| 主权项 |
1. An exercise training device comprising:
a first support portion extending along a first plane that is substantially parallel to a surface upon which the exercise training device is supported, the first support portion defining:
a first side that is configured to support a user, the first side having a first coefficient of friction; anda second side located opposite the first side; a second support portion extending along a second plane that is substantially parallel to the first plane, the second support portion defining:
a third side that is attached to the second side of the first support portion; anda fourth side, located opposite the third side, that is in contact with the surface upon which the exercise training device is supported, the fourth side having a second coefficient of friction that is less than the first coefficient of friction; wherein, in response to a force applied by the user to the first side along a direction that is parallel to the first plane, the fourth side is configured to move with respect to the surface. |
