PROBLEM TO BE SOLVED: To provide a waist part exercise machine by which a user can easily impart a traction movement and a twisting exercise to a waist part at home or the like.SOLUTION: A waist part exercise machine 1 includes a lower extremity placing part 5 where the lower extremity of a user U in a supine posture is hung and the popliteal fossa of the lower extremity is placed, and a drive device 6 for reciprocating the lower extremity placing part 5, and is configured so that the drive device 6 causes the lower extremity placing part 5 to perform at least one or more motions of reciprocatory movements in a vertical direction, a right and left direction, and a front-back direction. The drive device 6 includes a first drive mechanism 7 equipped with a first drive motor 8 and a second drive mechanism 24 equipped with a second drive motor 25. The first drive mechanism 7 causes the lower extremity placing part 5 to perform the reciprocatory movement in the vertical direction using the first drive motor 8, and the second drive mechanism 24 causes the lower extremity placing part 5 to perform the reciprocatory movement in the right and left direction, and/or in the front-back direction using the second drive motor 25.SELECTED DRAWING: Figure 1COPYRIGHT: (C)2018,JPO&INPIT【課題】使用者が自宅などで簡単に腰部への牽引動作や捻り運動などを付与できる腰部運動機を提供する。【解決手段】本発明は、仰臥姿勢とされた使用者Uの下肢が掛けられ、且つ下肢の膝窩が載置される下肢載置部5と、下肢載置部5を往復移動させる駆動装置6と、を有し、駆動装置6が、下肢載置部5に対し上下方向、左右方向、及び、前後方向の少なくとも1つ以上の往復移動の動作を行わせる構成されている腰部運動機1において、駆動装置6は、第1駆動モータ8を備えた第1駆動機構7と、第2駆動モータ25を備えた第2駆動機構24と、を有しており、第1駆動機構7は、第1駆動モータ8を用いて、下肢載置部5を上下方向に往復移動させるものであり、第2駆動機構24は、第2駆動モータ25を用いて、下肢載置部5を左右方向、及び/又は、前後方向に往復移動させるものである。【選択図】図1