Hastuti et al used biolectrical impedance to evaluate Indonesian males. The authors are from Universitas Gadjah Mada, Kagawa Nutrition University, Bond University and the University of Tasmania.
Patient selection: males, ages 18 to 65 years
Method of analysis: bioelectrical impedance analysis (BIA)
Parameters:
(1) height in centimeters
(2) weight in kilograms
(3) resistance in Ohms
(4) reactance in Ohms
fat-free mass (FFM) in kilograms =
= (0.291 * (weight)) + (0.448 * ((height)^2) / (resistance)) + (0.072 * (reactance)) + 0.467
fat-mass (FM) in kilograms =
= (0.683 * (weight)) - (0.394 * ((height)^2) / (resistance)) - (0.079 * (reactance)) - 1.423
percent fat-free mass =
= (-0.702 * (weight)) + (0.557 * ((height)^2) / (resistance)) + 89.903
percent body fat =
= (0.702 * (weight)) - (0.557 * ((height)^2) / (resistance)) + 10.097
where:
• Resistance index (RI) = ((height)^2) / (resistance)
• Addition of the equations for percent FFM and percent FM = 1.
