手榴彈投擲動作之運動學分析

Kinematics Analysis of the Grenade Throwers Who have Elite in Taiwan Army

黃國揚(Kuo-Yang Huang)

《國防大學通識教育學報》 6期 (2016/07) Pp. 171-187

摘要

本研究主要目的在於分析手榴彈投擲時，出手瞬間角度、各關節位移速度、角度及出手後手榴彈瞬間速度，對手榴彈基本投擲成績表現之影響。研究以陸軍步兵學校專業軍官班受訓學員男、女各乙員為研究對象，並以Kwon3D 動作分析軟體計算與擷取各項運動學參數，並將所得參數套入SPSS 12.0 for Windows統計套裝軟體進行統計分析。研究主要以描述性統計與皮爾遜積差相關進行各項運動學參數之分析，進而建立一個手榴彈投擲技術力學模式。最後依據本研究之實驗成果，綜合整理得出以下結論：一、投擲手榴彈時上肢肢段以右腕關節速度、右肘關節角度、左肩關節角度、左肘關節角度對手榴彈投擲距離具有顯著的影響；下肢肢段以右髖關節速度、左髖關節速度、左膝關節速度、左膝關節角度對手榴彈投擲距離具有顯著的影響。二、投擲出手角度與手榴彈離手時的瞬間速度對手榴彈投擲距離具有顯著影響。三、手榴彈投擲的動作要領在於身體旋轉帶動、瞬間投擲角度以及加大投擲時的旋轉半徑等三大要素。因此建議往後在手榴彈投擲訓練中，可針對該三項要素作投擲練習，達到事半功倍之訓練成效。

關鍵字

手榴彈 ； 動作分析 ； 運動學

並列摘要

The purpose of the study is to explore the grenade score which was influenced on the angle of release, the velocity and angle of joints, and the velocity of grenade when the grenade was released in the moment. Masculine and feminine receiving training student from the specialized reserve officer class in Army Infantry School were selected as research participants for analyses. Kwon3D motion analysis system was used to analyze and obtain sport parameters. SPSS 12.0 for Windows were applied for statistical analyses. The descriptive statistics method and Pearson's product correlation were carried out to analyze parameters of Kinematics. Results are as follows: 1. The velocity of right wrist joints, the angle of right elbow joints, the angle of left shoulder joints and the angle of left elbow joints are significant with the distance of release; the velocity of right hip joints, the velocity of left hip joints, the velocity of left knee joints and the angle of left knee joints are significant with the distance of release. 2. The angle of release and the velocity of grenade in the moment are significant with the distance of release. 3. According to the study that the grenade score is effected by the twisting body, the velocity of grenade in the moment and increasing radius of twisting body. By result of this study increasing training in the twisting body, the velocity of grenade in the moment and increasing radius of twisting body will gain more the grenade score than before.

並列關鍵字

Grenade ； Motion analysis ； Kinematics