卓球各種打法に関する研究(V) : 球速及び正確性について

概要

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The purpose of his study was to investigate the speed and the accuracy of smash strokes of forehand in which conditions of various timing and hitting point in table tennis. Two male subjects participated in the world championships, and one of them participated in The 24th Soeul Olympic Games. The pictures of the action in hitting was recorded by a video cassette recorder while the reaction of three dimentional forces of forceplate and the wave of impact on the racket were synchronized on date recorder. The results obtained as followes. 1) The ball speed were between 17.6m sec. and 26.0m sec., and the accuracy were 69 % and 74 %. 2) Player with higher performance showed higher accuracy of smash strokes in front position trend to use his leg and arm more efficiently and sufficiently for make the distance the middle point of a circle of turning of trunk shorter. 3) Player with higher performance showed higher speed of smash strokes in middle position trend to use his leg and arm more efficiently and sufficiently for make the distance the middle point of a circle of turning of trunk longer. The results obtained were as follows. It was guessed that to control the distance the middle point of a circle of turning of trunk strongly influenced on the accuracy and the speed of ball smashed in front and middle position.
1989-03-25