Potential of M-Wave Elicited by Double Pulse for Muscle Fatigue Evaluation in Intermittent Muscle Activation by Functional Electrical Stimulation for Motor Rehabilitation

Figure 8

An example of measured M-wave amplitudes during repetitive knee extension force production under the isometric condition (subject A). Force (a) and peak-to-peak amplitude of each M-wave (b) are shown. M4p shows the peak-to-peak amplitude of M-wave elicited by the 4th pulse in a pulse burst, and M3mp, M2.5mp, and M2mp mean amplitudes obtained from the additional pulses with 3 ms IPI, 2.5 ms IPI, and 2 ms IPI, respectively.

(a)

(b)