Abstract
To the Editor: Exercise training in secondary prevention of cardiac disease is an established lifestyle strategy to improve cardiovascular risk factors and morbidity in cardiac patients. However, clinical data are surprisingly scarce. Therefore, the Norwegian group has to be congratulated for collecting a very large data set in this important clinical research field.1 In their study, Rognmo et al1 investigated 4846 patients (mean 57.8 years of age, 70% males) with cardiac disease (40% angioplasty, 35% bypass surgery, 11% valve surgery, 7% myocardial infarction, and 7% systolic heart failure) referred to cardiac rehabilitation (mean of 37 sessions, 60 minutes each, primarily bicycle ergometry) and assessed severe adverse events defined as cardiac …
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