탄도적인 손가락의 신전움직임에 있어서 신근과 굴근의 협조 = Coodination of the finger extensor and the flexor muscle in ballistic finger extension Movements

다국어 초록 (Multilingual Abstract)

In this investigation the temporal-spatial characteristics of muscle isometric contraction of shouting in ballistic movement of the musclus biceps brachii flexion was compared between trained kendo athletes and untrained control subjects by surface electromyographic(EMG) analysis Surface EMG from the mid-point of the triceps muscle and biceps muscle, and a hand wrist flesion signal of the wrist were recorded with a personal computer through AD- conversion (1KHz of sampling frequncy). premotor tiem (PMT), motor time (MT), reaction tiem (RT), Max0tension and integrated electromyogram(I-EMG), during 500msec from the were analyxed by bio-information multi-task analyxing program (BIMUTAS Kissei comtec). In the kendo athletes, reaction time was significantly shorter tham that of control group. The shortening of reaction time in kendo athletes was mainly attributed to the shortening of motor time. In the kendo athletes, motor time was significantly shorter than that of control group. In the kendo athletes, I-EMG was significantly high frequency discharge than that of control group. From these results, it is suggested that motor learning is achieved in kendo trained and the maximal is metirc contraction may play an important role in heghtenning the efficiency of ballistic movement in coordination with the shouting.