Cardiopulmonary Rehabilitation in Long COVID-19 Patients With Persistent Breathlessness and Fatigue

Inclusion Criteria: * Age between 40 and 80 * Individuals infected by the SARS-COV2 virus, with positive PCR diagnosis * Still having breathlessness and fatigue at least 3 months after the diagnosis of COVID-19 or patients presenting an increase of 1 point (compared to before infection) on the Modified Medical Research Council scale. * Able to perform a maximal cardiopulmonary stress test and exercise training program in accordance with current guidelines on cardiopulmonary rehabilitation. * Able to read, understand and sign the information and consent form. Exclusion Criteria: * pulmonary embolism diagnosed by scintigraphy * Absolute and relative contraindication to exercise stress test and / or exercise training * Recent cardiovascular events (cardiac decompensation or angioplasty or cardiac surgery, less than 1 month; valvular disease requiring surgical correction, active myopericarditis, severe ventricular arrhythmias not stabilized under treatment). * Kidney failure requiring dialysis * heart failure (NYHA III or IV)