SOME PHYSIOLOGICAL FEATURES OF ELECTROCARDIOGRAM INDICATORS IN ATHLETES IN ADOLESCENCE
Interpretation of electrocardiogram in pediatric practice is a difficult task for sports doctors, as those pathological changes in electrocardiogram, which can be observed in an adult, do not always speak about cardiovascular pathology in adolescence. The article describes a clinical case involving a 12-year-old boy who is systematically involved in football. He had recorded changes at the electrocardiogram alone (incomplete blockade of the right leg of the Gissa beam and disruption of repolarization processes), but no changes were detected on the electrocardiogram with a gradually increasing cycling ergometric load. Further observations of the boy showed that after two years of systematic training, at the age of 14, there was no "bad indicator" on the electrocardiogram. The boy continues to play football. The authors conclude that sports doctors and trainers should take into account the physiological characteristics of the cardiovascular system in terms of electrocardiogram indicators, including heart rate, rhythm, direction of the electric axis of the heart, intervals. Additional cardiac examinations, such as echocardiography and daily electrocardiogram monitoring, are needed to differentiate age-related physiological changes and organic cardiovascular pathology in children who are systematically engaged in sports.