| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a training tool that enables performance of effective training.SOLUTION: A training tool 11 is wholly formed in a shape long in one direction. Footrest parts 131 are formed at both ends of the training tool 11, respectively, and a part between both longitudinal ends of a bottom surface 141 is formed in a curved shape, the central part of which bulges.</p> |
