本研究旨在探討不同技能水準排球選手在四號位置的扣球時宜，研究對象為國立花蓮教育大學排球校隊四號位置主攻擊手、非主攻擊手、系排球隊、無經驗組之男、女生各四組，每組各5名，共40位受試者參與測試。研究工具為Panasonic NV-GS 250 攝影機（60Hz）所拍攝之影片，配合Kwon 3D（3.0版）軟體分析影片；並以單因子變異數分析進行統計考驗，研究結果發現：一、不同技術水準動作之穩定性，各組在起跳時間、起跳球高、擊球點、起跳距離等項目上有顯著差異，呈現：（一）男、女非主攻手的起跳時間最早，顯示慣打快速球者，不因位置不同而有所改變。（二）男、女生組有經驗之選手起跳時球的高度較無經驗者高，故運動技能較好之選手能有較多的時間應用視覺調整攻擊策略。（三）從擊球點分析顯示；男、女主攻手在運動控制上的表現均優於其他組別。（四）男主攻手與無經驗組起跳至擊球距離短於男非主攻手，女主攻手在起跳至擊球距離上均短於其他各組。二、知覺扣球時間上之Tau值在各組之間並無顯著差異。

　　The purpose of this study was to investigate the spike timing of volleyball players with different skill levels at front left position. 40 subjects from National Hualien University of Education were evenly designated to 8 groups according to gender (male and female) and skill levels: primary hitters of university team, non-primary hitters of university team, hitters of department team, and inexperienced hitters. A camera (Panasonic NV-GS 250, Japan) was used to film and a software (Kwon 3D) was adopted for analysis. Data were analyzed using an one-way ANOVA. The main findings of this study were: 1. there were significant differences in the timing of initial jump, the height of initial jump and hit, and the distance of initial jump to hitting point as followings: (1) Non-primary hitters had the fastest timing of initial jump in both gender groups, indicating that they may be used to perform quick attack and did not change their pattern at different positions. (2) Experienced hitters had higher height of initial jump compared with inexperienced hitters in both gender groups, suggesting that the skilled hitters may have more time to adjust their hitting tactic visually. (3) From analysis of hitting height, primary hitters performed better control of spiking approach compared to other groups. (4) Non-primary male hitters had shorter distance of initial jump to hitting point compared with male primary hitters and inexperienced hitters, whereas the female primary hitters had the shortest distance of initial jump to hitting point in all groups. 2. there was no significantly different among groups in perceptive timing of spiking described by Tau.