Guazzelli Filho J, Furlani J, De Freitas V
Department of Anatomy, Instituto de Biociências--UNESP, Botucatu, São Paulo, Brasil.
Electromyogr Clin Neurophysiol. 1991 Mar;31(2):93-8.
The trapezius muscle (superior, middle and inferior portions) was analyzed in 20 volunteers. The electromyographic tests were carried out using a four-channel TECA TE 2-7 electromyograph with surface- and single coaxial needle electrodes. In abduction, adduction and flexion-extension, the 3 portions show increasing and decreasing activity, respectively, from the beginning until the end of these movements. In hyperextension, the 3 portions show increasing activity from the beginning until the end of the movement, with greater participation of the middle portion. Significant differences were not observed in the electromyographic profile of the trapezius, using surface and needle electrodes.
对20名志愿者的斜方肌（上部、中部和下部）进行了分析。使用带有表面电极和单同轴针电极的四通道TECA TE 2-7肌电图仪进行肌电图测试。在外展、内收和屈伸运动中，这三个部分在这些运动开始到结束时分别呈现活动增加和减少的情况。在过伸运动中，这三个部分在运动开始到结束时活动均增加，其中中部的参与度更高。使用表面电极和针电极时，斜方肌的肌电图特征未观察到显著差异。
