| Budget Amount *help |
¥2,100,000 (Direct Cost: ¥2,100,000)
Fiscal Year 1999: ¥400,000 (Direct Cost: ¥400,000)
Fiscal Year 1998: ¥1,700,000 (Direct Cost: ¥1,700,000)
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| Research Abstract |
In main study of this project we examined batters with 'finger grip' (a normal grip) and batters with 'palm grip' (grasping a knob of a bat into batter's palm) to know the following two things.
1) the distance between the hook of hamate bone of the batter and the grasped bat
2) the pressure applied to the surface of his palm, under which the hook of hamate is located, when the batter hits a ball, As a result we have seen that,
1) employing 'palm grip', the distance between the hook and the grasped bat is 10mm. which is about half that of 'finger grip',
2) employing 'palm grip', the pressure applied to the surface of his palm in the instance of hitting a ball is about double of that with 'finger grip', and
3) in the case of foul tip with 'palm grip', the pressure applied to the palm is especially higher.
In additional the motion equation concerning the movement of a bat was solved to calculate the power added to the bat by both hands from the data of a high-speed video shooting. So Cuban and Japanese batter's batting data were calculated in this expression. In addition, the batting skill of both was compared based on the calculated physical value, and other indexes that were calculated for the sake of comparison. As a result, it was clarified that in the batting skill of each batter there were some differences to speak quantitatively.
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