4HAGG G M. Interpretation of EMG spectral alternations and alternation indexes at sustained contraction [J]. J. Appl.Physiol. , 1992,73 (4) : 1211-1217.
5WEBBER C L, et al. Influence of isometric loading on biceps EMG dynamics as assessed by linear and nonlinear tools[J]. J.Appl. Physio. , 1995, 78 (3): 814-822.
6BILODEAU M, et al. EMG power spectra of elbow extensors during ramp and step isometric contractions[J]. Eur. J. Appl.Physiol. ,1991, 63:24-28.
7SOKOMONOW M, et al. Electromyogram power spectra frequencies associated with motor unit recruitment strategies[J].J. Appl. Physiol. ,1990,68(3),1177-1185.
8MASUDA T, et al. Recruitment threshold and muscle fiber conduction velocity of single motor unites[J]. J. Electromyogram Kinesiol, 1991, (1): 116-123.
9BOUISSOU P, et al. Surface EMG power spectrum and intramuscular pH in human vastus lateralis muscle during dynamic exercise[J]. J. Appl. Physiol. ,1989,67(3):1245-1249.
10MATSUMOTO T, et al. The relationship between anaerobic threshold and electromyographic fatigue threshold in college women[J]. Eur. J. Appl. Physiol. ,1991,63:1-5.