O perfil de lutadores de jiu-jitsu brasileiro de alto nível e a ingestão de carboidrato em diferentes momentos pré luta de jiu-jitsu brasileiro e sua resposta na força de preensão manual e percepção subjetiva de esforço

• Autor(a) principal: Verli, Márcio Vinícius de Abreu
• Data de Publicação: 2021
• Tipo de documento: Dissertação
• Idioma: por
• Título da fonte: Repositório Institucional da UFMT
• Texto Completo: http://ri.ufmt.br/handle/1/4885
• topic: Artes marciais; Jiu-Jitsu; Esporte de combate; Performance esportiva; Performance esportiva; CNPQ::CIENCIAS DA SAUDE; Martial arts; Jiu-Jitsu; Combat sport; Athletic performance; Food supplementation

Jiu-jitsu is a fighting modality created for self-defense without the use of weapons. Itshistory is quite controversial, but one of the most accepted reports in the literature attributes its creation to Prince Siddhartha Gautama. This martial art, upon arriving in Brazil, was developed much more on the ground, giving rise to the modality known worldwide as Brazilian jiu-jitsu. As it is an acyclic and intermittent activity, Brazilian jiu-jitsu requires a great deal of energy, causing the glycolysis process to be intensified, thereby increasing the search for strategies that can maximize performance, mainly through the ingestion of food supplements in the pre-fight moment. Therefore, investigating and understanding the profile of high-level Brazilian jiu-jitsu athletes is necessary in the search for strategies to improve performance. Although the literature presents studies that take into account the influence of fighting for athletes, there are few works that seek to trace the profile of high-level athletes. Thus, the current study aimed to investigate the effects of prior carbohydrate intake, at different times, on blood glucose, handgrip strength and subjective perception of effort in professional Brazilian jiu-jitsu athletes and to draw a hematological, biochemical, urinalysis, anthropometric, body composition, and physical conditioning profile of professional Brazilian jiu-jitsu athletes. First, the athletes were randomly divided into three groups: Control Group (no supplementation); Experimental group 1 (immediately pre-fight supplementation); and Experimental Group 2 (30-minute pre-fight supplementation). Hand grip strength was measured with a JAMAR® analog hydraulic dynamometer in the pre- and post-fight moments. Blood glucose was measured at pre, post, and 5, 10, and 15 minutes after the fight. The perception of effort intensity was verified by an adapted Borg scale. Mean and standard deviation values were calculated for all variables, the T test was used to compare moments and a significance level of 5% was assumed. In a second moment of the study, hematological, biochemical, urinalysis, anthropometric, body composition, and physical conditioning analyses were performed in 12 professional Brazilian jiu-jitsu athletes. For comparisons between groups, athletes were separated into two groups (lightweight and heavyweight) according to the weight categories in which they compete. The data obtained showed a significant increase in hand grip strength and blood glucose between moments only for experimental group 2, while the perception of exertion was more intense for the control group. Carbohydrate intake prior to a Brazilian jiu-jitsu match seems to reduce subjectively perceived fatigue and significantly increase hand grip strength and blood glucose levels when ingested 30 minutes before the match. In addition, significant differences were observed between groups for body mass, BMI, skinfolds (except for thigh skinfold), percentage of body fat, lean mass, fat mass, horizontal abduction of right and left shoulders, resting heart rate, platelets, urine pH, and density. Thus, the data presented in this dissertation are intended to support interventions related to Brazilian jiu-jitsu at a competitive level in order to optimize performance and safety in sports practice.