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,
- Bogomoletz Institute of Physiology National Academy of Sciences of Ukraine, Kyiv, Ukraine
- International Center for Astronomical and Medical and Ecological Research of the National Academy of Sciences of Ukraine, Kyiv, Ukraine
- National University of Physical Education and Sport of Ukraine, Kyiv, Ukraine
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.
moderate variable direction acceleration; function test; heart rate; stroke volume; volumetric rate of blood ejection.
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