Effect of long-term classical ballet dance training on post-activation depression of the soleus H-reflex
Effect of long-term classical ballet dance training on post-activation depression of the soleus H-reflex
复制标题
长期古典芭蕾舞训练对比目鱼肌H反射激活后抑制的影响
DOI：
10.1123/mc.2021-0079
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发表时间：
2022
期刊：
影响因子：
1.1
通讯作者：
Kimitaka Nakazawa
中科院分区：
文献类型：
--
作者：
Hiroki Obata;Gee Hee Kim;Tetsuya Ogawa;Hirofumi Sekiguchi;Kimitaka Nakazawa
古典芭蕾舞是研究人类中枢神经系统长期活动依赖性可塑性的一个很好的模型，因为它需要独特的脚踝运动来保持芭蕾舞姿势。本研究的目的是调查激活后抑郁是否可以通过长期特定运动训练得到改变。八名芭蕾舞演员和八名久坐的受试者参加了这项研究。比目鱼肌霍夫曼反射是在踝关节缓慢、被动背屈完成后引发的。结果表明，在两次拉伸后的时间间隔内，古典芭蕾舞演员的比目鱼肌霍夫曼反射的抑制（即激活后抑制）比久坐的受试者更大。这表明，长期特定运动训练带来的可塑性变化也表现在比目鱼肌霍夫曼反射的激活后抑制中。激活后抑郁的增加将增强跖屈肌的脊柱上控制，并可能有助于古典芭蕾舞演员的精细脚踝运动。
Classical ballet dancing is a good model for studying the long-term activity-dependent plasticity of the central nervous system in humans, as it requires unique ankle movements to maintain ballet postures. The purpose of this study was to investigate whether postactivation depression is changed through long-term specific motor training. Eight ballet dancers and eight sedentary subjects participated in this study. The soleus Hoffmann reflexes were elicited at after the completion of a slow, passive dorsiflexion of the ankle. The results demonstrated that the depression of the soleus Hoffmann reflex (i.e., postactivation depression) was larger in classical ballet dancers than in sedentary subjects at two poststretch intervals. This suggests that the plastic change through long-term specific motor training is also expressed in postactivation depression of the soleus Hoffmann reflex. Increased postactivation depression would strengthen the supraspinal control of the plantarflexors and may contribute to fine ankle movements in classical ballet dancers.