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ISSN 2522-9028 (Print)
ISSN 2522-9036 (Online)
DOI: https://doi.org/10.15407/fz

Fiziologichnyi Zhurnal

is a scientific journal issued by the

Bogomoletz Institute of Physiology
National Academy of Sciences of Ukraine

Editor-in-chief: V.F. Sagach

The journal was founded in 1955 as
1955 – 1977 "Fiziolohichnyi zhurnal" (ISSN 0015 – 3311)
1978 – 1993 "Fiziologicheskii zhurnal" (ISSN 0201 – 8489)
1994 – 2016 "Fiziolohichnyi zhurnal" (ISSN 0201 – 8489)
2017 – "Fiziolohichnyi zhurnal" (ISSN 2522-9028)

Fiziol. Zh. 2019; 65(5): 11-19


STATUS OF THE AUTONOMIC NERVOUS SYSTEM AND CENTRAL HEMODYNAMICS IN THE PERSONS WITH DIFFERENT FUNCTIONAL MOBILITY OF NERVOUS PROCESSES UNDER POSTURAL LOADS

L.I. Yukhymenko1, 2, M.Y. Makarchuk2

  1. Cherkasy B. Khmelnytsky National University,Ukraine
  2. Kyiv Taras Shevchenko National University, Ukraine
DOI: https://doi.org/10.15407/fz65.05.011

Abstract

The variants of compensatory-adaptive reactions of central hemodynamics and the autonomic nervous system (ANS) of people under the conditions of postural stress were determined depending on the level of functional mobility of the nervous processes (FMNP).During an orthostatic load, the reactions of individuals with a high level of FMNP were characterized by the predominance of extracardiacregulation mechanisms and with a low level - intracardial. The antiorthostatic load caused activation of vascular and cardiac, as well as extracardiac mechanisms of ANS regulation. Under these conditions, a more expressive dynamic of heart rate variability (HR) in the range of a high and low frequency waves (28–35%) was revealed. At the same time, the decrease of waves of very low HR frequency did not exceed 5–7%.In individuals with a high level of FMNP, the functioning of the cardiovascular system was characterized by a higher degree of tension of regulatory mechanisms and a wider range of compensatory responses. Persons with a low level of FMNP were distinguished by a low degree of tension in the regulatory mechanisms, which was accompanied by a lower efficiency of adaptation reactions in accordance with low aerobic capabilities of the myocardium. The studied typological variants of compensatory reactions can be useful as a prognostic criteria in conducting preventive medical examinations as well as in the field of vocational guidance and selection.

Keywords: functional mobility of nerve processes; postural loads; adaptive reactions;central hemodynamics; autonomic nervous system.

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