Home-based Respiratory Physiotherapy and Telephone-Based Psychological Support in Severe COVID-19 Patients

Inclusion Criteria: * Age between 18 and 75 years * Be discharged from hospitalization with a COVID-19 confirmed diagnosis * Be able of understanding study procedures * Be able to give informed consent * Required oxygen flow greater than 6lt/min or through a high flow device at any time during hospitalization * Have been evaluated by the rehabilitation service at least once during the hospitalization Exclusion Criteria: * Contraindications to six-minute walk test * Contraindications to spirometry * Complications during the baseline six-minute walk test * Have neurological pathology, neuropathy, limb dysfunction, or other underlying physical disability that makes physical exercise impossible * Be pregnant or breastfeeding * Do not have access to the Internet or a telephone line * Have previous lung diseases like asthma, COPD, fibrosis, or tuberculosis * Moderate or severe heart disease (Grade III or IV, New York Heart Association) * Have had another severe disease in the last six months * Severe depression or suicidal intention * Be taking any medication for depression, anxiety, or other medication prescribed by a psychiatrist prior to the onset of a COVID-19 condition * Have cognitive impairment or sensory disturbance