Long-term practice induced plasticity in the primary motor cortex innervating the ankle flexor in football juggling experts.
Long-term practice induced plasticity in the primary motor cortex innervating the ankle flexor in football juggling experts.
复制标题
在足球杂耍专家中，长期练习会导致支配踝关节屈肌的初级运动皮层产生可塑性。
作者：
M. Hirano;S. Kubota;T. Morishita;K. Uehara;Shusaku Fujimoto;K. Funase
本研究的目的是调查的可塑性M1支配胫骨前肌（TA）诱导的足球杂耍使用经颅磁刺激（TMS）技术的长期实践。十名足球杂耍专家和十名新手参与了这项研究。运动诱发电位（MEP）和H-反射记录从右TA在等长背屈在10%的最大随意收缩。专家组的MEP输入-输出曲线比新手组陡，短间期皮层内抑制和长间期皮层内抑制减少。相比之下，Hmax与Mmax的比值在组间无差异。我们的研究结果表明，足球杂耍专家表现出增强的兴奋性，在M1支配TA，这是由长期的实践所需的踝关节动作，以执行足球杂耍好。
The aim of this study was to investigate the plasticity of M1 innervating the tibialis anterior muscle (TA) induced by the long-term practice of football juggling using a transcranial magnetic stimulation (TMS) technique. Ten football juggling experts and ten novices participated in this study. Motor evoked potentials (MEP) and the H-reflex were recorded from the right TA during isometric dorsiflexion at 10% of maximum voluntary contraction. The MEP input-output curve of the experts was steeper than that of the novices, and reduced short-interval intracortical inhibition and long-interval intracortical inhibition were observed in the experts. In contrast, the ratio of Hmax to Mmax did not differ between the groups. Our results show that football juggling experts displayed enhanced excitability in the M1 innervating the TA, which was induced by the long-term practice of the ankle movements required to perform football juggling well.