Efeitos agudos da cajuína em marcadores biológicos, perceptivos e no desempenho de corredores submetidos a um trial simulado: um estudo randomizado, cruzado e duplo cego controlado por placebo.

Abstract

The use of nutritional ergogenic resources in sport is already well established in practice; however, recent years have been marked by the discovery of fruit juices that perform ergogenic activity similar to sports supplements. Several of these juices were shown to be able to alter perceptive variables, improve the immune system, and minimize oxidative stress induced by exercise. Cajuína is a processed cashew juice that has a good content of vitamin C, carotenoids, phenolic compounds and carbohydrates i n its composition. To date, no study has explored the effects of cajuína in humans and, mainly, subjected to physical exercise. Therefore, the present study aimed to investigate whether the cajuína would present effects on biological, perceptive markers, a nd of the performance in runners submitted to a simulated time trial of 10km (Tt10km). For this, an experimental, randomized, crossed and double blind study was conducted with nine recreational runners. The athletes participated in three interventions: the first consisted in the realization of anthropomet ric collections and explanation of the procedures; th e second and third intervention the subjects were submitted to two similar experimental conditions, which ingested 550ml of cajuína or p lacebo two hours before of the Tt10km. The parameters evaluated pre supplementation and after exercise (time trial 10km) were thiobarbituric acid reactive substances TBARS, albumin and uric acid (oxidative stress); eosinophils, neutrophils, lymphocytes, monocytes, plat elets and total leukocytes (immunological). The data collected before and after exercise were mood BRUMS, motivation MTV and mental fatigue MF. During the running test until exhaustion, we evaluated the Rating of perceived exertion RPE, feeling sca le FS, felt arousal scale FAS The results did not find any significant change to the time of the Tt10km (F 1,8 =4.203, p=0.074, η 2 = 0.344). For the perceptive variables collected before, during and after exercise, there was also no difference between the treatments fo r all of the analyses performed (p > 0.05), however, RPE and FS increased and decreased (p < 0.05), respectively, along the course. No immunosuppressive and antioxidant markers changes were found between pre and post exercise co nditions and between treatments (p > 0.05), with the exception of albumin which increased after exercise (p = 0.014) 0.014). In summary, it is concluded that the Cajuína does not seem to have an acute effect on markers biological, and perceptive but it seems to have a small effect on the performance of runners submitted to a Tt10km