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The physiological mechanism mediating the effect of training on bilateral deficit

训练对双侧缺陷影响的生理机制

基本信息

批准号：
09680123
负责人：
TANIGUCHI Yuko
金额：
$ 0.64万
依托单位：
International Budo University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
1997
资助国家：
日本
起止时间：
1997 至 1999
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-09680123/
关键词：
bilateral deficit strength reaction time resistance training practice reaction time hemifield stimulus crossed response uncrossed response

项目摘要

It was reported that when the upper or lower limbs were used in a simultaneously bilateral manner, bilateral deficit was observed compared to that in a unilateral manner (Vandervoort et al., 1984; Koh et al., 1993). This project were to determine the effect of resistance training or practice for shortening the response speed on the bilateral deficit and to investigate the mechanism mediating it. Findings from the project were as follows.Force exerted bilaterally was increased more by bilateral training and force exerted unilaterally was increased more by unilateral training. Therefore, lateral specificity exists in the effect of resistance training. Bilateral indices (BI) (Howard & Enoka, 1991) for the untrained upper/lower limb of the unilateral training group were shifted in a negative direction as for trained lower/upper limb. However, Bis for the untrained upper/lower limb in the bilateral training group were not shifted in a positive direction as these indices are for trained lower/upper limb.Practice in shortening the response speed improved the reaction time. However, BI was not changed because the bilateral reaction time shortened accompanying with unilateral left reaction time. It was suggested that a program for unifying responses of the left and right hand exists in the right hemisphere and that bilateral reaction time was elongated by this added process. Though bilateral deficit in strength and reaction time seemed to be the same phenomenon, mechanisms mediating both phenomenon were not suspected to be completely same.

据报道，当上肢或下肢以同时双侧方式使用时，与单侧方式相比，观察到双侧缺陷（Vandervoort等人，1984; Koh等人，1993年）。本研究旨在探讨阻力训练或缩短反应速度的练习对双侧反应速度缺陷的影响，并探讨其介导机制，结果发现：双侧训练使双侧施加的力增加更多，单侧训练使单侧施加的力增加更多。因此，抗阻训练的效果存在横向特异性。单侧训练组的未训练上肢/下肢的双侧指数（BI）（霍华德& Enoka，1991）与训练下肢/上肢一样向负方向移动。然而，双侧训练组的未训练的上/下肢的Bis并没有像训练的下/上肢那样向正方向移动，缩短反应速度的练习提高了反应时。但由于双侧反应时缩短伴单侧反应时缩短，BI无变化。有人认为，一个程序，统一的反应，左右手存在于右半球和双边反应时间延长了这一增加的过程。虽然双边赤字的力量和反应时间似乎是相同的现象，调解这两种现象的机制并不怀疑是完全相同的。