Article

Estimativa da gordura corporal através de equipamentos de bioimpedância, dobras cutâneas e pesagem hidrostática

Revista Brasileira de Medicina do Esporte (Impact Factor: 0.16). 01/2001; 7(4). DOI: 10.1590/S1517-86922001000400003

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Available from: Mauricio Nunes Rodrigues, Jun 03, 2015
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    ABSTRACT: The objective of this study was to compare and correlate the Portable Ultra Sound (US) measuring technique to the skinfold measuring technique (SF) to estimate body fat percentage (%F) in young adults. Sixty military were evaluated, all males, divided in two groups: Group 1 (normal) composed by 30 military with Body Mass Index (BMI) until 24.99 kg/m(2) and Group 2 (overweight) composed by 30 military with BMI > 25 kg/m(2). Weight, height, skinfolds and ultrasound were measured in 9 points (triceps, subscapular, biceps, chest, medium axillary, abdominal, suprailiac, thigh and calf). Body fat average values obtained by skinfold thickness and ultrasound measurements were 13.25 ± 6.32 % and 12.73 ± 5.95 % respectively. Despite significant differences in measurements of each anatomical site, it was possible to verify that the total final body fat percentage calculated by both techniques did not present significant differences and that overweight group presented greater similarity between the values obtained using caliper and ultrasound equipment.
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    ABSTRACT: The bioelectrical impedance analysis (BIA) tetra polar body is taken as whole equipment with better accuracy in the assessment of body composition, but its high cost restricts their use. Yet, the trustworthiness, reliability, and efficiency of these devices are still controversial. This study aimed at comparing different BIA devices for the assessment of body fat percentage (%TBF) of college students. The study included 60 subjects (33 men and 27 women), ages between 18 and 38 years old (23.2±4.7 years). Weight, height, and body mass index (BMI=kg/m²) were assessed. The %TBF was determined by Biodynamics™ (BIO) full-body tetrapolar bioimpedance device, OMRON™ HBF 306 bl (OMR) upperbody bioimpedance device and TANITA™ FS088R (TAN) lower-body bioimpedance device. It was used for statistical analysis the Kruskal-Wallis test to check the variance, analysis of agreement by intraclass correlation and the Bland-Altman. There was no difference between the %TBF values provided by BIO, OMR and TAN devices for men (16.4%, 14.5% and 17.3%; p=0.09) and women (25.7%, 23.5 and 25%; p=0.36). Furthermore, there was a significant correlation between TAN x BIO (0.76; p<0.0001), OMR x BIO (0.73; p <0.001) devices among men, and TAN x BIO (0.76; p<0.0001) and OMR x BIO (0.71; p<0.0001) devices among women. Close to zero average differences were observed in the Bland-Altman plot. There were no significant differences between BIA devices used to determine the %TBF of these individuals. OMRON™ and TANITA™ devices are suitable for use in daily practice.