title: [Heart electric activity during ventricular repolarization of sportsmen-swimmers at physical workload].
abstract: The research of heart electrical activity of sportsmen-swimmers has been carried out using a functional test with physical activity. Standard 12-lead electrocardiograms and the cardioelectric field on the athletes' thorax surface were analyzed at rest and in every minute of a five-minute recovery period after submaximal workload. The changes of amplitude-temporal characteristics of the heart electric field on the athletes' body surface were revealed while performing physical workload. During submaximal physical workload there was no correlation between the changes: the time of achievement of maximum values of the extrema of the heart electric field and the duration of ST-T(II) and QT(II) intervals in the electrocardiogram, an amplitude of the T(II)-wave and an absolute value of the maximum positive extremum of the heart electric field.
authors: N I
authors: NI
authors: Panteleeva
authors: S V
authors: SV
authors: Strel'nikova
authors: I M
authors: IM
authors: Roshchevskaia
mesh_terms: D000293:Adolescent; D056352:Athletes; D004562:Electrocardiography; D006329:Heart Conduction System / Q000502:physiology*; D006801:Humans; D008297:Male; D010807:Physical Endurance / Q000502:physiology*; D005082:Physical Exertion / Q000502:physiology*; D013550:Swimming; D016276:Ventricular Function