CONCLUSIONS: By using the new prediction equation, measurement of the relative body fat in obese women by tetrapolar bioimpedance analysis was comparable with the reference DEXA method.
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