Análise do comportamento da variabilidade da frequência cardíaca em nadadores em uma sessão de treinamento do período de base

Abstract

The aim of the study was identify relationship between training and heart rate variability in swimmers. Therefore the study analyzed the variability of heart rate in the training base period to determine how this parameter reflects the training in the response of the athletes. Fifteen young swimmers participated in the study. The measurement and monitoring of heart rate occurred with WCS device. Swimmers had the heart rate and heart rate variability monitored five minutes before a swimming training session and five minutes later. Thus, it was possible measure the effect of the training session of base period. For statistical treatment was used Biostat software version 5.3 with the Pearson correlation and R2, and the test t student to check the degree of correlation between the times and the intraclass correlation (ICC) to provide data reliability and test its replicability. (P = 0.05). The average pre training session of RR intervals was 639.25 ms with a standard deviation of 112.41ms. At the time after training session average of RR intervals was 526.38 ms with a standard deviation of 102.87 ms. The standard deviation of the mean of RR intervals pre training session was 72.99 ms with standard deviation of 45.58 ms. In a general analysis, results of this study showed no convergence in numerical terms, to those of other studies that assessed HRV in different age groups. When compared to professional swimmers, the sample has a lower heart rate variability in the time domain. However, the standard deviation of this study resembled the standard deviation values found in the literature, which indicates that the high average of RR intervals is related to the degree of physical conditioning and it shows good heart rate variability of the analyzed sample population.