segunda-feira, 9 de dezembro de 2013

Respostas fisiológicas e percepção subjetiva de esforço durante competição internacional de karate (kumite)

Primeiro autor (Montassar Tabben) medalhista em Campeonato Mundial.

Asian Journal of Sports Medicine 2013. 4(4):263-271.

Physiological and Perceived Exertion Responses during International Karate Kumite Competition
Montassar Tabben, Rim Sioud, Monoem Haddad, Emerson Franchini, Anis Chaouachi, Karim Chamari, Claire Tourny-Chollet


Purpose: Investigate the physiological responses and rating of perceived exertion (RPE) in elite karate athletes and examine the relationship between a subjective method (Session-RPE) and two objective heart-rate (HR)-based methods to quantify training-load (TL) during international karate competition.

Methods: Eleven karatekas took part in this study, but only data from seven athletes who completed three matches in an international tournament were used (four men and three women). The duration of combat was 3 min for men and 2 min for women, with 33.6±7.6 min for the first interval period (match 1−2) and 14.5±3.1 min for the second interval period (match 2−3). HR was continuously recorded during each combat. Blood lactate [La-] and (RPE) were measured just before the first match and immediately after each match.

Results: Means total fights time, HR, %HRmax, [La-], and session-RPE were 4.7±1.6 min, 182±9 bpm, 91±3%, 9.02±2.12 mmol.L-1 and 4.2±1.2, respectively. No significant differences in %HRmax, [La-], and RPE were noticed across combats. Significant correlations were observed between RPE and both resting HR (r=0.60; P=0.004) and mean HR (r=0.64; P=0.02), session-RPE and Banister training-impulse (TRIMP) (r=0.84; P<0.001) and Edwards TL (r=0.77; P<0.01).

Conclusion: International karate competition elicited near-maximal cardiovascular responses and high [La-]. Training should therefore include exercise bouts that sufficiently stimulate the zone between 90 and 100% HRmax. Karate coaches could use the RPE-method to follow competitor’s competition loads and consider it in their technical and tactical training.

Key Words: Martial Arts; Heart Rate; Blood Lactate; Rating of Perceived Exertion

sábado, 7 de dezembro de 2013

Expert Scapes: mais um troço maluco para classificar os pesquisadores...Bem que o COB poderia usar para contratar especialistas :)

Lutas e Educação Física Escolar

O conteúdo das lutas nas séries iniciais do ensino fundamental: possibilidades para a prática pedagógica da Educação Física escolar

Nathalia Chaves Gomes, André Minuzzo de Barros, Fernando Paulo Rosa de Freitas, Suraya Cristina Darido, Luiz Gustavo Bonatto Rufino

As lutas são conteúdos da Educação Física que devem estar presentes na prática pedagógica. Contudo, há ainda lacunas e incompreensões em seu desenvolvimento pedagógico. Assim, por meio de uma revisão de literatura, este estudo objetivou analisar as lutas compreendendo sua importância, bem como apresentando uma forma de classificação. Em um segundo momento, apresentou-se uma proposta de organização curricular das lutas nas séries iniciais do ensino fundamental. Conclui-se ser importante compreender as lutas enquanto conteúdos das aulas de Educação Física propondo uma organização dos conteúdos que pode contribuir com a apropriação crítica dessa manifestação da cultura corporal de movimento.

terça-feira, 3 de dezembro de 2013

Estruturas cerebrais de artistas marciais e corredores

 2013 Nov 28. pii: S0306-4522(13)00993-7. doi: 10.1016/j.neuroscience.2013.11.046. [Epub ahead of print]

Sports and brain morphology - a voxel based morphometry study with endurance athletes and martial artists.


