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São Paulo, São Paulo, Brazil
Professor da EEFE-USP; Praticante e Pesquisador de Judô; Preparador físico de atletas de modalidades esportivas de combate.

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terça-feira, 12 de fevereiro de 2013

Artigo sobre BJJ: vai sair

Asian Journal of Sports Medicine


Physiological and technical-tactical analysis in Brazilian jiu-jitsu competition

Leonardo Vidal Andreato, Emerson Franchini, Solange Marta Franzói de Moraes, Juliana Jacques Pastório, Danilo Fernandes da Silva da Silva, João Victor Del Conti Esteves, Braulio Henrique Magnani Branco, Paulo Vitor da Silva Romero, Fabiana Andrade Machado

Abstract


Purpose: The present study aims at investigating the physiological response and technical-tactical parameters in Brazilian jiu-jitsu competition.
Methods: The study included 35 male Brazilian jiu-jitsu athletes (adult category, body mass: 80.2 ± 13.0 kg), graded from white to brown belt, during combats fought at regional level. Twenty-two fights were analyzed in terms of technique and time structure. Blood glucose, lactate and maximal isometric grip strength were determined before and after the fights. The rate of perceived exertion was also assessed after the fight, using the 6-20 Borg scale. The fights were recorded and the following variables were determined: the exertion/pause ratio and subjective intensity of actions, categorized between low and high intensity.
Results: The results indicated that during Brazilian jiu-jitsu fights, the glycolytic pathway is only moderately activated (lactate before: 4.4 (4.0 – 4.6) mmol/L, after: 10.1 (8.0 – 11.3) mmol/L; glucose before: 112.4 ± 22.3 mg/dL, after: 130.5 ± 31.0 mg/dL). The exertion during the fight resulted in significant reductions in handgrip strength (right hand grip before: 45.9 ± 10.3 kgf, after: 40.1 ± 9.5 kgf; left hand grip before: 44.2 ± 11.1 kgf, after: 37.0 ± 10.2 kgf). The athletes rated the fight as hard: 15 (13 – 15). Effort/pause ratio was 6:1, while high-intensity actions lasted approximately 4 s, resulting in a low/high intensity ratio of 6:1.
Conclusions: It is recommended that coaches direct the training loads to simulate the energy demand imposed by the competitive matches, activating moderately the glycolytic pathway. Moreover, the time structure of combats can be used to prescribe both physical and technical-tactical training.
Key Words: Combat Sports; Martial Arts; jiu-jitsu; Sports; Athletic Performance
http://asjsm.tums.ac.ir/index.php/asjsm/article/view/306/pdf

2 comentários:

  1. Parabéns pela publicação.
    Já comecei a ler e está bem legal.

    ResponderExcluir
  2. Esse demorou para escrevermos e atendermos algumas sugestões. Creio q ficou bom, diante das limitações q é fazer pesquisa com L/AM/MEC

    ResponderExcluir