야구경기에서 타구된 볼의 속도에 관한 연구

초록

The purpose of this study is to analyze and compare swing distance, swing speed of better, and appropriate weight of a bat used by a baseball player. I chose five player respectively is A-Group that are sluggers and in B-Group that are control hitters, and made them swing. And their swing forms were taken a photograph by high Sensitive Video Camera, and were digitized by Peak Video Motion Analyzer. The result of this study is follows. 1. In physical characteristic, the players' physique A-Group is better than B-Group especially in height. 2. A horizontal movement distance, a vertical movement distance, and horizontality - vertically synthetic distance of bat use by A-Group's players are 1.682m, 1.832m, and 0.704m respectively. And horizontal movement distance, a vertical movement distance, and horizontality-vertically synthetic distance of bat use by B-Group's players are 1.562m, 1.819m 0.675m. These results showed that A-Group's players are longer than B-Group's players in swing distance. 3. The average of swing speed of A bat used by A-Group's is higher than B-Group's players. This fact showed that when the players of A and B Group swing the same bat, A-Group's players swing more rapidly than B-Group's players. 4. Appropriate weight of the bats used by A and B Group are 890g and 880g each. The speed of ball after impacting with a bat is fastest in case the A-Group's player used the bat that weighed 890g, and B-Group's players used the bat weighed 880g.

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