ELECTROMECHANICAL DELAY IN BICEPS BRACHII ASSESSED BY ULTRAFAST ULTRASONOGRAPHY
ELECTROMECHANICAL DELAY IN BICEPS BRACHII ASSESSED BY ULTRAFAST ULTRASONOGRAPHY
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DOI：
10.1002/mus.21948
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发表时间：
2011-03-01
期刊：
影响因子：
3.4
通讯作者：
Nordez, Antoine
中科院分区：
文献类型：
--
作者：
Hug, Francois;Gallot, Thomas;Nordez, Antoine
使用超声，我们测试了确定主要肌肉结构/机制对肱二头肌机电延迟的相对贡献的实用性。9名受试者进行了电诱发收缩与回声探头保持在肌肉和myotendinous交界。在肌束运动的起始（Dm，5.57 +/- 1.37 ms）和肌腱连接运动的起始（Dt，5.47 +/- 1.38 ms）之间没有发现差异，而在Dm/Dt和机电延迟（约10 ms）之间发现显著差异。机电延迟可以用作研究神经肌肉疾病或影响兴奋-收缩耦合和/或肌肉力传递的各种约束的影响的模型。肌肉神经43：441-443，2011
Using ultrasound we tested the utility of determining the relative contribution of the main muscle structures/mechanisms to the electromechanical delay in the biceps brachii. Nine subjects underwent electrically evoked contractions with the echographic probe maintained over the muscle and the myotendinous junction. No difference was found between the onset of muscle fascicle motion (Dm, 5.57 +/- 1.37 ms) and the onset of myotendinous junction motion (Dt, 5.47 +/- 1.38 ms), whereas significant differences were found between Dm/Dt and electromechanical delay (approximately 10 ms). Electromechanical delay can be used as a model for studying the effects of neuromuscular disorders or various constraints that affect excitation- contraction coupling and/or muscle force transmission. Muscle Nerve 43: 441-443, 2011