title: Effect of a Brazilian Jiu-jitsu-simulated tournament on strength parameters and perceptual responses.
abstract: This study aimed to analyse the effects of a simulated Brazilian jiu-jitsu (BJJ) tournament on vertical jump performance, grip strength test and perceived effort responses. 22 male BJJ athletes participated in a simulated tournament consisting of three 7 min matches separated by 14 min of rest. Kimono grip strength test (KGST), counter movement jump (CMJ) and rate of perceived exertion (RPE) were measured before and after each match, while RPE of specific areas was assessed after three matches. ANOVA for repeated measures was used to compare strength parameters after each match with the level of significance set at 5%. The key results showed a significant decrease of jump height (p = 0.001) and net vertical impulse in the CMJ (p = 0.031), as well as a reduction of the number of reps in the KGST (p < 0.001). A significant increase of RPE was found throughout the matches (p < 0.001). Considering the RPE in specific areas, no differences were observed between the upper and lower body (p = 0.743). We conclude that the BJJ simulated tournament generated a decrease of performance in both upper and lower limbs and provoked a progressive increase in the effort perception over the matches.
authors.affiliation: a Biomechanics Laboratory , Federal University of Santa Catarina , Florianópolis , Brazil.
authors.forename: Daniele
authors.initials: D
authors.lastname: Detanico
authors.affiliation: a Biomechanics Laboratory , Federal University of Santa Catarina , Florianópolis , Brazil.
authors.forename: Rodolfo André
authors.initials: RA
authors.lastname: Dellagrana
authors.affiliation: a Biomechanics Laboratory , Federal University of Santa Catarina , Florianópolis , Brazil.
authors.forename: Marina Saldanha da Silva
authors.initials: MS
authors.lastname: Athayde
authors.affiliation: a Biomechanics Laboratory , Federal University of Santa Catarina , Florianópolis , Brazil.
authors.forename: Rafael Lima
authors.initials: RL
authors.lastname: Kons
authors.affiliation: a Biomechanics Laboratory , Federal University of Santa Catarina , Florianópolis , Brazil.
authors.forename: Angel
authors.initials: A
authors.lastname: Góes
mesh_terms: D000328:Adult; D054874:Athletic Performance / Q000502:physiology*; D001696:Biomechanical Phenomena; D001938:Brazil; D003163:Competitive Behavior / Q000502:physiology; D018737:Hand Strength / Q000502:physiology; D006801:Humans; D035002:Lower Extremity / Q000502:physiology; D008297:Male; D016139:Martial Arts / Q000502:physiology*; D009068:Movement / Q000502:physiology; D053580:Muscle Strength / Q000502:physiology*; D010465:Perception; D005082:Physical Exertion / Q000502:physiology; D034941:Upper Extremity / Q000502:physiology; D055815:Young Adult
keywords: Combat sports; fatigue; rate of perceived exertion; stretch-shortening cycle; vertical impulse