Post-coronavirus Disease-2019 Fatigue

Cardiopulmonary stress test will be conducted under the guidance of sports and exercise physicians and nursing staff. Electrocardiogram, spirometry, blood pressure and gas exchange measuring will be assessed at rest. The participants will then undergo CPET according to a modified Astrand treadmill test protocol. The test will be terminated at maximal exercise or upon the appearance of limiting symptoms. Continuous electrocardiogram and repeated blood pressure measuring will be conducted at the recovery phase. Post-exercise spirometry will also be assessed.