Author/Authors :
Andreato, Leonardo V Exercise Physiology Laboratory - Human Physiology Department - University State of Maringá, Brazil , Franchini, Emerson Martial Arts and Combat Sports Research Group - Sport Department - School of Physical Education and Sport - University of São Paulo, Brazil , de Moraes, Solange M.F Exercise Physiology Laboratory - Human Physiology Department - University State of Maringá, Brazil , Pastório, Juliana J Exercise Physiology Laboratory - Human Physiology Department - University State of Maringá, Brazil , da Silva, Danilo F Exercise Physiology Laboratory - Human Physiology Department - University State of Maringá, Brazil , Esteves, Joao V.D.C Exercise Physiology Laboratory - Human Physiology Department - University State of Maringá, Brazil , Branco, Braulio H.M Exercise Physiology Laboratory - Human Physiology Department - University State of Maringá, Brazil , Romero, Paulo V.dS. Exercise Physiology Laboratory - Human Physiology Department - University State of Maringá, Brazil , Machado, Fabiana A Exercise Physiology Laboratory - Human Physiology Department - University State of Maringá, Brazil
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 rating. 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 8:1.
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.
Keywords :
Athletic Performance , Sports , jiu-jitsu , Martial Arts , Combat Sports
