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Maamer Slimani, Philip Davis, Emerson Franchini, Wassim Moalla
Slimani, M, Davis, P, Franchini, E, and Moalla, W. Rating of perceived exertion for quantification of training and combat loads during combat sport-specific activities: a short review. J Strength Cond Res 31(10): 2889-2902, 2017-The aim of this short review was to summarize data pertaining to the rating of perceived exertion (RPE) methods (RPE value and session-RPE) during combat sport-specific activities (i.e., competition and training) based on many factors, including contest type (i.e., official vs. simulated vs...
October 2017: Journal of Strength and Conditioning Research
Matthew J Hornsey, Kelly S Fielding
There is a worryingly large chasm between scientific consensus and popular opinion. Roughly one third of Americans are skeptical that humans are primarily responsible for climate change; rates of some infectious diseases are climbing in the face of anti-immunization beliefs; and significant numbers of the population worldwide are antievolution creationists. It is easy to assume that resistance to an evidence-based message is a result of ignorance or failure to grasp evidence (the "deficit model" of science communication)...
July 2017: American Psychologist
Pedro Olavo de Paula Lima, Alane Almeida Lima, Anita Camila Sampaio Coelho, Yuri Lopes Lima, Gabriel Peixoto Leão Almeida, Márcio Almeida Bezerra, Rodrigo Ribeiro de Oliveira
BACKGROUND: Brazilian Jiu-Jitsu (BJJ) athletes can be divided into two combat styles: pass fighters (PFs) and guard fighters (GFs). Flexibility of the posterior chain muscles is highly necessary in these athletes, especially in GFs. On the other hand, isometric strength of the trunk extensors is required in PFs. Handgrip strength is important in holding the kimono of the opponent, and symmetrical lower-limb strength is important for the prevention of injuries due to the overload caused by training...
February 2017: International Journal of Sports Physical Therapy
Leonardo Vidal Andreato, Francisco Javier Díaz Lara, Alexandro Andrade, Braulio Henrique Magnani Branco
BACKGROUND: Brazilian jiu-jitsu is a grappling combat sport that has intermittency as its core element; in other words, actions of high, moderate and low intensity are interspersed during matches, requiring a high level of conditioning to support optimal levels of performance for the total match time. The athletes perform from four to six matches during a day of competition, and this number may increase if the open-class competition, which is held parallel to the competition by weight class, is considered...
December 2017: Sports Medicine—Open
Leonardo V Andreato, Jonatas Fs Santos, João Vdc Esteves, Valeria Lg Panissa, Ursula F Julio, Emerson Franchini
This study analysed the physiological, nutritional and performance profiles of athletes practicing Brazilian jiu-jitsu. To this end, 15 athletes that practiced Brazilian jiu-jitsu (aged: 28 ± 5 years; 8 brown belts and 7 black belts; training experience: 11 ± 4 years) underwent anthropometric measurements (body composition and somatotype), dietary evaluation (24 h recall) and physical fitness tests (movement time, dynamometer handgrip, kimono grip strength, vertical jump and sit-and-reach tests). The athletes had 12...
December 1, 2016: Journal of Human Kinetics
Bruno Follmer, Rodolfo André Dellagrana, Luis Antonio Pereira de Lima, Walter Herzog, Fernando Diefenthaeler
Upper-body dynamic and isometric maximum strength are essential components for success in Brazilian jiu-jitsu (BJJ). This study was aimed at analysing strength parameters in the elbow flexor and extensor muscles of BJJ practitioners. Participants (n = 28) performed maximum isometric contractions of elbow flexors and extensors to determine peak torque (PT), rate of force development (RFD), and the torque-angle (T-A) relationship at elbow angles of 45°, 60°, 75°, 90°, 105°, and 120°. Additionally, concentric and eccentric PTs were measured at 1...
December 2017: Journal of Sports Sciences
Paulo José Llinás, Rafael Fernando Serrano, Laureano Quintero Barrera, Juan Carlos Quiceno Noguera, Juan Pablo Martinez Cano
BACKGROUND: The World Games is a multisport event, second in importance only to the Olympic Games. Systematic surveillance of injuries and ill-health episodes is an essential part of modern integral healthcare given to athletes. AIM: To describe and analyse injuries and ill-health episodes affecting competitors during the Cali World Games 2013. METHODS: This is a cross-sectional study of injuries and ill-health episodes suffered by competing athletes...
