Heart rate variability parameters differ significantly based on baseline vegetative regulation type, highlighting the methodological necessity to stratify populations by autonomic tone rather than using overall averages.
390 senior schoolboys born in the Magadan region in the 1st-3rd generation aged 15-16 y. o. have been examined at rest to study 16 parameters of their heart rate variability. Based on the values of the index of tension (the stress index SI), the variation swing (MxDMn) and the spectrum total power (TP), the examined subjects were divided into three groups with prevalence of vagal, sympathetic or normotonic reactions of their vegetative nervous system. It has been found that the ranges of variability of the heart rate mathematical indices differed significantly depending on activity of the sympathetic or parasympathetic components of the nervous system, what conditioned methodically compulsory differentiation of the examinees according to the types of their vegetative regulation.
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Maximov et al. (2013) studied this question.
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