HEART RATE VARIABILITY AND EXTERNAL RESPIRATORY INDICATORS IN YOUNG SAMBISTS 14-16 YEARS OLD

The research purpose is to analyze the heart rate and external respiration parameters in boys aged 14-16 years old who practice sambo.

Methods and organization of the research: measurements of heart rate variability (HRV) were carried out on Poly-Spectrum-12, the data were analyzed using software. The following parameters were studied: mode (Mo), variation range (VR), mode amplitude (AMo) and stress index (SI). External respiration function was determined using the Spiro-Spectrum device with software from the NeuroSoft Company. Until now, there are only a few works devoted to the variability of external respiration parameters. In our study, we analyzed the following indicators: vital capacity of the lungs, respiratory and inspiratory reserve volume. The examination was carried out at the beginning (autumn) and at the end (spring) of the training macrocycle, in which 58 sambo wrestlers aged 14-16 years took part.

Research results and their discussion. It was found that by the end of the study there was a significant increase in the tension index after dosed physical activity, which indicates the involvement of the central regulatory circuit. This in turn causes tension in regulatory mechanisms. It was revealed that the vital capacity of the lungs (VC) of the examined people increased significantly by the end of the 2nd year of the study and reached a value of 6.33±0.93 liters. This indicates a high contractility of the respiratory muscles and good adaptation of the respiratory system in boys aged 14-16 years. The identified growth in the vital capacity of the lungs and tidal volume increases the reserve capabilities of the respiratory system, helps improve muscle strength, endurance, and ensure oxygen homeostasis, which can initiate an adaptive-compensatory reaction.

Conclusion. 1. By the end of the 2nd year of the study, there is a significant increase in the tension index after testing physical activity, as a result of which the influence of the central circuit in the regulation of heart rate increases. 2. The vital capacity of the lungs (VC) in the examined persons shows a significant increase by the end of the 2nd year of the study and reaches a value of 6.33±0.93 liters. This indicator characterizes good adaptation of the respiratory system among sambo wrestlers 14-16 years old. We can also note the high contractility of the respiratory muscles.

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