By the fact that it changes the direction of the foot, the motion auxiliary equipment which can change the ratio of the load which operates the foot and the load which operates the gluteal area largely is offered. It provides with guide rail section the both foot support stand as the guide section where restrains the portable route of 2 which places the left and right both foot of user M respectively and the aforementioned each foot support stand 2 respectively 17 in basic stand 10, the aforementioned guide rail section 17, as the aforementioned foot support stand 2 is made movement unrestricted in the respective abbreviation front and back direction, the axis of abbreviation front and back direction turns foot support stand 2 attendant upon the movement which parallels to the portable route of foot support stand 2, or the axis of abbreviation left and right direction turns and or turns around the axis of abbreviation top and bottom direction.足の向きを変化させることで、足に作用する負荷及び臀部に作用する負荷の割合を大きく変化させることができる運動補助装置を提供する。使用者Mの左右両方の足をそれぞれ載せる両方の足支持台2と、前記各足支持台2の移動経路をそれぞれ拘束する案内部としてのガイドレール部17とを基台10に設け、前記ガイドレール部17は、前記足支持台2をそれぞれ略前後方向に移動自在とすると共に、足支持台2の移動経路に沿った移動に伴って、足支持台2を略前後方向の軸回り又は略左右方向の軸回り又は略上下方向の軸回りに回転させる。
