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At present, the most widely used model for body composition research is the classic two-component model, which partitions the total body mass into its lean and fat components. The lean component is ...referred to as the lean body mass (LBM) and other portion as the fat mass (FM). In this review, we have concentrated our discussion on this two-component model. Our discussion of two-component model begins with an overview of body composition models. We then describe the main underlying theories of body composition methods in order to demonstrate the concepts that lead to the construction of the generation of predictive equations. In summary, we consider that the measurement of bioelectrical impedance significantly improves the prediction of total body water and/or LBM, as validated in a large heterogenous group of adult and child subjects. Bioelectrical impedance analysis has many advantages over other body composition methods in that it is safe, inexpensive, portable, rapid, easy to perform and requires minimal operator training. This method should be useful in estimating the body compositions of population group, for example in epidemiologic studies, and should be recommended for such purposes.show more
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