On practical methods in adjusting the timing for a hand-thrown toss

Abstract

The purpose of this study is to clarify specific movement methods for adjusting the timing. It is used the timing practice of spikes of volleyball as a condition of the trials. Subjects take off from one stepping approach for a hand-thrown toss and catching the ball with both hands in the air while adjusting the timing. The main results are as follows: 1)For adjusting the timing, it was found necessary to use some movement as a preparatory action to obtain the appropriate movement start. 2)The forward tilt and the rocking movement of the trunk and relaxed arms or hands lead to adjusting the timing on a higher toss. 3)The stepping forward and pulling movements of the foot, short stepping, and knee flexion were critical to increasing the number of successes in adjusting the timing task regardless of the height of the toss. 4)From the results of 2) and 3), it was found that there were different phases to increase the number of successes in adjusting the timing task on a high toss. The first was the base phase of movement centered on the trunk. The second was an application phase of movement centered on the foot.