O uso da frequência cardíaca de repouso obtida dentro e fora d'água para a prescrição de treinamento em hidroginástica

Abstract

Aquatic exercise session is a physical activity that has been widely practiced and, in this context, the behavior of heart rate has stood as a parameter for training prescription. The aim of this study was to assess the response of heart rate during exercise in water with respect to the prescribed training ranges from the resting heart rate obtained in and out of the water. The present study evaluated 15 women (aged 31 to 61 years), engaged in aquatic exercise sessions for at least six months, who were not receiving medication that could influence the heart rate response and that did not miss more than three consecutive lessons. Initially, rest heart rate values were collected with the volunteer sitting out of the water, and then in the standing position in the water. Moreover, heart rate was recorded continuously during the aerobics class, at every one minute and 10 seconds. Then, we individually prescribed a range of training from the resting heart rate obtained out of the water and another one from the resting heart rate obtained in the water. The data were submitted to descriptive statistics, normality tests (Shapiro-Wilk) and paired t test (SPSS version 13.0). The results showed that the heart rate training range obtained from the resting heart rate collected out of the water is more efficient, since a higher percentage of investigations remained within that range, compared with the results using the training range stipulated based upon resting heart rate obtained in the water.