Kyle et al developed an equation for estimating the fat-free mass (FFM) of an adult. The authors are from Geneva University Hospital in Switzerland.
Patient selection: 20 to 94 years, BMI 17.0 to 33.8 kg per sq meter
Parameters:
(1) height in centimeters
(2) weight in kilograms
(3) resistance in Ohms at 50 Hz
(4) reactance in Ohms at 50 Hz
(5) sex (male 1, female 0)
fat free mass in kilograms =
= (0.518 * ((height)^2) / (resistance)) + (0.231 * (weight)) + (0.13 * (reactance)) + (4.229 * (points for sex)) - 4.104
Performance:
• Correlation coefficient 0.986, SEE 1.72 kg and technical error 1.74 kg.
