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Forest plot of comparison of LVEF and RVEF between athletes with COVID-19 and controls. No significant difference was identified in LVEF (MD = − 0.74%, 95% CI − 2.41 to − 0.93, p = 0.39) and RVEF (MD = − 1.88%, 95% CI − 5.21 to 1.46, p = 0.27). CI confidence interval; COVID-19 coronavirus disease-2019, LVEF left ventricular ejection fraction; MD mean difference; RVEF right ventricular ejection fraction
