title: Neuromuscular responses to simulated brazilian jiu-jitsu fights.
abstract: The aim of this study was to investigate the neuromuscular performance responses following successive Brazilian Jiu-Jitsu (BJJ) fights. Twenty-three BJJ athletes (age: 26.3 ± 6.3 years; body mass: 79.4 ± 9.7 kg; body height: 1.80 ± 0.1 m) undertook 3 simulated BJJ fights (10 min duration each separated by 15 min of rest). Neuromuscular performance was measured by the bench press throw (BPT) and vertical counter movement jump (VCMJ) tests, assessed before the 1st fight (Pre) and after the last one (Post). Blood lactate (LA) was measured at Pre, 1 min Post, and 15 min Post fights. Paired t-tests were employed in order to compare the BPT and VCMJ results. One-way ANOVA with Bonferroni post hoc tests were utilized to compare LA responses. The results revealed a significant (p < 0.05) increase in VCMJ performance (40.8 ± 5.5 cm Pre vs. 42.0 ± 5.8 cm Post), but no significant changes in the BPT (814 ± 167 W Pre vs. 835 ± 213 W Post) were observed. LA concentration increased significantly (p < 0.05) at Post, both in the 1st min (10.4 ± 2.7 mmol L-1) and the 15th min (6.4 ± 2.5 mmol L-1) of recovery. We concluded that successive simulated BJJ fights demanded considerable anaerobic contribution of ATP supply, reinforcing the high-intensity intermittent nature of the sport. Nevertheless, no negative impact on acute neuromuscular performance (power) was observed.
authors.affiliation: Human Performance and Sport Research Group, Postgraduate Program in Physical Education, Federal University of Triangulo Mineiro, Uberaba, Minas Gerais, Brazil. ; University Center of Belo Horizonte (Uni-BH), Department of Environmental, Biological and Health Sciences, Belo Horizonte, Minas Gerais, Brazil.
authors.forename: Bruno Victor Corrêa
authors.initials: BV
authors.lastname: da Silva
authors.affiliation: Laboratory of Exercise Biochemistry, Biochemistry Department, Biology Institute, State University of Campinas, Campinas, Sao Paulo, Brazil.
authors.forename: Bernardo Neme
authors.initials: BN
authors.lastname: Ide
authors.affiliation: Human Performance and Sport Research Group, Postgraduate Program in Physical Education, Federal University of Triangulo Mineiro, Uberaba, Minas Gerais, Brazil.
authors.forename: Mário Antônio
authors.initials: MA
authors.lastname: de Moura Simim
authors.affiliation: Human Performance and Sport Research Group, Postgraduate Program in Physical Education, Federal University of Triangulo Mineiro, Uberaba, Minas Gerais, Brazil.
authors.forename: Moacir
authors.initials: M
authors.lastname: Marocolo
authors.affiliation: Human Performance and Sport Research Group, Postgraduate Program in Physical Education, Federal University of Triangulo Mineiro, Uberaba, Minas Gerais, Brazil.
authors.forename: Gustavo Ribeiro
authors.initials: GR
authors.lastname: da Mota
keywords: aerobic and anaerobic metabolism; combat sports; muscle power; performance changes