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Sudden cardiac death (SCD) associated with athletic activity is a rare but devastating event. Victims are usually young and apparently healthy, and while many of these deaths remain unexplained, a substantial number of victims harbour an underlying and potentially detectable cardiovascular (CV) disease. 1–4 The vast majority of these events are due to malignant tachyarrhythmias, usually ventricular fibrillation (VF) or ventricular tachycardia (VT) degenerating into ventricular fibrillation (VF), occurring in individuals with arrhythmogenic disorders (eg hypertrophic cardiomyopathy, arrhythmogenic cardiomyopathy, channelopathies). Intensive exercise training and competitive sport participation is a trigger that may favour insurgence of ominous ventricular tachyarrhythmias in predisposed individuals. 5 Consequently, there is a great interest in early identification of at-risk individuals for whom appropriate treatment …