Pathophysiological Characterization of the Neuromuscular Function of a Population With Multiple Comorbidities Suffering From Chronic Renal Failure in Pre-dialysis.

The evolution of chronic kidney disease (CKD) causes a systemic upheaval on the body and a deep fatigue is very often described by patients (50-70% of the patients) even before the start of dialysis (pre-dialysis). This fatigue has many origins, and one of them probably stems from a deterioration of neuromuscular abilities. Very few studies have examined the physiological aspects of neuromuscular fatigue in pre-dialysis patients, and shedding light on potential deficits at this level would allow safe and efficient implementation of adapted physical activity programs. Our study aims to characterize the pathophysiology of neuromuscular capabilities in chronic advanced renal failure in pre-dialysis patients.

Inclusion Criteria: * Adult patients (Age\> 18 years) who have signed the informed consent form * Social security coverage * For patients in the Chronic Kidney Disease group: Glomerular filtration rate less than 60 ml/min of creatinine for more than three months Exclusion Criteria: * Dermatological conditions of the upper limbs which would contra-indicate Electromyographic electrodes being positioned * Gestating women * Patients with known neuromuscular conditions * Patients with dementia * Patients with acute heart failure * Patients with a history of surgery of the evaluated limb * Patients included in an interventional study involving administration of treatments other than routine care * For the patients in the Chronic Kidney Disease group: patients currently undergoing dialysis or in a pre-dialysis program (e.g. with a dialysis fistula already in place).