Effects of Position of Center of Gravity on Impact Position of Bat in Baseball Batting

Abstract

It's conceivable that Baseball batting is affected by position of center of gravity (C.G) of bat. And there is a possibility that it is related to the impact position of bat. In present study, batting experiments were carried out by the bat to differ the position of C.G, and the impact position was measured by the three-dimensional direct liner transformation (DLT) method. And it was discussed about effects of position of C.G on impact position in baseball batting. As a result, it was indicated the relationship that the impact position is also near bat head when the bat that the position of C.G is near bat head is used in several subjects. Therefore, the impact position was proved to have possibilities to be affected by the position of C.G. Also, the difference of the position of C.G wasn't the thing which greatly influenced the distance from the impact position in the impact to the major axis of bat. But it was confirmed in several subjects that the swing angle in the impact changed by the kind of bat, and it was recognized that the position of C.G of bat might influence it in the timing of the ball impact.