As an important non-drug intervention in the treatment of respiratory tract diseases, respiratory rehabilitation training is increasingly accepted in clinical practice. The purpose of pulmonary rehabilitation is not only to improve the physical and mental conditions of the patient, but also to help the patient return to the family and society more quickly.

In light of the widely documented lung injuries associated with COVID-19, concerns are raised regarding the assessment of lung injury in discharged patients. As an important non-drug intervention in the treatment of respiratory diseases, respiratory rehabilitation training is increasingly being accepted in clinical practice The purpose of pulmonary rehabilitation is not only to improve the physical and mental conditions of the patient, but also to help the patient return to the family and society more quickly.

The aim of the study; It is aimed to evaluate the efficiency of breathing exercise in individuals with COVID-19.

Inclusion Criteria:

• 18 years of age or older and who received / will receive treatment with the diagnosis of COVID 19 and completed 2 months after the diagnosis of COVID 19
• Patients who applied to the Pulmonary Diseases outpatient clinic with complaints of dyspnea
• FEV1 / FVC <80%, FVC <80%, FEV1 <80%, FEF25-75> 50% and / or Patients with respiratory distress in daily living activities

Exclusion Criteria:

• FEV 1 <50%, FEF 25-75 <50% detected oxygen saturation <85% at rest,
• moderately severe heart failure,
• has a disease that restricts its mobilization,
• psychiatric illness,
• advanced stage liver, advanced stage renal failure,
• Myocardial infarction within 4 months
• having a history of unstable angina
• active infectious disease