Половые аспекты реактивности проводящей системы сердца у подростков во время велоэргометрии в зависимости от типа организации электроэнцефалограммы

Abstract

The aim of the study was to evaluate the dependence of the heart conduction system on the electroencephalogram (EEG) type during a bicycle ergometry test (BET) in adolescents 15-17 years. 89 boys and girls with autonomic dysfunction syndrome (ADS) and 28 healthy adolescents 15-17 years were examined. Stages of the study included the baseline EEG and electrocardiogram (ECG), BET, ECG after BET in rest period. Тhe most pronounced shortening of the ECG-intervals PQ, QT and QTc in the rest period after BET regarding to the baseline values, shortening of the PQ interval during the rest period after BET wеre revealed in girls with ADS and paroxysmal EEG phenomena. Shortening of the PQ ECG-interval at the end of the rest period after BET regarding to the baseline values were revealed in boys with ADS and diffuse EEG-changes, desynchronous alpha-rhythm EEG. There was no shortening of the QTс ECG-interval in the first minute of the rest period after BET regarding to the baseline values in boys with ADS and paroxysmal EEG phenomena. Вut at the same time increase of the QTс interval at the end of the rest period after BET were revealed in boys of the same group. It is concluded that adolescents with ADS, diffuse EEG-changes, paroxysmal EEG phenomena have a high risk of bioelectric heart disturbances during physical activity.