兩種桌球橫式握拍方式之檯內反手擰球生物力學分析

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Title:	兩種桌球橫式握拍方式之檯內反手擰球生物力學分析 Biomechanical analyses of two table tennis shakehand grips during backhand flick
Authors:	王李中羿
Contributors:	體育學系運動教練碩博士班
Keywords:	運動學傳統橫式握拍桌球公開組選手 kinematics traditional shakehand grip table tennis open group player
Date:	2017
Issue Date:	2017-10-18 10:41:19 (UTC+8)
Abstract:	本研究主要目的為比較兩種桌球橫式握拍方式對檯內反手擰球技術表現和生物力學之影響。本研究以徵招14名男性桌球公開組選手為受試者，所有受試者分別各完成三次西方式橫式握拍和三次東方式橫式握拍執行檯內反手擰球，研究過程中以紅外線高速攝影機對人體上的反光標誌進行擷取，加上使用測速槍徵測球體飛行速度，最終採用MATLAB軟體分析收集到的運動軌跡現象資料，統計方式以相依樣本t檢定進行比較分析。本研究結果發現達到顯著差異之參數有球速 (西方式球速快於東方式)、引拍起點的肩關節角度 (東方式旋外角度較大)、引拍終點時的肩關節角度 (西方式旋內角度較大) 以及揮拍終點腕關節伸展角速度 (西方式大於東方式)，其餘參數皆無顯著差異。本研究結論，使用西方式握拍會比傳統的東方式握拍達到較佳的生物力學效益，建議未來教練可以教授選手西方式握拍以增加檯內反手擰球技術表現。 Purpose: The purpose of this study was to observe the influence of two different table tennis shakehand grips on biomechanics during backhand flick. Methods: Fourteen collage male table tennis athletes who are shakehand-griped players participated in this study. They were asked to successfully perform three trials of backhand flick using two types of shakehand grips: the western and eastern grips, respectively. The ball velocity was measured by a speed gun and eleven infrared cameras were used to record the movement of the trajectory of reflective marks attached on players’ body. The collected data was analyzed by a MATLAB software and then being contributed to a paired sample t-test. Results: There are significant differences in four variables which are the ball velocity (the western grip is faster than the eastern grip), angle of shoulder joint at the beginning of backswing (the eastern grip has greater external rotation angle than the western grip), angle of shoulder joint at the end of backswing (the western grip has greater internal rotation angle than the eastern grip) and wrist angular velocity at the end of swing (the western grip has higher velocity than the eastern grip). Conclusion: This study showed that the western grip showed significantly greater biomechanical merits than the eastern grip during backhand flick. It is recommended that the instructors can introduce the western grip to players to improve the performance on increasing ball velocity.
Appears in Collections:	[Graduate Institute of Sport Coaching Science ] thesis

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