Problem to be solved: to provide a height adjustment mechanism of a health promotion platform capable of adjusting the height of the trunks in a small amount, and gradually increasing the height of the foot, and for the purpose of providing pressure to the waist and massage. The legs of the chain and chain C are formed so that the legs and the chains t of the left and right pair of opening and closing structures are coupled and the chains and chains C are stretched between the right and left leg sides, and the attachment positions of the chains and chains C to the leg side can be changed. When the attachment position to the side is selected and the chains and chains C between the right and left legs are lengthened, the opening degree of the leg becomes large, the height of the table t becomes lower, and when the chain and the chain C are shortened, the degree of opening of the leg becomes smaller and the height of the table t becomes higher. Since the chain or chain C is used, it is possible to adjust a small height. Diagram【課題】踏み台の高さを小刻みに調節でき、しかも徐々に高くしたり、腰の指圧やマッサージにも兼用可能とする健康増進用台の高さ調節機構を提供する。【解決手段】左右一対の開閉構造の脚と台tとが連結され、しかも左右の脚側の間にチェーンや鎖cを張ってあり、前記チェーンや鎖cの前記脚側への取付け部位を変更可能に構成してあるので、チェーンや鎖cの前記脚側への取付け部位を選択して、左右の脚側の間のチェーンや鎖cを長くすれば、脚の開度が大きくなって、台tは低くなるし、チェーンや鎖cを短くすると、脚の開度が小さくなって、台tは高くなる。チェーンや鎖cを利用するので、小刻みな高さ調節が可能となる。【選択図】図1
