Inclusion Criteria:  COVID-19 patients in the subacute period discharged Be 18 years or older Having received oxygen therapy or mechanical ventilation support in the hospital Access to online interviews and web-based exercises with a secure internet connection Having sufficient speaking and hearing skills for telerehabilitation Volunteer to participate in research  Exclusion Criteria:  Unstable clinical condition Having had cerebrovascular disease, intra-articular drug injection or surgery of the lower extremities in the last 6 months Inability to walk independently, even with an assistive device Having serious neuromuscular problems Not being cooperative enough to answer and understand questionnaires and scales