Physical performance monitoring and indicators of the cardiorespiratory system of young rowers

Relevance. The article presents the results of the study of physical performance and its supporting systems in children aged 11-12 years engaged in kayaking in groups of initial training. The relevance of the study is due to the limited number of scientific papers on the impact of practicing this sport on the functional state of a growing organism. The aim of the study was to assess the physical performance and indicators of the cardiorespiratory system in young athletes specializing in kayaking at the initial stage of the training cycle. Methods. At the beginning and at the end of the school year, 15 athletes aged 11-12 and 15 untrained boys were examined in kayaking classes. With the help of generally accepted research methods, physical performance, recovery processes in the Martin-Kushelevsky sample were tested, indicators of the cardiorespiratory system and vegetative status were determined and calculated. Statistical processing of the results was carried out using the computer program "STATISTICA 10". The central trends and variances of quantitative features were described using median and interquartile range. The nonparametric Mann-Whitney criterion was used to compare the indicators in two independent groups. Results. At the beginning of the study, there were no statistically significant differences in physical performance and functional parameters of the cardiorespiratory system between the groups. All respondents had a sympathetic status of the autonomic nervous system. After a year of training, young athletes had positive changes in the respiratory system and the ability of the cardiovascular system to recover. A statistically significant improvement in the results of the functional test of Martin-Kushelevsky was revealed, which showed a "satisfactory" ability of the hemodynamic system to recover and a hypotonic type of reaction. Conclusion. The dynamics of indicators in the group of young rowers reflects positive changes in the lability of the regulatory mechanisms of respiration and adaptive reactions to specialized loads, which suggests the possibility of improving physical performance.