Patent ID: 8795139

Claim:
A lower-limb off-axis training apparatus, which is mounted on the movement part of a sagittal plane exercise machine and allows the user to preform off-axis movement training during sagittal plane movements; Said lower limb off-axis training apparatus comprising a base; an off-axis resistance generating part mounted on said base; a foot container supported by said off-axis resistance generating part; Said off-axis resistance generating part comprising at least one of the following: (1) off-axis pivoting resistance generating part, which exerts pivoting resistance on said foot container about the defined PD axis; Wherein said off-axis pivoting resistance generating part comprising: a rotation disk, said rotation disk is attached on said foot container; a first spring group and a second spring group, said first spring group and second spring group are attached on each side of said rotation disk and exert adjustable resistance force on said rotation disk about the defined PD axis; a pair of cables, said pair of cables link said first spring group and second spring group to said rotation disk respectively; an initial tension adjustment means, wherein said adjustment means drives said spring group and elongates the spring length; wherein, one end of said cable is connected to the front fixed end of said spring group; the other end of said cable is connected to the fixed position on said rotation disk; the rear fixed end of said spring group is connected to said adjustment part; the initial tension force of said spring group is adjusted by pulling said rear end of said spring group through said adjustment means; (2) off-axis sliding resistance generating part, which exerts sliding resistance on said foot container along the defined ML axis; Wherein said off-axis sliding resistance generating part comprising: a front linear sliding pair and a rear linear sliding pair, each said linear sliding pair includes at least one linear sliding guide and at least one sliding block; a sliding board, said sliding board is mounted on the top of said front and rear sliding blocks; a first spring group and a second spring group, one end of said first spring group and second spring group is attached to each side of said sliding board individually and exerts adjustable resistance along the defined ML axis; a pair of mediolateral tension adjustment boards, said board is mounted on the said base and connected to the other end of said first spring group and second spring group; wherein the mounting position of said pair of boards is adjustable on said base to get asymmetrical lateral sliding force exerted on said sliding board by changing different initial length of said first spring group and second spring group.