Evaluation of Electrostimulation Program During Dialysis Sessions in Chronic Renal Failure Patients

Sport improves quality of life and health, decreasing cardiovascular risks and increasing effort tolerance. Chronic renal failure (CRF) induces many clinical and biological complications leading to less effort tolerance (strength and endurance). Renal failure patients got also many cardiovascular risks : sedentarily lifestyle, hypertension (HTA), diabetes, neuropathies, bone disorders, depression and sedentarity due to dialysis sessions. Moreover, dialysis sessions three times a week induce the spiral of deconditioning. In order to counteract this, sport should be encourage in this specific hemodialysis population. The aim of this study is to evaluate electrostimulation program during dialysis sessions for 3 months. Evaluation will be done using the Test of 6-minute walk (6MWT). Secondary aims will be evaluated: * Muscular strength and quadriceps diameter * Equilibrium * Quality of life. * Strength developed during maximal exercise test in a subgroup (patient undergoing dialysis in Rennes center, about 40% of the total population) * Nutritional intakes (quantitative and qualitative evaluation)