ACTION-POTENTIAL VELOCITY-MEASUREMENTS IN THE UPPER TRAPEZIUS MUSCLE
ACTION-POTENTIAL VELOCITY-MEASUREMENTS IN THE UPPER TRAPEZIUS MUSCLE
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DOI：
10.1016/1050-6411(93)90012-l
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发表时间：
1993-12-01
影响因子：
2.5
通讯作者：
HAGG, GM
中科院分区：
文献类型：
--
作者：
HAGG, GM
研究了用表面电极测量斜方肌上部动作电位速度（APV）的可行性。采用连接双差动放大器系统的四杆电极阵列。在PC机上实现极性相关算法估计APV。6名女性和6名男性参与了调查。尝试在五个电极位置获得可接受的APV估计，沿上边缘间隔5mm，从最远端开始。在矢状面水平伸出手臂时收集数据。结果表明，该方法对六分之五的男性有效，而对女性群体很难得到可靠的估计。此外，两个最远的电极位置给出了最好的结果。在这两个地点，雄性的平均APV为4.8 m s-1， SD为0.9。女性组的困难可能是由于肌肉尺寸小和皮下脂肪。使用双重微分技术似乎是必要的；单差法的尝试是徒劳的。
The feasibility of action potential velocity (APV) measurements in the upper trapezius muscle with surface electrodes has been investigated. A four-bar electrode array connected to a double differential amplifier system was used. APV was estimated by a polarity correlation algorithm implemented on a PC computer. Six females and six males participated in the investigation. Attempts to get acceptable APV estimates were made in five electrode locations, 5 mm interspaced along the upper rim, beginning in the most distal part. Data were collected while holding out the arm horizontally in the sagittal plane. The results indicate that the method worked in five out of six males while it was difficult to get reliable estimates in the female group. Furthermore, the two most distal electrode locations gave the best results. In these two locations, the average APV for males was 4.8 m s-1, SD 0.9. The difficulties in the female group were possibly due to small muscle dimensions and subcutaneous fat. Use of the double differential technique seems to be essential; attempts with the single differential technique were fruitless.