NPPB and myocarditis: There was no significant difference between the subjects who had participated in curricular physical activity (PA) and those who had not with regards to the diagnostic parameters (left ventricular ejection fraction (LVEF) in echocardiography, LVEF in MRI, C-reactive protein (CRP), leucocyte count, NT-proBNP, Troponin, or the numbers of participants with ECG abnormalities (ST-changes, T-inversion or AV-Block) at onset of myocarditis.