테니스 볼 방향에 따른 포핸드 스트로크 동작 시 상지근의 근전도 분석

Abstract

The object of this research was to examine the difference of the usage and activity of muscles according to the direction of the tennis ball is hit during a forehand-stroke through an EMG analysis. The EMG of 6 female tennis players was measured. 'Mega Win V.2.3.1 software program' was used and the wireless EMG meter 'ME6000 P8 Measurement Unit' was connected to capture the electric signal as the surface electrode. Stroke was divided into 3 phase, and paired t-test has been done to examine the difference of the factor that changes the EMG. Based on the results of research above, following answers were obtained. During the back-stroke phase, the %MVIC value on biceps brachii, triceps brachii, deltoids, and rectus abdominis slightly higher when they made a straight-court versus a cross-court-hit but there was not a statistically meaningful difference. During the forward-swing phase, the %MVIC value on triceps brachii, rectus abdominis, and flexor carpi ulnaris were higher when they made a straight-hit than a cross-court-hit, which was a meaningful difference statistically. During a follow-though phase, the %MVIC value on biceps brachii and deltoids appeared to be higher when they made a straight-hit, and the %MVIC value on flexor carpi ulnaris was higher when they made a cross-court-hit.