Department of Neurology, BG-Kliniken Bergmannsheil, Ruhr Universität Bochum, Bochum, Germany. Electronic address:


Physical exercises and motor skill learning have been shown to induce changes in regional brain morphology, this has been demonstrated for various activities and tasks. Also individuals with special skills show differences in regional brain morphology. This has been indicated for professional musicians, London taxi drivers, as well as for athletes like dancers, golfers and judokas. However little is known about whether sports with different metabolic profiles (aerobic vs. anaerobic) are associated with different patterns of altered brain morphology. In this cross-sectional study we investigated two groups of high performance athletes, one group performing sports that are thought to be mainly aerobic, and one group performing sports known to have intermittent phases of anaerobic metabolism. Using high resolution structural imaging and voxel based morphometry (VBM), we investigated a group of 26 male athletes consisting of 13 martial artists and 13 endurance athletes as well as a group of non-exercising men (n = 13). VBM analyses revealed higher gray matter volumes in the supplementary motor area/dorsal premotor cortex (BA 6) in both athlete groups as compared to the control group. In addition, endurance athletes showed significantly higher gray matter volume in the medial temporal lobe, specifically in the hippocampus and parahippocampal gyrus, which was not seen in the martial arts group. Our data suggest that high performance sports are associated with changes in regional brain morphology in areas implicated in motor planning and motor learning. In addition high level endurance sports seem to affect medial temporal lobe structures, areas that have previously been shown to be modulated by aerobic exercise.

segunda-feira, 2 de dezembro de 2013

Minha carta ao editor do BJSM sobre o número especial de "judô/artes marciais"

Letter to the editor Judo, the way of mutual welfare and benefits

I would like to congratulate Dr. Nikos Malliaropoulos for the initiative to organize a Judo and Martial Arts issue in this prestigious journal1, a topic with increased number of publications in the last decades.2 However, despite the broad range of topics suggested in the initial call for papers1, only four papers (including the editorial) about judo/martial arts were published, which can be an indicative that the high -level quality required by the British Journal of Sporst Medicine is still to be achieved by researchers working on this topic, although no information was provided in the editorial concerning the number of papers submitted and the proportion of articles approved. Other aspects in this editorial also deserve attention: (a) despite the fact that the Kodokan Judo Institute 3 and the International Judo Federation4 present the date of judo creation as 1882, the authors presented 1888 as the year judo was invented, but no reference was given for this fact; (b) the affirmation that "very little has changed since judo was invented.."(p.1137)5 is greatly different from what researchers in judo history6 and sport sociology7 have presented, especially about what has been called judo Westernization or reflexive judo institutional modernization7,8 and women participation, mainly in Japan9; (c) it is well known that Dr. Jigoro Kano (the founder of judo) proposed this modality to achieve different groups and to contribute to physical, moral and intelectual development6 and that there is a tendency to believe that martial arts can contribute to children development especifically 10, but the use of the International Judo Federation4 as reference to describe the benefits of judo lacks scientific background. Prudent skepticism was recommended11 and a lack of evidence was presented12 concerning the real effects of martial arts programs on children development. Furthermore, many recent cases of catastrophic head and neck injuries13, and of female Japanese athletes being physically punished by their coaches, among other problems, have been reported recently in judo.14 Thus, a more balanced and critical view would be preferred in this editorial; (d) although a traditional judo especialization course has been promoted by the International Budo University (Japan) for many years15, and a specialization for judo coaches has been offered by Leipzig University since 199116, the authors of the editorial opted to describe only a course in which one of them is the coordinator and another is a former student, while no competing interests were reported; (e) finally, there is no such institution called "International Judo Federation Union" as presented in the end of the editorial. I hope this letter helps to improve the information provided by the authors and contribute to discussions concerning judo and martial arts research for mutual welfare and benefits as proposed by the founder of judo, Dr. Jigoro Kano. Emerson Franchini Martial Arts and Combat Sports Research Group, School of Physical Education and Sport, University of S?o Paulo, Brazil The author of this letter declare no competing interests.
References 1. Khan, K. Call for papers - the ECOSEP BJSM judo and martial arts issue 2013. -judo-and-martial-arts-issue-2013/ (accessed 19 Nov 2013) 2. Peset F, Ferrer-Sapena A, Villam?n M et al. Scientific literature analysis of judo in Web of Science ?. Arch Budo 2013;9:81-91. 3. History of Kodokan Judo. Kodokan Judo Institute. (accessed 19 Nov 2013) 4. What is judo? International Judo Federation. (accessed 20 Nov 2013) 5. Malliaropoulos, N, Callan M, Puim B. Judo, the gentle way. Br J Sports Med 2013;47:1137. 6. Carr KG. Making way: war, philosophy and sport in Japanese judo. J Sport Hist 1993;20:167-88. 7. Villam?n M, Brown D, Espartero J, Guti?rrez C. Reflexive modernization and the disembedding of judo from 1946 to the 2000 Sydney Olympics. Int Review Sociol Sport 2004;39:139-56. 8. Saeki T. Organizational reformation of the All Japan Judo Federation organization: a sociological study of issues surrounding the conflict between tradition and modernization in a sport. Int Review Sociol Sport 1994;29:301-15. 9. Miarka B, Marques JB, Franchini E. Reinterpreting the history of women's judo in Japan. Int J Hist Sport 2011;28:1016-29. 10. Diamond A, Lee K. Interventions shown to aid executive function development in children 4 to 12 years old. Science 2011;333:959-64. 11. Strayhorn JM, Strayhorn JC. Martial arts research: prudente skepticism. Science 2011;334:310. 12. Mercer J. Martial arts research: weak evidence. 2011;334:310-1. 13. Kamitani T, Nimura Y, Nagahiro S, et al. Catastrophic head and neck injuries in judo players in Japan from 2003 to 2010. Am J Sports Med 2013;41:1915-21. 14. Judo coach's physical assault off emale athletes is a warning to entire Japanese sporting world. http://www.japan- (accessed 20 Nov 2013). 15. International Budo University Special Course - Budo Specialization Program. (accessed 20 Nov 2013). 16. International Coaching Course. http://www.uni- (accessed 20 Nov 2013).

