| 摘要 |
PROBLEM TO BE SOLVED: To provide a training apparatus for practice swing, allowing a user to master a strong and stable form without a shake for swinging out by rotation of the body at the minimum distance and attaining a long carry of a ball by a series of swinging operations from a small orbit to a large orbit to swing the bat in an elliptical orbit. SOLUTION: In this training apparatus for practice swing, a member is provided at the base end part and the tip part of a shaft, and a grip is provided to move along the axial direction. The grip is moved from the tip part to the base end part by a series of operations to vary the fulcrum, thereby making a change from a small orbit to a large orbit. COPYRIGHT: (C)2006,JPO&NCIPI
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