PROBLEM TO BE SOLVED: To prevent muscular strength decline and to improve prognosis by using an electrostimulator from an early stage in such a case that physiotherapy intervention is difficult as in the acute phase of a cardiac disease, while the physiotherapy intervention in an early stage is considered to be needed since the muscular strength decline due to lying in a bed for a long period of time largely obstructs QOL improvement after leaving a bed.SOLUTION: A stimulation current for not easily causing muscle fatigue is generated by the minimum strength required for maintaining muscular strength, it is used for a long period of time and the muscular strength decline is prevented. Also, in order to accurately give stimulation with the absolute minimum strength, the stimulation strength is controlled with muscle output as an index.COPYRIGHT: (C)2011,JPO&INPIT【課題】長期臥床による筋力低下は離床後のQOL改善の大きな妨げになるため、早期の理学療法介入が必要とされている。しかし、心疾患の急性期のように、理学療法介入が困難な場合がある。本発明はこのような場合に早期から使用し、筋力低下を防止し、予後を改善しようとするものである。【解決手段】筋疲労が発生しにくい刺激電流を、筋力維持に必要な最低限の強さで発生し、これを長期間使用して筋力低下を防止する。また、必要最低限の強さで正確に刺激するために、筋出力を指標に、刺激強度を制御する。【選択図】図1