Comportamento de variáveis fisiológicas durante a aula de hidroginástica

Abstract

The objective of this study was to analyze the behavior of physiological variables and the rating of perceived exertion during the different stages of a hydrogymnastics class. 17 university students between the ages of 20 to 27 were investigated in two distinct stages: a) incremental treadmill test (Mader protocol); and b) evaluation of the body composition and hydrogymnastics class. Based on the results of the ergospirometric test, the subjects were divided in well conditioned and very well conditioned. The obtained results in the initial and final stages of the class show that the activity is enough to promote the heating and the return to a calm state. As for the main stage of the class (aerobic), the results showed that for the conditioned group as well as for the well conditioned, the rating of perceived exertion was 11, and considering the average of the maximum heart rate (74,75% and 77,74%), the concentration of blood lactate (3,26mmol and 3,93mmol) and the caloric output (248,61kcal and 255,4kcal) those remain within their respective values recommended by the literature for aerobic exercises. In relation to the peak of oxygen consumption the same happened only to the conditioned group (53,32%), considering that the well conditioned group presented a percentile of 46,43%. The results indicate that the analyzed activity may be enough to promote the improvement of the aerobic conditioning and suggest that the oxygen consumption may not be indicated to be utilized for the prescription and the monitoring of the intensity due to the presented behavior, considering the analyzed group.