Flexor carpi radialis surface electromyography electrode placement for evoked and voluntary measures
Flexor carpi radialis surface electromyography electrode placement for evoked and voluntary measures
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DOI：
10.1002/mus.24631
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发表时间：
2015-11-01
期刊：
影响因子：
3.4
通讯作者：
Gabriel, David A.
中科院分区：
文献类型：
--
作者：
Green, Lara A.;McGuire, Jessica;Gabriel, David A.
导言：在这项研究中，我们评估了双极电极记录的可靠性，它允许无失真的复合肌肉动作电位(CMAP)，同时最大限度地减少自愿收缩期间的串扰。方法：24名男性受试者在4次测试中完成了最大程度的腕部屈曲收缩。复合肌肉动作电位也在每次训练过程中被诱发。从腕屈肌(FCR)记录表面肌电信号，记录电极(G1)放置在运动点上，第二记录电极(G2)邻近G1。信度评估采用组内相关分析的方差和测量的标准误差。结果：均方根(RMS)幅值和平均功率频率(MPF)具有较高的可靠性(R=0.89和0.84)。CMAP具有良好的信度(R=0.75)。均方根波幅的归一化降低了组内信度系数(R=0.85)。结论：电极置入可获得可靠的自主收缩和CMAP测量结果。标准化可能会降低可靠性。肌肉神经52：818-825,2015
Introduction: In this study we evaluated the reliability of bipolar electrode recordings, which allow for undistorted compound muscle action potentials (CMAPs) while minimizing cross-talk during voluntary contractions. Methods: Twenty-four men completed maximal voluntary wrist flexion contractions in 4 test sessions. Compound muscle action potentials were also evoked during each session. Surface electromyography was recorded from the flexor carpi radialis (FCR) with the recording electrode (G1) placed on the motor point and a second recording electrode (G2) adjacent to G1. Reliability was assessed using intraclass correlational analysis of variance and standard error of measurement. Results: Root-mean-square (RMS) amplitude and mean power frequency (MPF) were highly reliable (R=0.89 and 0.84, respectively). The CMAPs also exhibited good reliability (R=0.75). Normalization of RMS amplitude reduced the intraclass reliability coefficient (R=0.85). Conclusion: The electrode placement resulted in reliable measures from voluntary contractions and CMAPs. Normalization can decrease reliability. Muscle Nerve52: 818-825, 2015