Dyspnea is defined by a subjective sensation of respiratory discomfort, the intensity of which varies according to the terrain, the anamnesis and the cause. Resuscitation is associated with many causes of dyspnea, including initial distress, mechanical ventilation, or after-effects following the pathology and its management.

Respiratory distress is the most severe form of impaired lung function. It is the first cause of hospitalization in intensive care. This distress, indicative of the failure of the respiratory system, is always severe and potentially fatal. It therefore constitutes an absolute therapeutic emergency. Dyspnea is often the revealing symptom of the condition and the urgency surrounding its management is an additional factor of concern for the patient. As a result, dyspnea is a pejorative element associated with severity or even death.

In patients surviving the initial condition, dyspnea persists and can be found months or even years later, despite the initial rehabilitation. It is strongly associated with anxiety or even the fear of dying and contributes to the occurrence of post-traumatic stress syndromes. This persistent sensation of respiratory discomfort, limiting the patient's autonomy in his activities of daily living, seems to be able to reduce his quality of life. In addition, the perpetuation of this dyspnea could favor a spiral of deconditioning causing a progressive deterioration of the cardio-respiratory system justifying new hospitalizations.

In patients with chronic respiratory failure, exercise rehabilitation supervised by hysiotherapists allows, in addition to improving autonomy, a significant reduction in dyspnoea, thus increasing the quality of life of these patients.

The main objective of this study is to evaluate the effect at 2 years of 3 modes of management of dyspnea: exercise rehabilitation, standard physiotherapy and "usual care" on post-resuscitation dyspnea in patients with presented with severe COVID-19.

Inclusion Criteria:

Patients in the RECOVER study (NCTT04569266):

• Patient ≥ 18 years old
• Patient meeting the inclusion criteria for this study (see appendix 1)
• Patient more than 2 years from their release from intensive care
• French-speaking patient
• Patient not objecting to their participation in this research

Usual care patients

• Patient ≥ 18 years old
• Patient having presented a respiratory infection by SARS-Cov-2 confirmed biologically in the laboratory by PCR or any other commercial or public health test or diagnosed by CT scan
• Patient who was under invasive mechanical ventilation during a stay in intensive care in the center of Versailles for more than 48 consecutive hours following infection by SARS-Cov-2 between 01/03/2020 and 26/01/2022
• Patient more than 2 years from their release from intensive care
• French-speaking patient
• Patient not objecting to their participation in this research

Exclusion Criteria:

• Patient under guardianship or curatorship
• Patient deprived of liberty
• Patient under legal protection

Patient who was under invasive mechanical ventilation during a stay in intensive care in the center of Versailles for more than 48 consecutive hours following infection by SARS-Cov-2 between 01/03/2020 and 26/01/2022, more than 2 years from their release from intensive care