Characteristics of surface mechanomyogram are dependent on development of fusion of motor units in humans.
Characteristics of surface mechanomyogram are dependent on development of fusion of motor units in humans.
复制标题
表面肌力图的特征取决于人类运动单位融合的发展。
DOI：
--
复制
发表时间：
2002
影响因子：
3.3
通讯作者：
T. Moritani
中科院分区：
文献类型：
--
作者：
Y. Yoshitake;M. Shinohara;H. Ue;T. Moritani
这项研究的目的是测试记录在皮肤上的表面机械肌图(MMG)是否反映人类单个运动单位的收缩特性。确定了腓肠肌内侧的8个运动单位，并对每个分离的运动单位分别给予5、10、15和20赫兹的刺激序列。MMG持续时间与抽动持续时间呈显著正相关。MMG波幅随刺激频率的增加而降低。MMG幅度的减少与力波动的减少是平行的，两者的变化率在所有运动单位中都是正相关的。MMG波幅对力的变化率与一半松弛时间和抽动持续时间呈负相关。在力波动和收缩特性之间也发现了类似的负相关。这些结果支持了MMG与腓肠肌内单个运动单位的收缩特性之间的直接关系，表明表面MMG依赖于人类激活的运动单位的收缩特性。
The purpose of this study was to test whether surface mechanomyogram (MMG) recorded on the skin reflects the contractile properties of individual motor units in humans. Eight motor units in the medial gastrocnemius muscle were identified, and trains of stimulation at 5, 10, 15, and 20 Hz were delivered to each isolated motor unit. There was a significant positive correlation between the duration of MMG and twitch duration. MMG amplitude decreased with increasing stimulation frequency. Reductions in MMG amplitude were in parallel with the reductions in force fluctuations, and the rate of change in both was positively correlated across the motor units. Rate of change in MMG amplitude against force was negatively correlated to half relaxation time and twitch duration. Similar negative correlations were found between force fluctuations and contractile properties. These results provide evidence supporting a direct relation between MMG and contractile properties of individual motor units within the gastrocnemius muscle, indicating that surface MMG is dependent on the contractile properties of the activated motor units in humans.
尝试对人类大鱼际运动单位进行生理学分类。
影响因子：
2.5
作者：
Thomas,CK;Johansson,RS;Bigland-Ritchie,B
通讯作者：
Bigland-Ritchie,B
引起肌肉抽搐的振动和声音。
DOI：
--
发表时间：
1992
期刊：
Electromyography and clinical neurophysiology
影响因子：
--
作者：
Barry,DT
通讯作者：
Barry,DT
影响因子：
2.5
作者：
BIGLANDRITCHIE, B;JOHANSSON, R;WOODS, JJ
通讯作者：
WOODS, JJ