Abstract
A study of the functional state of the cardiovascular system (CVS) on the basic parameters of cardiac hemodynamic in children of the Far North and Siberia has been carried out. The received data reflect the variety of ways of CVS development in children of different ethnic groups: Nenets, Buryats and Slavs. Bradycardia; reduced resistance of small vessels; implementation of the heart pump function at a high level were typical for children of indigenous people of the North and Siberia (Nenets and Buryats). Cardiac hemodynamic indicators have shown a substantial tension of compensatory remedial reserves, manifested in tachycardia, slow recovery of CVS after physical activity in urban Slavic children. CVS functionality in Slavic people living in the rural areas has been reduced by fall of stroke and minute volume. Reaction assessment of CVS to stress test has shown that recovery opportunities in Nenets children were higher, than in Slavic children. Correlation relationship has been revealed between anthropometrical measures and haemodynamics indicators in rural children. The imbalance between mentioned indicators has been observed in the group of urban children who are exposed to a constant inhalant harmful interference.
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