title: Variation of QRS amplitude in exercise ECG as an index predicting result of physical training in patients with coronary heart disease.
mesh_terms: D000328:Adult; D004562:Electrocardiography; D005080:Exercise Test; D006339:Heart Rate; D006801:Humans; D008297:Male; D008875:Middle Aged; D009203:Myocardial Infarction / Q000503:physiopathology*; D010806:Physical Education and Training; D011379:Prognosis