Patent ID: 7110809

Claim:
Muscle fatigue measuring equipment comprising: myoelectric change acquiring means, extracellular fluid change acquiring means, and muscle fatigue status determining means, wherein the myoelectric change acquiring means acquires a myoelectric change of a living body, the extracellular fluid change acquiring means acquires a change in extracellular fluid of the living body, and the muscle fatigue status determining means determines a muscle fatigue status from the myoelectric change acquired in the myoelectric change acquiring means and the change in extracellular fluid acquired in the extracellular fluid change acquiring means in accordance with criteria for determining a muscle fatigue status based on a myoelectric change and a change in extracellular fluid, wherein the myoelectric change acquiring means comprises: myoelectric potential measuring means, first storage means, and myoelectric change computing means, the myoelectric potential measuring means measures a myoelectric potential occurring along with the movement of a muscle of a living body so as to determine a myoelectric value, the first storage means stores an arithmetic expression for determining a myoelectric change and a myoelectric value at a base time, and the myoelectric change computing means computes a myoelectric change by substituting the myoelectric value determined by the myoelectric potential measuring means and the myoelectric value stored in the first storage means into the arithmetic expression stored in the first storage means, and the extracellular fluid change acquiring means comprises: biological impedance measuring means, second storage means, and extracellular fluid change computing means, the biological impedance measuring means provides an alternating current to a living body and measures a voltage caused by a biological impedance so as to determine an extracellular fluid, the second storage means stores an arithmetic expression for determining a change in extracellular fluid and an extracellular fluid at a base time, and the extracellular fluid change computing means computes a change in extracellular fluid by substituting the extracellular fluid determined by the biological impedance measuring means and the extracellular fluid stored in the second storage means into the arithmetic expression stored in the second storage means.