Distribution of innervation zone and muscle fiber conduction velocity in the biceps brachii muscle.
Distribution of innervation zone and muscle fiber conduction velocity in the biceps brachii muscle.
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DOI：
10.1016/j.jelekin.2022.102637
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发表时间：
2022-04
期刊：
影响因子：
--
通讯作者：
Zhou P
中科院分区：
文献类型：
--
作者：
Li X;Huang C;Lu Z;Wang I;Klein CS;Zhang L;Zhou P
对9名健康青年男性进行了肌肉神经支配区（IZ）和肌纤维传导速度（CV）的空间分布研究。当受试者进行等长屈肘运动时，在最大随意收缩（MVC）的20%至80%的范围内，采集肱二头肌的高密度表面肌电图（EMG）。共鉴定了9498个IZ样品，并使用Radon变换计算CV。使用重复测量ANOVA和多重比较检验，在四个不同的力水平和六个内侧到外侧电极列位置内比较IZ样本分布的中心和宽度。与外侧柱（第3和4列）相比，内侧柱（第5、6和7列）中观察到IZ中心的显着移动（p < 0.05）。类似地，与第3列相比，在第7列和第8列中发现IZ宽度的显著差异（p < 0.05）。相反，肌肉CV不受列位置的影响。相反，肌肉CV在40%和80%MVC下比在20%MVC下更快（p < 0.05）。这项研究的结果增加了肱二头肌肌肉的生理特性的进一步见解。
The spatial distributions of muscle innervation zone (IZ) and muscle fiber conduction velocity (CV) were examined in nine healthy young male participants. High-density surface electromyography (EMG) was collected from the biceps brachii muscle when subjects performed isometric elbow flexions at 20% to 80% of the maximal voluntary contraction (MVC). A total of 9498 samples of IZs were identified and CVs were calculated using the Radon transform. The center and width of IZ sample distribution were compared within four different force levels and six medial to lateral electrode column positions using repeated measures ANOVA and multiple comparison tests. Significant shifts of IZ center were observed in the medial columns (Columns 5, 6, and 7) compared with the lateral columns (Columns 3 and 4) (p < 0.05). Similarly, significant differences in the IZ width were found in Column 7 and 8 compared to Column 3 (p < 0.05). In contrast, muscle CV was unaffected by column position. Instead, muscle CV was faster at 40% and 80% MVC compared to 20% MVC (p < 0.05). The findings of this study add further insights into the physiological properties of the biceps brachii muscle.
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影响因子：
1.2
作者：
Drew PJ;Blinder P;Cauwenberghs G;Shih AY;Kleinfeld D
通讯作者：
Kleinfeld D
影响因子：
5.5
作者：
ANDREASSEN, S;ARENDTNIELSEN, L
通讯作者：
ARENDTNIELSEN, L
影响因子：
3.4
作者：
AQUILONIUS, SM;ASKMARK, H;STALBERG, E
通讯作者：
STALBERG, E
影响因子：
4.6
作者：
MASUDA, T;MIYANO, H;SADOYAMA, T
通讯作者：
SADOYAMA, T
影响因子：
2.5
作者：
Héroux ME;Stubbs PW;Herbert RD
通讯作者：
Herbert RD