Fatigue and Inspiratory Muscles Training in Patients With Multiple Sclerosis

Inclusion Criteria: * Patient with remitting or progressive multiple sclerosis defined by McDonald criteria revised in 2005, with an EDSS between 6 and 7,5 * Aged between 18 and 65 years * Patients able to maintain the Powerbreathe * Not to have had a flare-up since at least 6 weeks * Patients at least 4 weeks since a corticoid bolus * Patients at least 6 weeks since a botulinum toxin injection * Patients at least 4 weeks since a pulmonary infection * Questionnaire EMIF-SEP \>= 55 * Patients given their informed consent * Patients who benefit or are affiliated to a social security regimen Exclusion Criteria: * Patients with neurologic antecedents other that multiple sclerosis * Patients with respiratory disorders other than those induced by multiple sclerosis * Patients with orthopedic, cardiac, and rheumatologic invalidating antecedents * Patients with comprehension or cognitive disorders impeding the realization of rehabilitation * Pregnant women * Patients under legal guardianship, or safeguard of justice * Patients participating or planning participate within the 3 months of the study to another clinical research project