北京生物醫(yī)學(xué)工程

抓舉過程中運(yùn)動(dòng)員的上肢運(yùn)動(dòng)學(xué)分析

Kinematical Analysis of Upper Limb During Squat Snatch

作者：唐剛白雪嶺魏高峰王成燾

單位：上海交通大學(xué)機(jī)械與動(dòng)力工程學(xué)院(上海200240)

關(guān)鍵詞：抓舉；運(yùn)動(dòng)捕捉系統(tǒng)；上肢；平移加速度；角加速度

分類號(hào)：

出版年·卷·期（頁碼）：2011·30·3（233-236）

摘要：

人體運(yùn)動(dòng)過程中，身體各部位的加速度、角加速度等運(yùn)動(dòng)學(xué)參數(shù)對(duì)計(jì)算關(guān)節(jié)力、關(guān)節(jié)力矩及肌肉力等動(dòng)力學(xué)參數(shù)起著至關(guān)重要的作用。文章通過分析人體運(yùn)動(dòng)過程中關(guān)節(jié)坐標(biāo)系相對(duì)世界坐標(biāo)系的瞬時(shí)位置關(guān)系，以及各時(shí)刻關(guān)節(jié)坐標(biāo)系空間位置關(guān)系，提出了基于關(guān)節(jié)坐標(biāo)系的人體運(yùn)動(dòng)學(xué)參數(shù)計(jì)算方法。然后，以運(yùn)動(dòng)員抓舉杠鈴過程中的上肢運(yùn)動(dòng)為例，利用運(yùn)動(dòng)捕捉系統(tǒng)進(jìn)行數(shù)據(jù)采集，計(jì)算出前臂在運(yùn)動(dòng)過程中的質(zhì)心平移加速度和角加速度。結(jié)果表明，前臂質(zhì)心總的平移加速度主要由豎直方向的分量構(gòu)成，而角加速度主要在改變杠鈴軌跡過程中產(chǎn)生。

The kinematical parameters such as translational acceleration and angular acceleration in each segment of human body play an important role in the calculation of the dynamic parameters such as joint force, joint torque, and muscle force during movement. The joint coordinate system (JCS) of human upper limb based on the anatomical landmarks was defined. A novel method based on the JCS for calculating the kinematical parameters was brought forward by means of analyzing the relative position of the JCS to world coordinate system during instantaneous situation and relationship among each JCS at different time during body movement. Finally, a motion capture system was used to gather the data of the upper limb from an elite weight lifter during squat snatch and the method mentioned in forward was applied to analyze the data. The result showed that the total translational acceleration in center of mass mainly came from the vertical direction, while the angular acceleration was generated mainly in the process of changing the barbell trajectory.

參考文獻(xiàn)：

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