Inclusion Criteria:  Being 18 years or older Having been diagnosed with knee OA by an orthopedic specialist and having a knee prosthesis applied.  Exclusion Criteria:  Those who do not understand verbal and written information in Turkish Patients who underwent complex surgery requiring bone grafting Those with orthopedic or neurological disease causing gait disturbance Those with pain of 5 or more on the numerical pain scale Those with a history of Myocardial Infarction Those who have undergone surgery in the last 6 months Those with concomitant heart failure Those with unstable angina Those with uncontrolled hypertension Those with severe COPD, Asthma and Interstitial Lung Disease