title: The QT interval during exercise in healthy children 6-14 years old.
abstract: Some children and adolescents with stress-induced syncope and a normal QT interval at rest are said to have a prolonged QT interval during exercise. Normal values for the QT interval of children during exercise, however, are lacking. Therefore, the authors determined, in 60 healthy boys aged 6-14 years, the QT interval during stepwise increase in exercise on a bicycle ergometer and constructed a graph containing, with a probability of 95%, at least 90% of normal QT intervals during exercise within its confidence limits. The QT interval as a function of heart rate during exercise can be expressed by the equation QT (s) = 0.4 - 9.18.10(-4) x heart rate (min-1) +/- 0.02.
authors.affiliation: Department of Cardiology, RWTH Aachen, Federal Republic of Germany.
authors.forename: D
authors.initials: D
authors.lastname: Bucsenez
authors.forename: G
authors.initials: G
authors.lastname: von Bernuth
mesh_terms: D000293:Adolescent; D002648:Child; D004562:Electrocardiography; D006339:Heart Rate; D006801:Humans; D008297:Male; D005082:Physical Exertion; D012016:Reference Values