2017 Volume 30 Issue 2 Pages 167-178
The purpose of this case study were to reveal the features all of the batters and the excellent batters by comparing the impact parameters of the regular and non-regular batters in college baseball. Subjects were four members (two regular batters and two non-regular batters) who belong to the college baseball team. The experiments, each player hit a hundred balls thrown by the machine. It took with two high-speed camera (300Hz) to calculate the impact parameters (swing velocity, batted ball velocity, conversion efficiency of the swing velocity and the batted ball velocity, batted ball angle), pitching course and impact position. Result, 1) Success trial was greater batted ball velocity than failure trial in the all batters. 2) Regular batters did not change the swing velocity for any course. 3) All batters hit at close to the pitcher as the inside pitch, and hit at close to the catcher as the outside pitch. 4) The regular batters had much number of success trial when they hit the ball at away from the basic position. From the above results, it is important to have the skill that fast swing for any course, further converted to faster batted ball velocity. Moreover it became the result to support the opinion of the coaching site that it is likely to be success trial to hit faster batted ball. On the other hand, it is need for active in the college baseball that not only the skill to hit at the basic position but also the skill to hit the success trial hit at away from the basic position.
