“…As COVID-19 spreads worldwide, many studies have been published, all of which report the effects of physical exercise alone on muscles and quality of life after hospital discharge [ 37 , 38 , 39 , 40 , 41 , 42 , 43 , 44 , 45 , 46 , 47 , 48 , 49 , 50 , 51 , 52 , 53 , 54 , 55 , 56 ]. However, published studies have generally reported muscle strength after rehabilitation exercises and have not looked specifically at the underlying mechanisms affecting muscle or other organs [ 37 , 38 , 39 , 40 , 41 , 42 , 43 , 44 , 45 , 46 , 47 , 48 , 49 , 50 , 51 , 52 , 53 , 54 , 55 , 56 ]. For this purpose, a review study was conducted to investigate the importance of exerkines in COVID-19 patients discharged from the hospital.…”