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來源資料
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題 名 | 排球網球式飄浮發球運動學分析=Analyse Dynamics of Tennis Floating Serve in Volleyball |
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作 者 | 林志哲; | 書刊名 | 高苑學報 |
卷 期 | 13 2007.07[民96.07] |
頁 次 | 頁511-520 |
分類號 | 528.954 |
關鍵詞 | 排球; 發球; 飄浮球; Volleyball; Serve; Floating serves; |
語 文 | 中文(Chinese) |
中文摘要 | 本研究之目的在探討排球網球式發球,比較長、短飄浮發球中球體飛行軌跡及現象。以本校男子排球隊為對象,研究方法採用一架NAC HSV-500攝影機拍攝受試者發球動作及球體飛行的軌跡,利用Peak5 動作分析器,加以分析,獲得以下結果: 一、在飛行距離方面:從發球者擊球剎那到球落地為止,長飄浮球的飛行距離為18.24公尺,短飄浮球為15.23公尺,兩者相距約3公尺,飛行距離有顯著差異性。 二、在飛行時間方面:從發球者擊球剎那到球落地為止,長飄浮球為1.65秒,短飄浮球為1.37秒。 三、在飛行速度方面:長飄浮球的初速度為每秒16.55公尺,垂直方向速度為每秒15.75公尺,水平方向速度為每秒5.09公尺,而短飄浮球的初速度為每秒16.19公尺,垂直方向速度為每 15.12公尺,水平方向速度為每秒5.70公尺。 四、在飛行角度方面:長飄浮球在過了最高點後著地角度較短飄浮球小,即長飄浮球以斜體狀態下著地,短飄浮球則以幾乎垂直狀態著地。 |
英文摘要 | The purpose of this study was to investigate tennis serves, comparing the flight trajectory and phenomena of the ball between long and short floating serves. In the experiment, a NAC HSV-500 video camera was used to record the serve movements of the subjects and flight trajectory of the balls. A peak 5 movement analyzer was used to analyze the recorded results, and the findings that follow were obtained: 1. Flight distances: The flight distance of the long floating ball was 18.24 meters, counting from the moment of the stroke to the ball hitting the ground, and the flight distance of the short floating ball was 15.23 meters. There was a difference of 3 meters, showing a significant difference in distances. 2. Flight time: The flight time of the long floating ball was 1.65 seconds, counting from the moment of the stroke to the ball hitting the ground, and the flight distance of the short floating ball was 1.37 seconds. 3. Flight speed: The initial speed of the long floating ball was 16.55 meters per second, the vertical speed 15.75 meters per second, and horizontal speed 5.09 meters per second; the initial speed of the short floating ball was 16.19 meters per second, the vertical speed 15.12 meters per second, and the horizontal speed 5.70 meters per second. 4. Flight angles: A fterpassing the peak, the long floating ball hit the ground at a smaller angle that did the short floating ball. In other words, the long floating ball hit the ground at small angles, while the short floating ball hit the ground almost vertically. |
本系統中英文摘要資訊取自各篇刊載內容。