Patent ID: 7065399

Claim:
A muscle fatigue level measuring device comprising: impedance component measuring means, muscular tissue effective length measuring means biologically equivalent model parameter computation means, and muscle fatigue level determination means, wherein the impedance component measuring means measures a resistance component and a reactance component in a body part as impedance in the body part, the muscular tissue effective length measuring means measures a muscular tissue effective length in the body part, the biologically equivalent model parameter computation means computes biologically equivalent model parameters including extracellular fluid resistivity and distribution membrane capacitance based on the resistance component and reactance component measured by the impedance component measuring means and the muscular tissue effective length measured by the muscular tissue effective length measuring means, and the muscle fatigue level determination means determines a muscle fatigue level based on the ratio between the extracellular fluid resistivity and distribution membrane capacitance computed by the biologically equivalent model parameter computation means.