الفهرس 
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Abstract
Dyspnea is one of the most common symptoms after COVID-19 infection and may persist after the resolution of infection. The extent and the characteristics of the exercise capacity of those patients are still unclear. The study aimed to evaluate those patients’ functional and exercise parameter patterns. This study was conducted in Assiut University Hospital - Chest Department, pulmonary function unit, from July 2022 to January 2023. In this study, we recruited thirty-five patients complaining of dyspnea after COVID-19 infection and thirty-five age- and gender-matched healthy volunteers. Functional and exercise capacity were evaluated using the Modified Medical Research Council Dyspnea Scale (mMRC), chest CT severity score, spirometry, Six-Minute walk test, and Cardio-pulmonary exercise test. There was a statistically significant difference between post-COVID-19 patients with persistent dyspnea and the control group in days of COVID-19 symptoms with a mean of (9.26±3.31 vs. 5.49±1.73, (P<0.001), duration of hospitalization with a mean of 1.31, range of 2-6 days in dyspneic vs. 0.51 days, range of 2-4 days in control, (P<0.001), and CT severity score which was (8.26±4.77 vs. 5.4±2.89 (P= 0.003).