Effects of probable choices on the time required to the block movement in volleyball

Abstract

The purpose of this study was to investigate the time required to the block movement in 3-choice reaction task (3-CRT) and simple reaction task (SRT). The time required to the block movement was divided into 4 phases; reaction time, lateral movement time, grounding time, jump time. The time required to the block movement against right, center and left attack in SRT was shorter than that in 3-CRT (p＜0.05). The jump time against center attack in SRT was also shorter than that in 3-CRT (p＜0.05). The lateral movement time against right attack in SRT was shorter than that in 3-CRT (p＜0.01). No significant correlation was found between height and any phase of the block movement. These results indicate that the decrease of the number of probable choices shorten the duration of block movement in volleyball.