Scafoglieriet al reported an equation for predicting appendicular fat mass. The authors are from multiple institutions in Europe.
Patient selection: > 65 years of age with functional limitation in Europe
Parameters:
(1) height in centimeters
(2) resistance by BIA in Ohms at 50 kHz
(3) sex (female =1, male = 0)
(4) body weight in kilograms
(5) reactance in Ohms
impedance index =
= ((height)^2) / (resistance)
appendicular lean mass in kilograms using GE Lunar =
= (-0.093 * (impedance index)) + (4.295 * (points for sex)) + (0.272 * (weight)) - 6.553
appendicular lean mass in kilograms using Hologic =
= (-0.142 * (impedance index)) + (4.453 * (points for sex)) + (0.316 * (weight)) - (0.040 * (reactance)) - 4.716
