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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. 2021; 67(4): 21-28


INFLUENCE OF PERIODIC MODERATE LINEAR ACCELERATIONS OF VARIABLE DIRECTION ON CENTRAL HEMODYNAMICS

O.M. Bakunovsky1,2,3, K.V. Rozova1, V.A. Pastukhova3, V.I. Portnichenko1,2, A.G. Portnichenko1,2,

  1. Bogomoletz Institute of Physiology National Academy of Sciences of Ukraine, Kyiv, Ukraine
  2. International Center for Astronomical and Medical and Ecological Research of the National Academy of Sciences of Ukraine, Kyiv, Ukraine
  3. National University of Physical Education and Sport of Ukraine, Kyiv, Ukraine
DOI: https://doi.org/10.15407/fz67.04.021

Abstract

It was examined 19 male fencers aged 18 to 24 years , who had sports experience from 8 to 14 years and high sports qualifications in the chosen sport (masters of sports and candidates for masters of sports). Subjects had no significant differences in height and body weight. Linear horizontal accelerations were created using a movable platform with a chair, which housed the athlete. Passive movement of fencers on the platform corresponded to their usual parameters of movement on the fencing track during a sports match. It has been shown that the short-term effect of horizontal moderate accelerations of the variable direction when using the functional test (FT) led to small but statistically significant changes in heart rate (HR), stroke volume (SV) and volumetric blood ejection rate (VER). In all subjects, the changes in these indicators after FT were as follows: heart rate decreased slightly, and SV and VER increased. FT revealed that in persons who are accustomed to moving with moderate horizontal linear accelerations of variable direction, the shortterm effect of this factor was accompanied by a tendency to decrease the minute volume of blood flow (MVB) due to decreased of heart rate. Increasing of SV and VER can be considered as an immediate compensatory response aimed at maintaining MVB. Thus, in athletes whose long-term sports activities are associated with the action on the body of periodic moderate horizontal linear accelerations of variable direction, no adaptation to the action of this specified factor is formed.

Keywords: moderate variable direction acceleration; function test; heart rate; stroke volume; volumetric rate of blood ejection.

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