2016: BMJ Open Sport & Exercise Medicine
Líllian Beatriz Fonseca, Ciro J Brito, Roberto Jerônimo S Silva, Marzo Edir Silva-Grigoletto, Walderi Monteiro da Silva, Emerson Franchini
CONTEXT: Cold-water immersion (CWI) has been applied widely as a recovery method, but little evidence is available to support its effectiveness. OBJECTIVE: To investigate the effects of CWI on muscle damage, perceived muscle soreness, and muscle power recovery of the upper and lower limbs after jiu-jitsu training. DESIGN: Crossover study. SETTING: Laboratory and field. PATIENTS OR OTHER PARTICIPANTS: A total of 8 highly trained male athletes (age = 24...
July 2016: Journal of Athletic Training
Andrew R Jensen, Robert C Maciel, Frank A Petrigliano, John P Rodriguez, Adam G Brooks
CONTEXT: Mixed martial arts (MMA) is rapidly growing in popularity in the United States and abroad. This combat sport joins athletes from a wide variety of martial art disciplines, each with characteristic and distinguishing injury profiles, together in competition. Because of increasing participation by professionals and amateurs alike, injuries sustained by MMA athletes have been on the rise. EVIDENCE ACQUISITION: A review of relevant publications using the search term mixed martial arts and each of its component combat sports (eg, Muay Thai, Brazilian jiu-jitsu) from 1980 through 2015 was completed using PubMed and Google Scholar...
August 16, 2016: Sports Health
Daniele Detanico, Rodolfo André Dellagrana, Marina Saldanha da Silva Athayde, Rafael Lima Kons, Angel Góes
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%...
March 2017: Sports Biomechanics
Rodrigo Villar, Jason Gillis, Givanildo Santana, Daniel Santos Pinheiro, André L R A Almeida
The aims of this study were to design a specific Jiu-Jitsu anaerobic performance test (JJAPT) and investigate the relationship between blood lactate ([La]), heart rate (HR) and rating of perceived exertion (RPE) during simulated Brazilian Jiu-Jitsu combat (SBJJC) and JJAPT. Nine men elite Brazilian medium heavy weight athletes performed a 10-minute SBJJC and JJAPT that required performance of a common BJJ technique for five consecutive bouts of 1-minute with 45-s rest between bouts. [La] was measured by a lactate analyzer, HR by heart rate monitor, RPE using Borg's scale, and the number of butterfly lifts (NBL) was recorded...
June 29, 2016: Journal of Strength and Conditioning Research
Rubens B Santos-Junior, Bernardo B Bernardi, Steven R McAnulty, Alan C Utter, Tácito P Souza-Junior
No abstract text is available yet for this article.
May 2016: Medicine and Science in Sports and Exercise
Andre de Camargo Smolarek, Steven R McAnulty, Alan C Utter, Tacito P Souza-Junior
No abstract text is available yet for this article.
May 2016: Medicine and Science in Sports and Exercise
Lachlan P James, G Gregory Haff, Vincent G Kelly, Emma M Beckman
BACKGROUND: Mixed martial arts (MMA) is a combat sport underpinned by techniques from other combat disciplines, in addition to strategies unique to the sport itself. These sports can be divided into two distinct categories (grappling or striking) based on differing technical demands. Uniquely, MMA combines both methods of combat and therefore appears to be physiologically complex requiring a spectrum of mechanical and metabolic qualities to drive performance. However, little is known about the physiological characteristics that distinguish higher- from lower-level MMA athletes...
October 2016: Sports Medicine
Braulio Henrique Magnani Branco, David Hideyoshi Fukuda, Leonardo Vidal Andreato, Jonatas Ferreira da Silva Santos, João Victor Del Conti Esteves, Emerson Franchini
OBJECTIVES: The present study aimed to evaluate the effects of using hyperbaric oxygen therapy during post-training recovery in jiu-jitsu athletes. METHODS: Eleven experienced Brazilian jiu-jitsu athletes were investigated during and following two training sessions of 1h30min. Using a cross-over design, the athletes were randomly assigned to passive recovery for 2 hours or to hyperbaric oxygen therapy (OHB) for the same duration. After a 7-day period, the interventions were reversed...