Conflict of Interest:

None declared

sexta-feira, 29 de novembro de 2013

Aceleração do soco no karate

 2013 Nov 22. [Epub ahead of print]

Predicting Punching Acceleration from Selected Strength and Power Variables in Elite Karate Athletes: A Multiple Regression Analysis.


1Pão de Açúcar Group - Nucleus of High Performance in Sport, São Paulo, SP, Brazil 2Martial Arts and Combat Sports Research Group, School of Physical Education and Sport, University of São Paulo, SP, Brazil 3Laboratory of Applied Nutrition and Metabolism, School of Physical Education and Sport, University of São Paulo, SP, Brazil 4School of Physical Education and Sport, University of São Paulo, São Paulo, SP, Brazil 5Brazilian Karate Confederation, Brazil.


The present study investigated the relationship between punching acceleration and selected strength and power variables in nineteen professional karate athletes from the Brazilian National Team (9 men and 10 women; age: 23 ± 3 years; height: 1.71 ±0.09 m and body mass: 67.34 ± 13.44 kg). Punching acceleration was assessed under four different conditions in a randomized order: 1) fixed distance aiming to attain maximum speed (FS); 2) fixed distance aiming to attain maximum impact (FI); 3) self-selected distance aiming to attain maximum speed (SSS) and 4) self-selected distance aiming to attain maximum impact (SSI). The selected strength and power variables were as follows: maximal dynamic strength in bench press and squat-machine, squat and countermovement jump height, mean propulsive power in bench throw and jump squat, and mean propulsive velocity in jump squat with 40% of body mass. Upper and lower-body power and maximal dynamic strength variables were positively correlated to punch acceleration in all conditions. Multiple regression analysis also revealed predictive variables: relative mean propulsive power in squat jump (W/kg), and maximal dynamic strength (1RM) in both bench press and squat-machine exercises. An impact-oriented instruction and a self-selected distance to start the movement seem to be crucial to reach the highest acceleration during punching execution. This investigation, while demonstrating strong correlations between punching acceleration and strength-power variables, also provides important information for coaches, especially for designing better training strategies to improve punching speed.

