Comparison and cross-validation of anthropometric and bioelectric impedance equations to estimate - Abstract

The objective of this study was to compare and validate the estimation of lean body mass (LBM) in students from the Centre for Training of Reserve Officers by means of a body impedance device, anthropometric and body impedance regression equations. Eighteen men aged 18-19 years took part in the study. Anthropometric measurements consisted of weight (kg), height (cm), abdominal girth (abg, cm), horizontal abdominal skinfold (mm) and body density (BD) by means of hydrostatic weighting. Resistance, reactance and MCMVALH values were obtained from a Valhalla 1990B equipment. Pearson correlation, coefficient of determination, linear simple regression, standard error of estimate and, Student paired t-test were used for data analysis. LBMDEN was obtained after BD and was used as criteria and the anthropometric equations of Wilmore and Behnke (1969), Slaughter and Lohman (1980) and BIA equations for LBM developed by Lohman (1992), Segal et alii (1988) and LBMVALH were the predictor. It was found that only the equation of Wilmore and Behnke, WB1, where, LBM = 44.636 + 1.0817*weight - 0.7396*abg, was validated for the estimation of the LBMDENS of the present sample.