| Project/Area Number |
14580032
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
体育学
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| Research Institution | Kobe University |
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Principal Investigator |
KAWABE Shoko Kobe University, Faculty of Human Development, Professor, 発達科学部, 教授 (30153000)
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| Project Period (FY) |
2002 – 2003
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| Project Status |
Completed (Fiscal Year 2003)
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| Budget Amount *help |
¥3,000,000 (Direct Cost: ¥3,000,000)
Fiscal Year 2003: ¥800,000 (Direct Cost: ¥800,000)
Fiscal Year 2002: ¥2,200,000 (Direct Cost: ¥2,200,000)
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| Keywords | voluntary / muscle activities / relaxation / inhibition / processes of acquisition |
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| Research Abstract |
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.
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