탁구 포핸드 드라이브 시 비주동팔의 통제가 골반, 몸통, 상완, 라켓의 회전 및 체중 이동에 미치는 영향

Abstract

The purpose of this study is to examine the effects of control over the non-playing arm on the weight shift and the rotation of the pelvic, trunk, upper arm, and the racket at the forehand drive of table tennis. And based on the analysis results, the study has drawn the following conclusions: To sum up results, at WLA, the trunk and the upper arm were not sufficiently rotated in E1, so there was lack of warm-up to increase the rotatory power. And this led to the lack of rotation in the pelvic and the trunk in E2. Also, at WLA, each segment’s ROM was less than NOR, which means that control over the non-playing arm restricts the motions of the pelvic, trunk, and the upper arm. Because of that, at WLA, the angular velocity of the proximal segment failed in forming a whip-like pattern transferring to the distal segment and maximizing the rotatory power. Therefore, WLA showed slower linear velocity of the racket than NOR. In addition, there was lack of rotation to the swinging direction, so the weight shift from the right to the left foot was not properly made and the weight was not loaded properly to give impact.