Electromyography analysis of the trapezius muscles in shoulder stiffness:—Visualization of specific muscle activity based on myogenic potential—
Electromyography analysis of the trapezius muscles in shoulder stiffness:—Visualization of specific muscle activity based on myogenic potential—
复制标题
肩部僵硬时斜方肌的肌电图分析：—基于生肌电位的特定肌肉活动的可视化—
DOI：
10.11318/mii.31.7
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发表时间：
2014
期刊：
影响因子：
--
通讯作者：
S. Nemoto
中科院分区：
文献类型：
--
作者：
Saori Yoshinaga;E. Kuramoto;H. Kinoshita;S. Nemoto
由于肩关节僵硬的特征是主要集中在斜方肌周围的主观症状，客观的评估可能有助于了解这种情况。因此，评估肌肉活动的分布和强度可能有助于确定肩部僵硬的特征。利用肌源性电位地形图，本研究旨在确定肩关节僵硬受试者斜方肌状态的变化。8名健康女性在运动前即刻、运动结束后即刻和20−分钟恢复期结束时从斜方肌区获得表面肌电信号记录。对体表肌电数据进行快速傅立叶变换(FFT)分析，得到功率谱。在分析数据的基础上，以6位分辨率合成了肌源性电位地形图。主诉肩部僵硬的女性在运动结束后立即表现出表面肌电低频域的显著变化。此外，这些变化与受试者报告的主观症状的位置一致。因此，这些事件表明了一种特定于肩部僵硬的现象。使用肌源性电位地形图可以直观地识别肌肉活动的生理变化。
Since shoulder stiffness is characterized by subjective symptoms centered mainly around the trapezius muscle, an objective evaluation may aid in understanding this condition. Thus, assessing the distribution and intensity of muscle activity may help to characterize shoulder stiffness. Using myogenic potential topography, the present study aimed to identify the changes in the state of the trapezius muscle among subjects with shoulder stiffness. Surface electromyogram recordings were obtained from the trapezius region of eight healthy women immediately before exercise, immediately after the end of exercise, and at the end of a 20− min convalescence period. Surface electromyogram data were analyzed by fast Fourier transform (FFT), and power spectra were obtained. Based on the analyzed data, myogenic potential topography was composed at 6-bit resolution. Women who complained of shoulder stiffness showed remarkable changes in the lowfrequency domain of the surface electromyogram immediately after the end of exercise. Further, these changes were in accordance with the positions of the subjective symptoms reported by the subjects. Therefore, these events suggest a phenomenon specific to shoulder stiffness. Visually identifying the physiological alteration of muscle activity is possible using myogenic potential topography.