Validity of leg-to-leg bioelectrical impedance measurement in higly active males
Geography. Anthropology. Recreation
Full recordShow full item record
AbstractThe aim of this study was to compare validity of leg-to-leg bioelectrical impedance (BI), method with that of anthropometry, using hydrostatic weighing (HW) as the criterion test. A secondary objective was to cross-validate previously developed anthropometric regression equations as well as to develop a new regression equation formula based on the anthropometric data collected in this study. Three methods for assessing body composition (HW, BI, and anthropometric) were administered to 99 male university athletes. Means, standard deviations of age, weight, height and BMI of athletes were as follows: Age (21.87±2.04), weight (68.95±7.41 kg), height (174.86±6.05 cm), BMI (22.53±1.91 kg/cm2). The mean % fat estimates by BIA (7.9959±3.38) and HW (11.198±2.45) were significantly different (P=0.0001). This result suggests that the leg-to-leg BIA system not valid predict body fat in highly active males. As a result of all cross-validation analyses, we recommend the equation Durnin and Womersley (r=0.934 and SEE=0.86) for highly active male 20-29 years [DB=1.1631-0.0632 (log sum of triceps, biceps, subscapular, suprailiac)]. The new regression formula developed from this study is as follows: % fat=0.432(triceps sf.) + 0.193 (abdominal sf.) + 0.364(biceps sf.) + 0.077(weight) – 0.891 (R=0.843 and SEE = 1.38%).