The authors are from Northwestern State University, Soonchunhyang University, Konkuk University Medical Center, George Mason University, Korean National Sport University and Sungshin Women's University.
Patient selection: older Korean adult from 70 to 92 years of age
Parameters:
(1) resistance index at 250 kHz
(2) sex (1 for male, 0 for female)
(3) reactance at 50 kHz in Ohns
(4) reactance at 5 kHz in Ohms
(5) body weight in kilograms
resistance index =
= ((height in cm)^2) / (resistance in Ohms)
Parameter
Standing
Supine
resistance index
0.286 * (RI)
0.2761 * (RI)
sex
1.367 * (points for sex)
1.151 * (points for sex)
reactance at 50 kHz
0.054 * (reactance)
0
reactance at 5 kHz
0
0.059 * (reactance)
body weight in kg
0.031 * (body weight)
0
constant
-1.864
0.429
predicted appendicular skeletal muscle mass =
= SUM(points for all of the parameters)
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