Boneco articulado

sexta-feira, 22 de novembro de 2013

Lateralidade no MMA

Lateralidade no MMA. Não deu diferença, mas como os autores tinham uma ideia fixa, concluíram o que queriam...Se é para fazer isso, nem roda a estatística...

 2013 Nov 19;8(11):e79793.

The Southpaw Advantage? - Lateral Preference in Mixed Martial Arts.


School of Kinesiology and Health Science, York University, Toronto, Canada.


Performers with a left-orientation have a greater likelihood of obtaining elite levels of performance in many interactive sports. This study examined whether combat stance orientation was related to skill and success in Mixed Martial Arts fighters. Data were extracted for 1468 mixed martial artists from a reliable and valid online data source. Measures included fighting stance, win percentage and an ordinal measure of skill based on number of fights. The overall analysis revealed that the fraction of fighters using a southpaw stance was greater than the fraction of left-handers in the general population, but the relationship between stance and hand-preference is not well-understood. Furthermore, t-tests found no statistically significant relationship between laterality and winning percentage, although there was a significant difference between stances for number of fights. Southpaw fighters had a greater number of fights than those using an orthodox stance. These results contribute to an expanding database on the influence of laterality on sport performance and a relatively limited database on variables associated with success in mixed martial arts.

terça-feira, 19 de novembro de 2013

Recebi o convite para fazer um curso de mestrado e/ou doutorado

Deem uma olhada na propaganda e nos erros de digitação. Ainda bem que o curso não é na área de Português, não é? Afinal, quem precisa escrever direito nos dias de hoje...

De quebra, segue o link de um vídeo sobre como as pessoas não prestam atenção no que os outros falam. Deixei de pensar que eu que não sou claro quando explico algo...

domingo, 10 de novembro de 2013

Lutador tem que estudar

 2013 Nov 4. [Epub ahead of print]

The Protective Effect of Education on Cognition in Professional Fighters.


Lou Ruvo Center for Brain Health, Cleveland Clinic, Cleveland, OH, USA.


Education has a protective effect against cognitive deficits following various forms of brain insult. Professional fighting (boxing and mixed martial arts) provides a model for assessing the impact of cumulative brain injuries on cognition and brain health. In the current cross-sectional observational study, we explore whether education would be protective against cognitive loss in fighters. We tested 141 professional fighters using a computerized neurocognitive battery, in addition to structural MRI. We used automated segmentation software to compute the volumes of various brain structures. We found fighters with high school education or less to show more associations between fight exposure and cognitive test scores. The relationship between brain structure volume and exposure did not differ based on education. These results are interpreted as putatively showing a protective effect of education on functional integrity in fighters, although longitudinal data and a larger sample size are required to further understand this relationship.

segunda-feira, 4 de novembro de 2013

256 de trabalhos russos sobre esportes de combate
Em uma fase em que tudo que é russo é melhor, ter livro em português citado por eles deve significar alguma coisa...

Eu sempre respeitei os mascotes : )

Bem perto do que eu sugeri para uma aluna...

2013, Vol. 13, No. 2, 270–279
A Winning Smile? Smile Intensity, Physical Dominance, and Fighter Performance
Michael W. Kraus
University of Illinois, Urbana–Champaign
Teh-Way David Chen
University of California, Berkeley
The smile is perhaps the most widely studied facial expression of emotion, and in this article we examine its status as a sign of physical dominance. We reason, on the basis of prior research, that prior to a physical confrontation, smiles are a nonverbal sign of reduced hostility and aggression, and thereby unintentionally communicate reduced physical dominance. Two studies provide evidence in support of this prediction: Study 1 found that professional fighters who smiled more in a prefight photograph taken facing their opponent performed more poorly during the fight in relation to their less intensely smiling counterparts. In Study 2, untrained observers judged a fighter as less hostile and aggressive, and thereby less physically dominant when the fighters’ facial expression was manipulated to show a smiling expression in relation to the same fighter displaying a neutral expression. Discussion focused on the reasons why smiles are associated with decreased physical dominance.
Keywords: emotion, physical dominance, smiles, aggression

quinta-feira, 31 de outubro de 2013

FIJ divulga "estatística" das novas regras

Números que não batem...
Estatística das pontuações, segundo a FIJ:

