PROBLEM TO BE SOLVED: To provide an electrostimulator that contributes to setting the intensity of electric stimulation suitable for an object part, and a control device thereof.SOLUTION: A control device of an electrostimulator is used for an electrostimulator equipped with an electrode that can apply electric stimulation to a thigh which is an object part of a body. The control device includes an electric stimulation control part that gradually increases the output intensity by a speed equal to or lower than a predetermined speed so that a reduction rate of an oxygen concentration X in the thigh is equal to or higher than a predetermined reduction rate, and sets the intensity of the electric stimulation suitable for the thigh based on the oxygen concentration X when the output intensity is gradually increased by the gradually increased speed in a process for gradually increasing the output intensity which is the intensity of the electric stimulation output from the electrode to set the intensity of the electric stimulation suitable for the thigh.SELECTED DRAWING: Figure 6COPYRIGHT: (C)2017,JPO&INPIT【課題】対象部位に適した電気刺激の強度を設定することに寄与する電気刺激装置およびその制御装置を提供する。【解決手段】電気刺激装置の制御装置は、身体の対象部位である大腿に電気刺激を付与可能な電極を備える電気刺激装置に用いられる。この制御装置は、大腿に適した電気刺激の強度を設定するために電極から出力される電気刺激の強度である出力強度を漸増させる過程において、大腿における酸素濃度Xの低下率が所定の低下率以上となるように出力強度を所定の速度以下の速度により漸増させ、その漸増速度により出力強度を漸増させているときの酸素濃度Xに基づいて、大腿に適した電気刺激の強度を設定する電気刺激制御部を含む。【選択図】図6