탁구의 그립 유형별 드라이브 동작 분석

Abstract

The present study analyzed kinematical data such as angle, distance, swing locus and swing posture related to the swing of the racket by grip type in table tennis drive, and drew conclusions as follows. In FHD, the gradient of the racket face was around 60 degrees and the swing angle was around 40 degrees. Compared to that in FHD, the racket face on impact in BHD was over 10 degrees more upright. In FHD, the rightward leanings of the upper body in the stage of back swing were 20 degrees and 24 degrees, respectively, for PHG and SHG, the horizontal rotating angles of the shoulders were 66 degrees and 76 degrees. The gradient of the racket face was not significantly different among the grip types, so it is considered to have a significant effect on the movement of the ball. In BHD, the horizontal rotating angle of the shoulder was significantly different among the grip types and in the stage of back swing the rotating angle of the shoulder that has PHG as the vertical axis appeared high. The reason that the opening angle of the racket on impact in BHD was different according to grip type was probably that, due to the structural characteristic, the opening angle is large when the racket was held in PHG and small in SHG. In BHD, the left‐right distance of the impact was longer for PHG, and the front‐back distance was longer for SHG. In BHD, the highest point of the back swing was more distant from the end line of the table in PHG than in SHG, and the swing locus was almost 8‐shaped in SHG but was slightly different in PHG.