PROBLEM TO BE SOLVED: To provide a chair that has a function of being seated on the chair and having massage of a calf, generates consciousness of taking care to a stoop for people having a tendency becoming the stoop and enables a spine to bend rearward while being seated.SOLUTION: A chair is characterized as follows: the people for using the chair are notified of the fact that this chair has spine measures and massage function of a calf, before use a backrest is made to be a height of a waist position when being seated the upper part is machined in a circular shape and the spine can be bent behind while seated the opposite edge of the foot of the seat is machined in the circular shape and thereby fatigue is reduced by rubbing the calf up and down.SELECTED DRAWING: Figure 1COPYRIGHT: (C)2017,JPO&INPIT【課題】椅子に座り脹脛をマッサージする機能と猫背になる傾向の人に猫背に注意する意識が生じ座りながら背筋を後方に反らす事が出来る椅子を提供する。【解決手段】椅子を使用する人に、この椅子は背筋対策と脹脛をマッサージ機能を持っている事を告げて使用してもらい、背もたれは座った場合、腰位迄の高さとし上部は円形状に加工して座席中背筋を後ろに反らすことが出来、座席の足の向う先の縁を円形状に加工し、脹脛を上下に擦るようにして疲れを軽減する椅子にする。【選択図】図1
