Open AccessINDICATORS OF HEART RHYTHM VARIABILITY AND AUTONOMIC REACTIVITY IN CAUCASIAN ADOLESCENTS BORN IN RUSS. NORTHEAST
Author(s) -
А. Н. Лоскутова
Publication year - 2018
Publication title -
zdorovʹe naseleniâ i sreda obitaniâ
Language(s) - English
Resource type - Journals
eISSN - 2619-0788
pISSN - 2219-5238
DOI - 10.35627/2219-5238/2018-306-9-28-32
Subject(s) - heart rate variability , percentile , rhythm , reactivity (psychology) , balance (ability) , heart rate , orthostatic vital signs , autonomic function , medicine , heart rhythm , autonomic nervous system , psychology , cardiology , developmental psychology , audiology , pediatrics , physical therapy , blood pressure , statistics , alternative medicine , mathematics , pathology
In the research, 13-17 year old adolescents born in Magadan Region underwent an active orthostatic test(AOT) to study changes of their heart rate variability (HRV) and autonomic reactivity (AR). Optimalvalues of HRV that corresponded to the range of 25th and 75th percentile were found to be significantlygreater in vagotonia subjects than in normotonia ones and moreover as compared to sympathotoniasubjects. The greatest number of reliable changes in HRV parameters was revealed in vagotoniaadolescents between the 14 and 15-year-old groups. In the age-related dynamics, these features areassociated with an increase in the influence of the autonomic regulation contour on the heart rhythm.HRV indices did not practically change under normo- and sympathotonia and no directed dynamics wereobserved. In response to AOT, only about 40 % of the examinees have an optimal level of reactivity withthe balance of the ANS links. Adolescents with other types of ANS reactivity may be at risk with a highprobability of adaptation disorders, which requires careful medical examination in their preventive care.