Key result
Higher adolescent sympathetic activity linked to shorter cardiac cycles, lower pulse flow, and increased cerebral tone.
Cross-Sectional
In 13-year-old adolescents, the type of autonomic nervous regulation significantly influences resting cardiovascular and cerebral hemodynamics, though it does not appear to affect adaptation to physical or mental stress.
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Autonomic profiles in adolescents warrant no practice change yet; leaves open whether modulation improves long-term adaptation in sympathetic-dominant youth.
The features of the functional state of cardiovascular system in 13-year-old children with different types of autonomic nervous regulation were studied. Children with normotonic and parasympathetic types of autonomic regulation were found to have the highest adaptation capacities. The autonomic nervous system influences the bioelectrical processes in myocardium, the duration of cardiac cycle phases, and cerebral blood flow. Schoolchildren aged 13 years with higher sympathetic activity have shorter duration of the cardiac cycle, the phase of isometric contraction, and diastole. They have a lower pulse blood flow rate and a higher tone of large and medium cerebral vessels. No relationship was revealed between the initial autonomic nervous regulation of heart rate and the type of adaptation of myocardium to physical dynamic loads, as well as the type of adaptation of cerebral circulation to mental stress.
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Шарапов et al. (2017) reported a cross-sectional. Higher sympathetic activity vs. Normotonic and parasympathetic types of autonomic regulation was evaluated on Functional state of the cardiovascular system (adaptation capacities, cardiac cycle phases, and cerebral blood flow). Higher sympathetic activity in 13-year-old adolescents was associated with shorter cardiac cycle duration, lower pulse blood flow rate, and higher tone of large and medium cerebral vessels.
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