不同年齡層棒球投手在投球技術表現之差異探討

10.6169/NCYUJPEHR.14.1.25

李坤哲；陳膺成；曾銀助

軀幹旋轉 ； 肩關節外旋 ； 膝關節伸展

嘉大體育健康休閒期刊

14卷1期（2015 / 04 / 30）

255 - 261

繁體中文

投手的投球表現是棒球運動中最具複雜性與高難度的技術，也是最容易出現運動傷害的動作技術。棒球投手在體能與骨骼肌肉等生理狀態的消耗之大，是眾所皆知的，然而資深選手經過歲月的消耗，在體能與肌力逐漸下滑的情況之下，該如何保持與年輕選手相當的投球速度，其動作技術的表現是否會呈現不同的狀態。本研究以文獻分析法，經參考許多與投球技術相關的研究後，歸納結果如下：一、在跨步階段，資深選手前導腿的跨步幅長較年輕選手小，資深選手在軀幹與骨盆外開角度較小。二、在揮臂準備階段，資深選手的肩關節最大外旋角度較年輕選手來的小，但資深選手旋轉軀幹的時機較晚，可使軀幹產生較大的旋轉速度。三、在球離手瞬間，資深選手會有較小的前導腿膝關節伸展程度與軀幹前傾角度。結論為這些投球技術的轉變，對於較為年長的投手而言，可有效的維持其投球的球速。

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