Moglia A, Arrigo A, Bejor M, Cattaneo S, Rascaroli M, Arrigo A, Scelsi R
Center of Clinical Neurophysiology, C. Mondino Foundation, University of Pavia, Italy.
Funct Neurol. 1987 Apr-Jun;2(2):181-7.
The method applied consists of evaluating the power spectra of the electromyographic (EMG) surface signal obtained during maximal isometric effort of the quadriceps femoris muscle. In hemiplegic patients it is possible to observe a particular frequency distribution towards the lowest values of the range considered. This trend might be accounted for by the morphological and enzyme- histochemical studies on the quadriceps femoris showing a selective atrophy of type 2 fibers. During rehabilitation treatment, however, it is imperative to consider parameters such as muscle strength changes and frequency values preferentially activated during the isometric effort (time-course). Observation of the pattern of the power spectra time-course therefore seems to contribute to a better view of the rehabilitation strategies suitable for exploiting the residual motor abilities.
所应用的方法包括评估股四头肌最大等长收缩时获得的肌电图（EMG）表面信号的功率谱。在偏瘫患者中，可以观察到朝着所考虑范围的最低值的特定频率分布。这种趋势可能是由于对股四头肌的形态学和酶组织化学研究表明2型纤维存在选择性萎缩。然而，在康复治疗期间，必须考虑诸如肌肉力量变化以及等长收缩期间优先激活的频率值（时间进程）等参数。因此，观察功率谱时间进程的模式似乎有助于更好地了解适合利用残余运动能力的康复策略。
