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Насосная функция сердца детей с различными типами кровообращения при функциональных нагрузках

Насосная функция сердца детей с различными типами кровообращения при функциональных нагрузках

Abstract

The authors studied the peculiarities of cardiac activity in 9-12-year-old children during orthostatic test and ergometric bicycle exercises with increasing loads. The physiological evaluation of condition of the pumping function of the heart was held on the ground of analysis of following indices: heart rate, stroke volume of blood, minute volume of blood. The studies showed that before load the least indices of the pumping function of the heart (heart rate, stroke volume of blood, minute volume) were recorded in the group of children with hypokinetic type of blood circulation. The greatest indices were recorded in the group of children with hyperkinetic type of blood circulation. The greatest stroke volume during physical exercises with increasing loads revealed itself in 11-12-year-old boys with hypokinetic and eukinetic types of blood circulation. The forming of reactions of plumping function of the heart to functional load in 9-12-year-old children is determined with initial type of blood circulation.

Авторами изучены особенности сердечной деятельности детей 9 – 12 лет во время ортостатической пробы и работы на велоэргометре повышающейся мощности. Физиологическая оценка состояния насосной функции сердца проводилась на основании анализа показателей частоты сердечных сокращений, ударного объема крови, минутного объема кровообращения. Как показали проведенные исследования, перед нагрузкой наименьшие показатели насосной функции сердца (частота сердечных сокращений, ударный объем крови и минутный объем кровообращения) были зарегистрированы в группах детей с гипокинетическим типом кровообращения, а наибольшие – в группах детей с гиперкинетическим типом, при физической нагрузке нарастающей мощности больший ударный объем крови проявляли мальчики в возрасте 11-12 лет с гипокинетическим и эукинетическим типом кровообращения. Формирование реакций насосной функции сердца у детей 9-12 лет на функциональные нагрузки определяется исходным типом кровообращения.

Keywords

ОРТОСТАТИЧЕСКАЯ ПРОБА, ВЕЛОЭРГОМЕТРИЧЕСКАЯ НАГРУЗКА, ГЕМОДИНАМИКА, НАСОСНАЯ ФУНКЦИЯ СЕРДЦА, ТИПЫ КРОВООБРАЩЕНИЯ, ФУНКЦИОНАЛЬНАЯ НАГРУЗКА

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
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