Studies on processes of acquisition of relaxation and inhibitory control system during human voluntary muscle activities

人体随意肌活动过程中松弛和抑制控制系统获得过程的研究

• 批准号: 14580032
• 负责人: KAWABE Shoko
• 金额: $ 1.92万
• 依托单位: Kobe University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2002
• 资助国家: 日本
• 起止时间: 2002 至 2003
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-14580032/
• 关键词: voluntary; muscle activities; relaxation; inhibition; processes of acquisition

The present studies were intended to investigate the processes of acquisition of inhibitory control system by means of the task of relaxation during human voluntary muscle activities. In 2002, the characteristics of relaxation in the muscle of biceps and triceps brachii, and forearm muscles (finger extensor and flexor) were investigated, and the processes of aquisition of inhibitory control system were also observed. In 2003, an object of the study was shifted to the leg muscles, characteristics of relaxation in the muscles of rectus femoris and biceps femoris were investigated. As each research is consisted of two experiments, total 4 experiments were conducted in the present studies.The main results are derived from these experiments as follows:1.Response patterns of relaxation in muscles of biceps brachii of upper arm are improved after more than ten trials.2.The latency of relaxation in force curve is about 500 msec.in both first trial and the last trial. The difference between the latencies of muscle relaxation and contraction (about 150 msec.) was remarkable.3.It is supposed that it is very difficult to cancel the executing command in the central nervous system.4.Relaxation patterns on EMG in lower leg muscles were disturbed, and were due to the difference of the ratio of nerve-muscle innervation between leg and arm muscles.

本研究旨在通过放松任务来研究人随意肌活动中抑制性控制系统的获得过程。2002年，研究了肱二头肌、肱三头肌和前臂肌肉（指伸肌和指屈肌）的松弛特征，并观察了抑制控制系统的获取过程。在2003年，研究对象转移到腿部肌肉，股直肌和股二头肌的肌肉松弛特性进行了研究。由于每个研究由两个实验组成，因此本研究共进行了4个实验，主要结果如下：1.上臂肱二头肌肌肉的松弛反应模式在10次以上的试验后得到改善; 2.力曲线的松弛潜伏期在第一次和最后一次试验中均在500msec.in。肌肉松弛和收缩的时间差（约150毫秒）。4.小腿肌肉肌电图的松弛模式被打乱，这是由于小腿肌肉和上臂肌肉的神经-肌肉神经支配比例不同所致。