Nível de conhecimento e estado de hidratação em atletas jiu-jitsu

Abstract

Like any physical activity, Jiu-Jitsu (JJ) promotes physiological adaptations during its practice. One of the main changes that occurred due to its practice is sweating, which, depending on the fluid intake of athletes, can cause dehydration, and this can lead to a drop in performance. In this sense, this work seeks to verify the level of knowledge and hydration status. This is a qualitative descriptive study with a cross-sectional design. The sample of this study consisted of 28 male athletes, aged 18 to 50 years, all volunteers. The variables of interest of this study and their respective instruments were as follows: body mass, urine samples before and after the training session, fluid intake during the training session, duration of the session, weight measurement by the Digital Glass 10 – G-tech scale, urine staining was determined by the Armstrong et al scale (1994), the EG measured through reagent tapes for Bicolor/Bioeasy uroanalyses®, a closed questionnaire was used to verify the athletes' knowledge about the importance of hydration. The results of this questionnaire were expressed in percentage terms (%), the variables of hydration status were expressed as mean and standard error and we applied the Shapiro-Wilk test, aiming to determine the degree of normality of the sample residues, a paired t-test was used to verify the differences between body mass means, urine color and urinary specific severity, pre and post-training. In cases of distribution not reaching the normality assumptions, the Wilcoxon nonparametric test was used, in any case, the level of significance adopted was P < 0.05. We found that 50% of the interviewees usually sometimes hydrate during training, 55.56% during the competition, 53.33% answered that they are hydrated during training while 45.45% of the evaluated respondents answered that they are hydrated during the competition. 64.29% of the interviewees said they were concerned about what they use to hydrate, of the liquids used in water, they had a 41.67% index during the time, while the carboidrated drink presented an index of 43% after a training session or competition. 86% of the athletes stated that they should hydrate before the feeling of thirst, and when asked what type of solution they used to hydrate 60% answered that water, 18% natural juices and 13% beer, 44% answered that they should drink 1/4 liter for every 1/4 of an hour, and 33% did not know how this hydration should be done. 75% responded that they hydrate with modernly chilled liquids, 58% answered that they had already had guidance. The mean pre-fight MC was 82.7 ± 2.8, while MC after 82.6 ± 2.8, the delta % of the MC resulted in a negative mean of -0.14 ± 0.27, the mean of pre-EG was 1016.50 ± 2.15, while eG after 1017.50 ± 2.16, staining indexes showed that the athletes had the darkest urine at the end of training. We can conclude the athletes need more guidance and awareness about the appropriate benefits of hydration, whether with water or carboidrated drink and creation of hydration habits.