ISSN 2415-3060 (print), ISSN 2522-4972 (online)
  • 33 of 42
JMBS 2020, 5(2): 229–234
Physical training and Sport. Medical and biological aspects of training athletes

Peculiarities of Heart Rate Variability in Professional Wrestlers with Different Dominance of the Cerebral Hemispheres

Korobeinikov G. V. 1, Korobeynikova L. G. 1, Vorontsov A. V. 1, Korobeinikova I. G. 1, Kirichenko V. M. 2

The purpose of the work was to study the variability of heart rhythm in professional wrestlers with different brain hemisphere dominance. Material and methods. Assessment of heart rhythm variability was performed using the system of information diagnostics of the cardiovascular system "Fazagraf" (Ukraine). The system allows recording ECG parameters, statistical and spectral analysis of heart rate variability. Functional hemispheric asymmetry of the brain was studied by test «Color & Word Test». According to the results of testing, semi-circular dominance was determined. Statistical analysis was performed using the software package «Statistica 7.0». Nonparametric statistics methods were used. The criterion for the significant Wilcoxon rank sums was used to assess the significance of the differences. We surveyed twenty professional wrestlers, members of the Kazakhstan national team in Greco-Roman wrestling at the age of 22-32 years. All athletes signed written consent to conduct the research, as recommended by ethics committees on biomedical research. Results and discussion. Research conducted on the «Color & Word Test» revealed the dominance of cerebral hemispheres in athletes. According to the results of the functional asymmetry of the brain, all fighters were divided into two typological groups: with the predominance of left-hemispheric dominance (8 people) and right-hemispheric dominance (12 people). The results established the presence of significantly lower values of SDNN and CV in fighters with right hemisphere domination compared with the group of athletes with dominance of the left hemisphere of the brain. This fact indicates that there is a more intense regulation of heart rhythm in athletes with right-handed dominance. This is also confirmed by the values of the triangular index. The SDNN and CV indexes reflect the state of overall heart rhythm variability, the total effect of the sympathetic and parasympathetic parts of the autonomic nervous system on the sinus-atrial node of the heart. Conclusion. Professional wrestlers with dominance of the right hemisphere of the brain had more intense regulation of heart rhythm compared to wrestlers with dominance of the left hemisphere of the brain. The increase in tension in the system of autonomous regulation of the heart rhythm in fighters with dominance of the right hemisphere of the brain is associated with the activation of the humoral and sympathetic regulation link. For a more efficient training process and the development of individual training programs for professional fighters, it is necessary to determine the dominance of the cerebral hemisphere.

Keywords: Greco-Roman wrestling, heart rate variability, professional wrestlers, hemisphere dominance

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