Evaluation on Kinematic Factors Affecting Scores of Olympic Round Game during the Follow Through in Archery

ABSTRACT C. K. HAH, and J. H. YI, Evaluation on Kinematic Factors Affect ing Scores of Olympic Round Game during the Follow Through in Archery. Korean Journal of Sport B iomechanics, Vol. 18, No. 1, pp. 227-234, 2008. The purpose of this study was to investigate kinematic factors affecting scores of Olympic Round Game during follow through which was basic and important in archery. For this study, 8 male archers(20 ±1 yrs ,77±13 kg, 178±5 cm) of K university participated in the experiment. The seven infrared cameras (Qualisys MCU-240) were used to acquire raw data, and analyzed with Matlab6.5 for variables. The results were as follows: First, angular average velocity of shoulder joint affecting scores was a statistical significance (p=.65, p<.10), and the regression equation was y = - 0.0637 x + 17.074, and determinan t coefficient R 2 = 0.874 respectively. Second, good records was acquired about 120 °/sec. of angular average velocity of shoulder joint. Third, as records was lower and lower, a peak-pulse on angular average velocity of shoulder joint was great during follow through. In conclusion, the record was greater as angular average veloci ty of shoulder joint was smaller and smaller from 110°/sec. to160°/sec. It is suggested that a lower angular average velocity of shoulder joint and no peak-pulse may obtain good scores during follow through. KEYWORD : BACK TENSION, COEFFICIENT OF VARIATION, REGRESSION AN ALYSIS, CORRELATION