Abbreviations
CAD, coronary artery disease; AMI, acute myocardial infarction; LVEF, left ventricle ejection fraction; STE, speckle tracking echocardiography; ANS, autonomic nervous system; CPX, cardiopulmonary exercising testing; PSAX, parasternal short axis; APLAX, apical longitudinal view/3 chamber; A4C, apical four-chamber view; A2C, apical two-chambers view; GLS, global longitudinal strain; GLSR, global longitudinal strain rate; GCS, global circumferential strain; GCSR, global circumferential strain rate; GRS, global radial strain; GRSR, global radial strain rate.