PROBLEM TO BE SOLVED: To provide a motion assisting device capable of facilitating a motion suitable for a user.SOLUTION: A motion assisting device 1 is provided with a foot resting part 20 on which a sole of a user is placed. The motion assisting device 1 is further provided with a shank contacting face 33 that is arranged via an arrangement space S for disposing a foot of the user between the foot resting part 20 and the shank contacting face 33 and that regulates a change in an angle of a shank bone of the user whose sole is placed on the foot resting part 20. The motion assisting device 1 is further provided with a lower leg muscle force measuring part 35 that is arranged at a height position same as a height of the shank contacting face 33 and that measures muscle force of a lower leg of the user.SELECTED DRAWING: Figure 1COPYRIGHT: (C)2016,JPO&INPIT【課題】使用者に適した運動を促進することができる運動補助装置を提供する。【解決手段】運動補助装置1は、使用者の足裏をのせる足置き部20を備える。また、運動補助装置1は、足置き部20との間に使用者の足を配置するための配置空間Sを介して設けられ、足置き部20に足裏をのせた使用者の脛骨の角度の変化を規制する脛当面33を備える。さらに運動補助装置1は、脛当面33と同じ高さ位置に設けられ、使用者の下肢の筋力を計測する下肢筋力計測部35を備える。【選択図】図1