1) LINDSTROM L. Muscular fatigue and action potendial conduction velocity changes studied with frequency analysis of EMG signals. Electromyography. (1970) vol.10, p.341-356.
2) MERLETTI R. Median frequency of the myoelectric signal : Effects of muscle ischemia and cooling. Eur. J. Appl. Physiol.. (1984) vol.52, p.258-265.
3) FALLENTIN N. Motor unit recruitment during prolonged isometric contractions. Eur. J. Appl. Physiol.. (1993) vol.67, no.4, p.335-341.
4) WESTGAARD R. H. Motor unit substitution during sustained contractions : Implications for ergonomics. Proc. 13th International Ergonomics Association, Tampere. (1997) vol.4, p.237-239.
5) KROGH-LUND C. Myo-electric fatigue manifestations revisited : power spectrum, conduction velocity, and amplitude of human elbow flexor muscles during isolated and repetitive endurance contractions at 30% maximal voluntary contraction. Eur. J. Appl. Physiol.. (1993) vol.66, p.161-173.