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运动任务重复练习对体感门控的影响。

Effects of repetitive practice of motor tasks on somatosensory gating.

作者信息

Akaiwa Mayu, Matsuda Yuya, Saito Hidekazu, Shibata Eriko, Sasaki Takeshi, Sugawara Kazuhiro

机构信息

Graduate School of Health Sciences, Sapporo Medical University, Sapporo, Japan.

Department of Occupational Therapy, School of Health Science, Sapporo Medical University, Sapporo, Japan.

出版信息

Front Hum Neurosci. 2023 Mar 29;17:1131986. doi: 10.3389/fnhum.2023.1131986. eCollection 2023.

DOI:10.3389/fnhum.2023.1131986
PMID:37063102
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC10090363/
Abstract

INTRODUCTION

During voluntary muscle contraction, the amplitude of the somatosensory evoked potential (SEP) is reduced by inhibiting sensory information from a peripheral nerve supplying the contracted muscle. This phenomenon is called "gating." We reported that participants with good motor skills indicated strong suppression of somatosensory information. The present study investigated the effects of motor performance improvement following repetitive practice on the SEP amplitude.

METHODS

The ball rotation task (BR task) was practiced by 15 healthy participants repetitively. SEPs were recorded before (pre) and after (post) repetitive practice.

RESULTS

The BR task performance was significantly improved and the required muscle activation to perform the task was significantly reduced after the repetitive practice. The degree of gating was not significant between pre and post- for the SEP amplitude. A significant correlation was found between changes in SEP amplitude from pre to post and performance improvement.

DISCUSSION

After repetitive practice, the degree of gating did not change, but the performance of the BR task improved, and the muscle activity required for the BR task decreased. These results suggest that repetitive practice does not change the degree of gating but changes the mechanism of gating. Furthermore, they indicate that suppression of the somatosensory area may play a role in improving task performance.

摘要

引言

在随意肌收缩过程中，体感诱发电位（SEP）的幅度会因抑制来自供应收缩肌肉的外周神经的感觉信息而降低。这种现象被称为“门控”。我们报告称，运动技能良好的参与者对体感信息有强烈的抑制作用。本研究调查了重复练习后运动表现改善对SEP幅度的影响。

方法

15名健康参与者重复进行球旋转任务（BR任务）。在重复练习前（pre）和后（post）记录SEP。

结果

重复练习后，BR任务表现显著改善，执行该任务所需的肌肉激活显著减少。SEP幅度在练习前后的门控程度无显著差异。发现从练习前到练习后SEP幅度的变化与表现改善之间存在显著相关性。

讨论

重复练习后，门控程度没有改变，但BR任务的表现有所改善，且BR任务所需的肌肉活动减少。这些结果表明，重复练习不会改变门控程度，但会改变门控机制。此外，它们表明体感区域的抑制可能在改善任务表现中起作用。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2ec4/10090363/13ec607803dd/fnhum-17-1131986-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2ec4/10090363/91dda90e0d39/fnhum-17-1131986-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2ec4/10090363/3d953f8f06f8/fnhum-17-1131986-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2ec4/10090363/59ef4f1e7b78/fnhum-17-1131986-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2ec4/10090363/98c02b60affa/fnhum-17-1131986-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2ec4/10090363/dafc8fc2baf6/fnhum-17-1131986-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2ec4/10090363/9ff15b112ed7/fnhum-17-1131986-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2ec4/10090363/dccde3b120c6/fnhum-17-1131986-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2ec4/10090363/13ec607803dd/fnhum-17-1131986-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2ec4/10090363/91dda90e0d39/fnhum-17-1131986-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2ec4/10090363/3d953f8f06f8/fnhum-17-1131986-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2ec4/10090363/59ef4f1e7b78/fnhum-17-1131986-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2ec4/10090363/98c02b60affa/fnhum-17-1131986-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2ec4/10090363/dafc8fc2baf6/fnhum-17-1131986-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2ec4/10090363/9ff15b112ed7/fnhum-17-1131986-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2ec4/10090363/dccde3b120c6/fnhum-17-1131986-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2ec4/10090363/13ec607803dd/fnhum-17-1131986-g008.jpg

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