According to sample size calculation 26 diagnosed primary ciliary dyskinesia patients and 26 healthy individuals will be included. Respiratory muscle strength, anaerobic and aerobic exercise capacity, physical activity, pulmonary functions, peripheral muscle strength, cough strength, respiratory muscle endurance, activity dyspnea perception, quality of life and depression will be evaluated. Primary outcome measurements are respiratory muscle strength, exercise capacity, physical activity; secondary outcomes are pulmonary functions, peripheral muscle strength, cough strength, respiratory muscle endurance, activity dyspnea perception, quality of life and depression.