Perfil da análise reológica do sangue periférico humano em diferentes modelos e modalidades esportivas

Abstract

The regular practice of dynamic physical exercises contributes to a better endurance performance and increased aerobic power, in addition to triggering hematological changes that result in changes in the blood viscosity rate of athletes. Therefore, this study aimed to evaluate the rheological aspects of human peripheral blood before and after the practice of physical exercise, in different sports and between male and female athletes. For this, whole blood samples were collected from men and women before and after the practice of athletics and swimming. Subsequently, these samples were analyzed using the Compact Modular Rheometer equipment (MCR 102, Anton Paar Germany GmbH, Ostifildern, Germany) based on the parameters of blood viscosity curve and shear rate. Statistical analysis was performed using Analysis of Variance (ANOVA), followed by the Bonferroni multiple comparison test. The results indicate an increase in blood viscosity and a decrease in the shear rate in all groups analyzed when compared to the control group. Athletes, even before physical stress, had a higher blood viscosity than non-athletes. There are no differences between the two sports and between men and women. Despite the limitation of the sample size of this study, these results reinforce the importance of rheological evaluation as a means to promote new strategies and planning of sports practice aimed at increasing physical conditioning and resourcefulness of athletes in the sport of choice.