Development and validation of lean body mass prediction equations for male children aged. 12 - 14 years

Abstract

The objectives of this study were: a) to develop and validate equations to estimate lean body mass of males aged 12 to 14 years old; b) to validate lean body mass equations developed by other researchers. Data were collected from 93 male children aged 12-14 years. A stepwise regression technique was used to develop all prediction equations for lean body mass. Validation analysis of the proposed equations was performed using Pearson’s correlation, paired Student t test, constant error (CE) and standard error estimates (SEE). Four models were developed with bioresistance variables and one model using anthropometric variables. The multiple correlation coeffi cients (Rm) of the equations developed ranged from 0.905 to 0.965 and SEE from 2.413 kg to 1.847 kg. Validation analysis was undertaken using an independent sample of 22 children who were not part of the regression sample. In conclusion, the equations that were developed are valid for male children aged 12 to 14 years old.