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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. 2018; 64(6): 55-62


CHARACTERISTICS OF FUNCTIONAL STATES OF THE ORGANISM’S REGULATORY SYSTEMS IN MIDDLEDISTANCE RUNNERS DURING LONG-TIME ADAPTATION TO CONDITIONS OF MID-RANGE ALTITUDE

V.V. Sosnovskyi, V.A. Pastukhova, V.N. Ilyin

    National University of Physical Education and Sport of Ukraine, Kyiv, Ukraine
DOI: https://doi.org/10.15407/fz64.06.055

Abstract

The peculiarities of organism’s regulatory system in 12 track-and-field athletes, who specialized in middle-distance running (qualification MC and MCMK mid-age 24,5±3,06 years of age) were searched during their training in midrange altitude at 2100 m height. We studied statistic, variation and spectral characteristics of heart rhythm variability at 2-3 and 11-12 days of staying in mountains. On the base of heart rhythm variability, peculiarities analysis all the examined athletes at preliminary adaptation period to midrange altitude are divided into two groups. The increased tensity of the athletes regulatory processes and prevalence of sympathic influence was marked in athletes of the first group (41,7 %). The second group of athletes (58,3 %) demonstrated the balance of sympathic and parasympathic influence and moderate tensity of regulatory systems of the organism. The relationship between individual characteristics of heart rate variability and the nature of adaptation to the conditions of middle mountains was revealed, and factors determining the functional state of the body’s regulatory systems were identified. It was demonstrated that the effectiveness of mountain training was higher in the second group of athletes. At the same time the 12 day staying in mid-range altitude conditions was not sufficient for the full adaptation to chronic hypoxia.

Keywords: hypoxia; mid-range altitude; adaptation; heart rhythm variability; middle distance runners

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