THE DYNAMICS OF CARDIAC PUMPING PERFORMANCE DEPENDING ON RESPIRATORY CYCLES AND INCREASING LOAD

Keywords: cardiac pumping performance, cardiac output, respiratory cycle, increasing load

Abstract

Aim. The paper aims to divide athletes into groups with respect to their respiratory cycles; to consider changes in cardiac pumping performance depending on respiratory cycles and load levels. Materials and methods. The study involved male athletes divided into one of the following groups: bradycardial (n = 23), normocardial (n = 27), and tachycardial (n = 9) respiratory cycles. An ergometer with gradually increasing load was used (16 minutes; 4 minutes for each load level). Cardiac pumping performance was recorded at rest and exercise (heart rate and stroke volume). Cardiac output was calculated using the following formula: HR×VOC. Results. The highest heart rate values at baseline and up to 200 W were found in the normocardial group, and the lowest ones – in the bradycardial group. The threshold of an adequate hemodynamic response was recorded at 50 and 100 W in the bradycardial and normocardial/tachy­cardial groups, respectively. No significant differences in terms of cardiac output were observed between groups at 200 W. Conclusion. Increased cardiac output values in the normocardial group were associated with heart rate measures, while in the bradycardial group cardiac output depended on stroke volume. Therefore, it can be concluded that there are complex adaptive relationships, which explain a variety of observed responses.

Author Biographies

R. Khairullin , Volga Region State University of Physical Culture, Sports and Tourism, Kazan, Russia

Candidate of Biological Sciences, Associate Professor of the Department of Theory and Methods of Volleyball and Basketball, Volga Region State University of Physical Culture, Sports and Tourism, Kazan, Russia.

D. Yelistratov , Kazan State Agrarian University, Kazan, Russia

Candidate of Biological Sciences, Associate Professor of the Department of Physical Education, Kazan State Agrarian University, Kazan, Russia.

N. Ishmukhametova , Kazan State University of Architecture and Engineering, Kazan, Russia

Senior Lecturer, Department of Physical Education and Sport, Kazan State University of Architecture and Engineering, Kazan, Russia.

S. Ilyin , Kazan State University of Architecture and Engineering, Kazan, Russia

Senior Lecturer, Department of Physical Education and Sport, Kazan State University of Architecture and Engineering, Kazan, Russia.

D. Khairullin , Kazan (Volga region) Federal University, Kazan, Russia

Lecturer, Department of Physical Education and Sport, Kazan (Volga region) Federal University, Kazan, Russia.

References

References on translit

Published
2022-12-12
How to Cite
Khairullin, R., Yelistratov, D., Ishmukhametova, N., Ilyin, S., & Khairullin, D. (2022). THE DYNAMICS OF CARDIAC PUMPING PERFORMANCE DEPENDING ON RESPIRATORY CYCLES AND INCREASING LOAD. Human. Sport. Medicine, 22(3), 30-37. https://doi.org/10.14529/hsm220304
Section
Physiology