Inclusion Criteria:  Patients with a confirmed diagnosis of Sars-Cov2 infection, regardless of the degree of severity and negative results to 2 consecutive nasopharyngeal swabs. Diagnosis of Polyneuropathy is defined clinically and/or by electromyographic examination. Older age Both sexes  Exclusion Criteria:  Presence of disabling conditions affecting the musculoskeletal system. Ischemic/hemorrhagic stroke Neurodegenerative diseases Presence of rheumatic and inflammatory diseases. Chronic diseases of the respiratory system. Hemodynamic instability Cognitive impairment (Mini-Mental State Examination <18)