| 摘要 |
PROBLEM TO BE SOLVED: To cure so-called flat-foot by making it possible to put weight selectively on each part of the foot at the time of using this roller skate. SOLUTION: This roller skate is provided with front roller group 3 fixed to its sole or the front section of sole 2 and rear roller group 4 fixed to rear section of sole 2. This roller skate is made to put weight on each section of foot. Sole 2 is divided into solid front unit 5, flexible mid unit 6, and solid rear unit 7 and this the front unit and the rear unit have each roller unit in order to cure flat-foot, for example, by running with this roller skate on. |
