本研究目的為探討男子網球兩種不同型態高壓球上肢關節加速期在運動學之差異。本研究以二度空間一部每秒500 張的高速攝影機拍攝三位男子網球運動員進行原地及後躍高壓球之過程，比較在原地及後躍高壓球的差異，獲得結論如下：一、 後躍高壓球擊球高度比原地高壓球高，原地及後躍高壓球擊球高度的結果，均比發球擊球點高度高。二、 在擊球後，高壓球的球拍速度比發球減速得更快。三、 高壓球擊球符合動力鏈及鞭打動作的原理。四、 為精準的控制球的方向與飛行落點，高壓球在擊球點前，球拍會稍微減速去擊球。

The purpose of this study was to conduct kinematical analysis of different smash in male tennis players. The study used 2-D Mega Speed high speed photography(500frames/sec). And compare the difference between the static smash and the backward-jumping smash. The results were concluded as follows:1. The height of impact by the backward-jumping smash is higher than the static smash. The height of impact by the backward-jumping smash and the static smash are higher than serve. 2. The racquet velocity of smash decelerated fast than serve. 3. The smash strokes were to fit in with the principle of Kinetic chain. 4. The racquet would decelerate on pre-impact of smash to impact due to accuracy.