Differences in the EMG pattern of leg muscle activation during locomotion in Parkinson's disease.
Differences in the EMG pattern of leg muscle activation during locomotion in Parkinson's disease.
复制标题
帕金森病运动过程中腿部肌肉激活的肌电图差异。
作者：
G. Albani;G. Sandrini;G. Künig;C. Martin;A. Mauro;R. Pignatti;C. Pacchetti;V. Dietz;K. Leenders
在这项初步研究中，腿部肌肉激活的肌电图模式进行了研究，在五个帕金森病患者（B1）和五个没有（B2）冻结。采用表面肌电（EMG）技术，对两种不同带速的踏车行走过程中腓肠肌内侧肌（GM）和胫骨前肌（TA）的活动进行了分析。与对照组相比，两组在较低的速度下均显示GM活性降低和TA过度活跃。在增加速度后，B2组患者显示出明显的GM反应（增量指数100%），而B1组观察到中度变化。GM的不良募集通常是帕金森氏症步态的特征;这种模式在具有步态冻结的帕金森氏症患者中更为明显，这些患者表现出GM对运动速度变化的适应性丧失。
In this pilot study, EMG patterns of leg muscle activation were studied in five parkinsonian patients with (B1) and five without (B2) freezing. Gastrocnemius medialis (GM) and tibialis anterior (TA) activity was analysed, by means of surface electromyography (EMG), during treadmill walking at two different belt speeds. Both groups showed reduced GM activity and an overactive TA at the lower speed compared with controls. Upon increasing the speed, the B2 patients showed a marked GM response (increment index 100%), while a moderate change was observed in the B1 group. Poor recruitment of the GM characterises parkinsonian gait in general; this pattern is much more marked in parkinsonian patients with freezing of gait, who show a loss of GM adaptation to variation of locomotion speed.