Dr. Biol., Professor  I.N. Medvedev¹
PhD, Associate Professor E.S. Kachenkova^2
1Russian State Social University, Moscow
²Institute of Natural Sciences and Sports Technologies (Moscow City University), Moscow

Objective of the study was to assess the hemodynamic status and left ventricle function in athletes trained on a regular basis.
Methods and structure of the study. Subject to the study were 22 male athletes (12 first-rank athletes and 10 Candidate Masters of Sport of Russia) aged 18-23 years. All the track-and-field athletes taken under observation were trained on a daily basis. The subjects’ total years in track-and-field athletics equaled 4. The Control Group was made of 32 apparently healthy volunteer university students aged 18-23 years, who were subjected to physical loads at the academic physical education classes only.
Results and Conclusions. It is believed that the high myocardial relaxation velocity is common to regularly trained individuals. The weight of evidence suggests that the maximum rate of the left ventricular relaxation in the posterior wall, as a value that indirectly characterizes the time of development of this process during the diastole. Regular physical loads affect the hemodynamic status and heart contractile function of track-and-field athletes. Long-term track-and-field sports training is accompanied by the growth of the left ventricular mass with the absence of its dilation and preservation of the central hemodynamics and cardiac functionality. Under the influence of the long-term track-and-field sports training, there is a tendency to a functionally advantageous increase in the maximum velocity of relaxation of the left ventricular posterior wall.

Keywords: track and field athletics, myocardium, left ventricle, heart, hemodynamics, physical loads.

References

1. Dembo A.G., Zemcovskij E.V. Sportivnaya kardiologiya [Sports cardiology].  Leningrad: Medicina, 1989.  364 p.
2. Zavalishina S.Yu., Mahov A.S. Fiziologicheski opravdannyj rezul'tat primeneniya staticheskih uprazhnenij pridetskom cerebral'nom paraliche [Physiologically justified result of use of static exercises for cerebral palsy  diagnosed patients]. Teoriya i praktika fiz. kultury. 2019. No. 8. pp. 41.
3. Kachenkova E.S., Kul'kova I.V., Zavalishina S.Yu., Tkacheva E.S. Fizkul'turno-ozdorovitel'naya trenirovka muzhchin 50-60 let kak sredstvo profilaktiki zabolevanij serdechno-sosudistoj sistemy [Health-improving training of 50-60 year-old males in prevention of cardiovascular diseases]. Teoriya i praktika fiz. kultury. 2020. No. 9. pp.62-64.
4. Hitrov N.K., Paukov V.S. Adaptaciyaserdca k gipoksii [Heart adaptation to hypoxia]. Moskva: Medicina, 1991. 235 p.
5. Dirx A., Knuttgen H. G., Titter K. The Olympic Book of Sports Medicine. Wiley, 1991.  692 p.
6. Mal G.S., Zavalishina S.Yu., Makurina O.N., Zaitsev V.V., Glagoleva T.I.  Functional Features of Vascular Endothelium with Developing Arterial Hypertension. Prensa Med Argent. 2019. Vol. 105(1): 1000331.
7. Vorobyeva N.V., Zavalishina S.Yu., Mal G.S., Grishan M.A., Lazurina L.P., Fayzullina I.I. Physiological Features of Platelets in Aging Outbred Rats. Indian Journal of Public Health Research & Development. 2019.  Vol. 10, No. 8. pp.1925-1929.
8. Zavalishina S.Yu., Karpov V.Yu., Eremin M.V., Pryanikova N.G., Tatarova S., Kozjakov R.V.  The functional state of the body of older men experiencing regular recreational stress. International Journal of Pharmaceutical Research.  2020. Vol. 13, № 1. pp. 292-298.