The main purpose of this study was to analyze the motion of a national Spinner bowling player, Yi-Qian Lin (168cm height, 64kg weight, and played for 15 years.) The whole motion process of throwing was filmed by the Panasonic video (60FPS) camera while the subject practiced. The collected data were processed using Peak Motus motion analysis system (version 6.1). The linear relationships of wrist joint horizontal speed (WJHS) and elbow joint horizontal speed (EJHS), shoulder joint horizontal speed (SJHS) and the hip joint horizontal speed (HJHS) were determined by Pearson Correlation. The significance level was set at 0.05. Significant correlation between WJHS and EJHS (p<.01), and between SJHS and HJHS (p<.01) were found during eight times of strikes. The striking power may be influenced by throwing distance and throwing position. The maxima release speed conducted by the player was 7.88m/s, the minimum is 7.44m/s, and the average was 7.57±0.15m/s. It showed that the subject performed a regular tempo motion and good coordination to complete a throw in 8 strikes. Besides, the reacting force may easily harm the player's shoulder and wrist that may result in making mistakes during throwing.
The main purpose of this study was to analyze the motion of a national Spinner bowling player, Yi-Qian Lin (168cm height, 64kg weight, and played for 15 years.) The whole motion process of throwing was filmed by the Panasonic video (60FPS) camera while the subject practiced. The collected data were processed using Peak Motus motion analysis system (version 6.1). The linear relationships of wrist joint horizontal speed (WJHS) and elbow joint horizontal speed (EJHS), shoulder joint horizontal speed (SJHS) and the hip joint horizontal speed (HJHS) were determined by Pearson Correlation. The significance level was set at 0.05. Significant correlation between WJHS and EJHS (p<.01), and between SJHS and HJHS (p<.01) were found during eight times of strikes. The striking power may be influenced by throwing distance and throwing position. The maxima release speed conducted by the player was 7.88m/s, the minimum is 7.44m/s, and the average was 7.57±0.15m/s. It showed that the subject performed a regular tempo motion and good coordination to complete a throw in 8 strikes. Besides, the reacting force may easily harm the player's shoulder and wrist that may result in making mistakes during throwing.