Efeito agudo de dois protocolos de aquecimento na temperatura corporal e no desempenho funcional de membros inferiores em praticantes recreacionais de futsal: ensaio clínico randomizado

Abstract

Indoor soccer (futsal) stands out for being a sport that requires a high level of physical effort from its practitioners, it has fans worldwide and for being a sport with a lot of physical contact, its practitioners are exposed to the high risk of injury and medical leave. Some methods are used preventibile in the occurrence of injuries, among them, body warming stands out, it consists of specific exercises in order to prepare practitioners for the other playing conditions. The present study aimed to evaluate the acute effect of two warming protocols (FIFA11 + and conventional) on body temperature and functional performance of the lower limbs of recreational indoor soccer players. It was a randomized clinical trial with 27 male practitioners with aged (22.4 years ± 3.04), body mass (72.1 kg ± 9.9), height (1.76 m ± 0.06), IMC (23.1 kg / m2 ± 2.5). After the selection, the participants were randomly allocated to groups - FIFA (G1) n=9, Conventional (G2) n=9 and Control (G3) n=9, soon after, the body temperature was captured by a thermographic camera in a laboratory previously climatized at 23 ° C and the performance functional was analyzed by the tests - Single Hop, Triple Hop, Six Meter Timed hop, Vertical Jump, Quadrant Jump. Then, the warming protocols (FIFA 11+ and Conventional) were carried out, at the end of the protocols they again performed the functional performance test and the thermographic analysis. The tests were carried out in an area previously demarcated in a multisport court with an average distance of 60 m from the laboratory, and the control group remained only in an orthostatic position when the G1 and G2 were warmed up. Both warm-up protocols were composed of specific exercises (light and fast runs, sprints and sudden changes in direction, jumps and squats) and lasted an average of 10 minutes each. The data were analyzed for normality by the Shapiro Wilk test. The Krushal Wallis test was used in the intergroup analysis and the Wilcoxon test was used for intragroup evaluation. For all tests, the significance value of p <0.05 was considered. In the intra-group analysis, significant decreases were observed in the execution time of the non-dominant Six Meter Timed Hop test (p = 0.01) and an increase in the total reach of the Vertical Jump test (p = 0.01) in G2. There was also an increase in the final score in the intragroup analysis of the Quadrant Jump test for G1 (p = 0.009), G2 (p = 0.008) and G3 (p = 0.02). In the thermographic analysis, a significant increase in surface temperature was observed in the areas of interest (anterior thigh, posterior thigh, anterior leg, posterior leg) of the dominant and non-dominant members for the three groups (p <0.05). No significant differences were found in the intergroup analyzes of the thermographic evaluation and performance in functional tests (p> 0.05). It is concluded that the acute

application of the conventional protocol in the evaluated conditions demonstrated significant improvements in the timed jump and in the high jump. The acute application of the FIFA11 + protocol, however, did not present significant differences in functional performance. A significant increase in acute body temperature was observed in the evaluated groups, however, no significant differences were found between them.