2016: PloS One
Francisco Javier Diaz-Lara, Juan Del Coso, Jose Manuel García, Luis J Portillo, Francisco Areces, Javier Abián-Vicén
Scientific information about the effects of caffeine intake on combat sport performance is scarce and controversial. The aim of this study was to investigate the effectiveness of caffeine to improve Brazilian Jiu-jitsu (BJJ)-specific muscular performance. Fourteen male and elite BJJ athletes (29.2 ± 3.3 years; 71.3 ± 9.1 kg) participated in a randomized double-blind, placebo-controlled and crossover experiment. In two different sessions, BJJ athletes ingested 3 mg kg(-1) of caffeine or a placebo...
November 2016: European Journal of Sport Science
Fabrício Boscolo Del Vecchio, Denis Foster Gondim, Antonio Carlos Pereira Arruda
Boscolo Del Vecchio, F, Foster, D, and Arruda, A. Functional movement screening performance of Brazilian jiu-jitsu athletes from Brazil: differences considering practice time and combat style. J Strength Cond Res 30(8): 2341-2347, 2016-Brazilian jiu-jitsu (BJJ) is a grappling combat sport that athletes, lying (guard fighter) or kneeling (pass fighter) on the mat, attempt to force their opponents to submit. Brazilian jiu-jitsu practices may result in muscular imbalances, which increase the risk of injury. Instead, the Functional Movement Screen (FMS) is an evaluation routine that could be related to injury incidence and seeks to detect muscular imbalance and movement dysfunction...
August 2016: Journal of Strength and Conditioning Research
José R Matos-Souza, Guilherme de Rossi, Anselmo A Costa E Silva, Eliza R Azevedo, Karla R Pithon, Roberto Schreiber, Andrei C Sposito, José I Gorla, Alberto Cliquet, Wilson Nadruz
OBJECTIVE: To determine whether regular performance of adapted sports is associated with long-term changes in carotid atherosclerosis in subjects with spinal cord injury (SCI). DESIGN: Prospective observational study. SETTING: Academic medical center. PARTICIPANTS: Men with chronic (>1y) SCI and no preserved motor function below the injury level were evaluated in 2007 and 2012 (N=17). Nine subjects did not perform physical activity between the studied time points (control group), whereas 8 subjects entered competitive upper-body sports programs (rugby: n=5, basketball: n=1, jiu-jitsu: n=1, and tennis: n=1) after baseline and were regularly training at the time of the second evaluation (sports group)...
June 2016: Archives of Physical Medicine and Rehabilitation
Leonardo V Andreato, Ursula F Julio, Valeria L G Panissa, João V D C Esteves, Felipe Hardt, Solange M F de Moraes, Camila O de Souza, Emerson Franchini
The aim of this study was to analyze physiological responses in Brazilian jiu-jitsu athletes during simulated competition. To this end, 10 athletes (age: 28 ± 4 years, body mass: 81.8 ± 7.4 kg, body fat: 13.0 ± 4.8%, systematic practice: 11 ± 4 years) were analyzed in simulated competition (4 matches of 10 minutes). Blood samples were taken to assess energy demand, hormonal responses, and cell damage. Additionally, the heart rate variability (HRV) response was analyzed. The main results show that in simulated competition, during the last matches, athletes had lower lactate (p < 0...
September 2015: Journal of Strength and Conditioning Research
Felipe J J Reis, Mariana D Dias, Flavia Newlands, Ney Meziat-Filho, Adriana R Macedo
OBJECTIVES: To identify the prevalence of chronic low back pain (CLBP) and functional disability in Brazilian jiu-jitsu athletes. STUDY DESIGN: Cross-sectional, observational. SETTINGS: The study was conducted at jiu-jitsu training sites in the State of Rio de Janeiro. MAIN OUTCOME MEASURES: Presence of Chronic low back pain and Quebec Back Pain Disability Scale. RESULTS: The sample was composed of 72 athletes (mean age of 26...
November 2015: Physical Therapy in Sport
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