| 摘要 |
<P>PROBLEM TO BE SOLVED: To solve the problem that since ordinary shoes are designed to facilitate a walk, their load during a walk is small and the shoes have a little exercise effect. <P>SOLUTION: The protrusion-like health instrument 1 reduces the contact areas of the shoes with contact the ground and increases a load on a walk and exhibits an exercise effect by being attached to the shoes' soles. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
