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題名 | 我國青年男子排球選手鄭友裕跳躍發球動作之運動學分析=A Kinematic Analysis of Yeou-yu Cheng's Jump Service in Volleyball |
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作者 | 廖德秦; Liao, Te-chin; |
期刊 | 國立體育學院論叢 |
出版日期 | 20010400 |
卷期 | 11:2 2001.04[民90.04] |
頁次 | 頁123-137 |
分類號 | 528.954 |
語文 | chi |
關鍵詞 | 排球; 跳躍發球; 運動學; Folleyball; Jump service; Kinematics; |
中文摘要 | 發揮是排球比賽中第一回合的進攻手段,也是一項先發制人、直接得分的進攻技術。1999國際排球總會(FIVB)將規則修改為“得球得分制"後,球賽的勝負幾乎已決定在球隊發球時能得多少分而定,所以發球的攻擊性及準確性更顯得重要。本研究試圖以力學原理為基礎,對影響跳躍發球動作因素量化分析,以作為檢視與評估之依據,提供教練日後訓練與指導之參考。 本研究以國立臺灣師範大學男子排球選手鄭友裕同學為對象,採用Panasonic AG-450高速攝影機,以每秒60個field之速度,進行跳躍發球動作之拍攝、影片分析,所得資料經由Peak Performance System數位化,其結果如下: 一、 助跑期:助跑距離2.98公尺、步幅分配為第一步小於第二步小於第三步;其步幅為0.54公尺、0.97公尺、1.47公尺;助跑末速為3.88公尺/秒;下肢踏入角度為68.71度,有助於助跑加速度。 二、 起跳期:膝關節下蹲角度為113.89度;起跳角度為62.72度;起跳時重心合速度為3.96公尺/秒;起跳點至端線水平距離0.21公尺。 三、 空中期:身體重心水平位移0.74公尺;身體重心垂直位移0.78公尺;擊球點高度為3.03公尺。 |
英文摘要 | Service is means of the first round attack in a volleyball game, as is an aggressive skill of taking immediate advantage and gaining direct points. Since FIVB modified the rules to Rally point system is 1999, whether the game is won or not has almost depended on how many points the team can get when serving. Therefore, the aggression and precision of service appear more important than before. This study, based on mechanics, tries to make a quantitative analysis of the elements that affect jump service as a proof of investigation and evaluation for coaches' reference on future training and instruction. This study takes a male volleyball player Yeou-yu Chen of National Taiwan Normal University, as an subject by filing and analyzing the film of his jump service movement with a Panasonic AG-450 high-speed video camera at the speed of 60 fields per second. The results digitalized by Peak performance System are listed as follows 1. During the approach; the distance of approach is 2.98m. The three step spans are distributed as the first step shorter than the second, and the second shorter than the third; that is, 0.54m, 0.97m, 1.47m. The last approach velocity is 3.88m/sec. The angle between lower limbs and the court at touchdown is 68.71 degrees, which advantages to accelerate during the approach. 2. During the take-off when the player crouches, the angle of his knee joints in 113.89 degrees, the angle of take-off is 62.71 degrees. The resultant velocity of the subject's scenter of gravity at take-off is 3.96m/sec. The horizontal distance from the take-off point to the end line of the court is 0.21m. 3. In the air; the horizontal displacement of the subject center of graveity is 0.74m; the vertical displacement of the subject's center of gravity is 0.78m; the altitude of the ball hitting point is 3.03m. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。