雙槓Bhavsar動作之運動學分析

黃泰益 ； 林暐庭

《高師大體育》 15期 (2016/12) Pp. 23-36

https://doi.org/10.6305/PENKNU.2016.15.3

摘要

目的：本旨在Bhavsar動作的運動技術特徵及運動學參數之差異。方法：本研究以一部Redlake攝影機(頻率250Hz，快門為1/500sec)拍攝一名台灣師大選手所實施之Bhavsar動作的2D影像，並進行影像數位化及運動學分析，以了解影響完成Bhavsar動作之重要因素，以作為教練與選手進行訓練時的參考依據。結果：一、在雙槓實施Bhavsar動作振浪時間要早於單槓特卡切夫動作。二、髖關節角速度在擺腿後呈現先增加後趨緩情況，主因是在脫放手時，上半身會急速向上帶動，而下肢則必須保證騰越一定高度於槓後作出分切動作。三、雙槓Bhavsar動作軌跡為向前上方移動，而非成圓周性運動。結論：在壓肩留腳位置強調重心下壓，藉以儲藏肌肉中的彈性位能，並且在脫放手位置肩關節迅速拉開向上，同時踝關節反制向下踩地，形成與原本方向相反的翻轉，並順勢的進行快速擺越為此動作成功的重要特鍵及練習重點。

關鍵字

雙槓 ； Tippelt ； Bhavsar

並列摘要

Purpose: The purpose of this study is to compare the difference with the technical feature and the kinematics parameter. Method: A Redlake cameras (frequency of 250Hz, the shutter is 1/500sec) take a player by the implementation of the National Taiwan Normal University Bhavsar action of 2D images, and make digital imaging and motion analysis, to understand the impact of the completion of Bhavsar action important factor, as coaches and players during a training reference. Result: 1. Implement Bhavsar in parallel bars swing action much earlier implement Tkatchev in horizontal bar. 2. Hip joint angular velocity after the kick first and then increase slowed, the main reason is to let go off when the upper body will rapidly drive upwards, while the lower limbs must be made to ensure that straddle vault action after a certain height in bar. 3. The motion track of Bhavsar in Parallel bars is move forward and upward, rather than circumferential movement. Conclusion: In second position stress press center of gravity position down to stored the elastic potential energy in muscle, in fifth position, shoulder quickly pulled up, and ankle while stepping down to opposite the direction and overturned of the original formation, the more quick swing the key to success for this action.

並列關鍵字

Parallel bars ； Tippelt ； Bhavsar