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題 名 | 鞍馬單手支撐仰轉360°動作之技術分析:以蕭才智選手為例=An Analysis of Kehr with 1/1 Turn on 1 Pommel: The Case of Tsai-Chih Hsiao |
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作 者 | 陳光輝; 何維華; | 書刊名 | 大專體育學刊 |
卷 期 | 8:1 民95.03 |
頁 次 | 頁201-212 |
分類號 | 528.935 |
關鍵詞 | 競技體操; 鞍馬; 單手支撐仰轉360°; 動作; Artistic gymnastics; Pommel horse; Kehr with 1/1 turn on 1 pommel; |
語 文 | 中文(Chinese) |
英文摘要 | This study analyzed kehr with 1/1 turn on 1 pommel. The data was collected by a JVC-9800 digital video camera (60 Hz). The kinematics analyses were made by the Ariel Performance Analysis System. Moreover, the individual human body segment parameters were established by the MRI method. The subject had done his best performance during the experiment and set up 7 specific positions for analysis. The results were as follows. First, when the subject used one arm to support his body weight and turns 360° from the 4th position, the minimum shoulder angle was critical. This would improve the circle speed and body displacement for more control. Second, the successful movement indicated a relationship between the shoulder's angle and the angular velocity. The subject showed that maintaining the minimum shoulder's angle decreased the angular velocity from the 4th position to the end. Third, the failed movement had increased the vertical velocity and the combination velocity during the one-arm support phase, due to sudden decrease of the height of the lower segment and the center of mass. Fourth, from 1st posture to 2nd posture and from 5th posture to 6th posture, the subject reduced the shoulder joint angle and the hip joint angle to make the performance smoothly and successfully. This technique would reduce the rotation radius and decrease the inertia value. |
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