Electrical Muscle Stimulation and Bicycling Combined to Early Standard Rehabilitation in the ICU

Inclusion Criteria: * age over 18 yrs * expected length of stay in the ICU higher than 72 hours * motor autonomy sufficient for independent ambulation (ass assessed by patient/family/familial practitioner interview Exclusion Criteria: * Opposition expressed by the patient, his/her legal representative or a member of his/her family * Pregnant woman * Resuscitated cardiac arrest before inclusion * Patient carrying a pacemaker or an implantable defibrillator * Patient under extracorporeal membrane oxygenation * Severe acute cerebral disease requiring deep sedation * Brain death * Guillain-Barré syndrome * Myasthenia gravis * Known Dementia than can affect the main endpoint assessment * Deep venous thrombosis or pulmonary embolism treated for less than 48 hours, or floating clot in femoral, iliac of inferior vena cava veins * Unstable traumatic injuries of the spine * Severe skin disease or surgical reasons that either prevent performing electrostimulation or bicycling in the next 2 days, or prevent patient's verticalization or transfer to chair in the next 5 days * Amputation of a lower limb at the trans-metatarsal level or higher * Inclusion in another interventional study with muscle strength assessment as the primary endpoint * Moribund patient