Sun et al reported equations for estimating fat-free mass (FFM) using bioelectrical impedance analysis (BIA). The authors are from Wright State University, Columbia University, Department of Agriculture, University of Wisconsin, and NIH.
Analysis: bioelectrical impedance analysis (BIA)
Parameters:
(1) gender
(2) weight in kilograms
(3) stature in cm
(4) resistance in Ohms
FFM in a male in kilograms =
= (0.65 * ((stature)^2) / (resistance)) + (0.26 * (weight)) + (0.02 * (resistance)) - 10.68
FFM in a female in kilograms =
= (0.69 * ((stature)^2) / (resistance)) + (0.17 * (weight)) + (0.02 * (resistance)) - 9.53
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