The interrelation between excitation and inhibition during voluntary movements plays a major role in the mechanism of motor control. The focus of many studies has been on inhibitory phenomenon during voluntary movement which seemed to be one of the fundamental mechanisms in skilled acts. The present study was designed to investigate early detection of elite sportsman associated with neuromuscular function.
　It has been observed that the premotion silent period (PSP) appears just before a rapid voluntary movement. In the present study, the relationship between the degree of experience in the sports and the rate of appearance in the PSP was investigated on 56 healthy subjects ranging in ages from 18 to 23 years old. The subject was requested to extend his elbow joint responding to a flashing lamp as quickly as possible. The EMG activities of triceps and biceps brachii were recorded by bipolar surface electrodes, and the mechnical response was simultaneously recorded. It was found that the rate of appearance in PSP on sportsman group (kendo, track & field, tennis, soccer and baseball players) was relatively higher than untrained group. There was no difference between trained group and untrained group in the premotor time, motor time and peak force. It was suggested that the appearance of PSP indicated basic mechanism in the development of motor control of sportsman.

DESCENTE SPORTS SCIENCE Vol.8/THE DESCENTE AND ISHIMOTO MEMORIAL FOUNDATION FOR THE PROMOTION SPORTS SCIENCE