Vamos considerar o Mundial Júnior: no arquivo acima são reportados 89 punições (shido), mas quando observamos os resultados da mesma competição, divulgados na semana passada (, o total de shido 1 é 198 e o total de todas as punições "shido" é de 662...

sábado, 26 de outubro de 2013

Fisiologia do judô: a luta

International Journal of Performance Analysis in Sport
2013, 13, 626-643.

Judo combat: time-motion analysis and physiology
Emerson Franchini1, Guilherme Giannini Artioli1,2 and Ciro José Brito1,3.
1 Martial Arts and Combat Sports Research Group, School of Physical Education and Sport, University of São Paulo, São Paulo, Brazil
2 Laboratory of Applied Nutrition and Metabolism, School of Physical Education and Sport, University of São Paulo, São Paulo, Brazil.
3 Center for Research in Sport Performance and Health (NEDES), Federal University of Sergipe, Sergipe, Brazil.

The understanding of time-motion and physiological responses to judo combat is important to training organization. This review was based on search results using the following terms: “judo and competition”, “judo and physiology”, “judo and randori”, and “judo and time-motion analysis”, “judo and combat”, “judo and match” and “judo and biochemestry”. The effort-pause ratio during judo combats is between 2:1 and 3:1, with 20s and 30s effort periods and 10s of pauses. Thus, judo combats rely on all three metabolisms, with the anaerobic alactic sytem being reponsible by the short duration powerful actions during technique applications, the anaerobic lactic system being responsible for the maintainance of high-intensity actions during longer periods (e.g., grip dispute), while the aerobic system is responsible for the recovery processes between high-intensity actions and matches. Training prescription must consider these demands and a muscle-specific action analysis may help to direct the proper approach to improve judo athletes’ performance. In general, lower-body is involved in short-term high-intensity actions during technique executions, while upper-body muscle groups are involved in both strength-endurance and power actions. As many muscle groups perform different actions during the match, a high cardiovascular demand is also observed in judo.

Fisiologia do judô: o treino

 2013 Oct 21. [Epub ahead of print]



1Martial Arts and Combat Sports Research Group, School of Physical Education and Sport, University of Sao Paulo, Sao Paulo, Brazil 2Center for Research in Sport Performance and Health (NEDES), Federal University of Sergipe, Sergipe, Brazil. 3Institute of Exercise Physiology & Wellness, University of Central Florida, Orlando, United States of America. 4Laboratory of Applied Nutrition and Metabolism, School of Physical Education and Sport, University of Sao Paulo, Sao Paulo, Brazil.


Understanding the physiological response to the most common judo training modalities may help to improve the prescription and monitoring of training programs. This review is based on search results using the following terms: "judo", "judo and training", "judo and physiology", "judo and specific exercises", and "judo and combat practice". Uchi-komi (repetitive technical training) is a specific judo exercise that can be used to improve aerobic and anaerobic fitness. Effort:pause ratio, total session duration, number and duration of individual sets as well as the type of technique can be manipulated in order to emphasize specific components of metabolism. Nage-komi (repetitive throwing training) can also be used to improve aerobic and anaerobic fitness, depending of the format of the training session. Randori (combat or fight practice; sparring) is the training modality most closely related to actual judo matches. Despite the similarities, the physiological demands of randori practice is not as high as observed during real competitive matches. Heart rate has not shown to be an accurate measure of training intensity during any of the previously mentioned judo training modalities. High-volume, high-intensity training programs often lead judo athletes to experience overtraining-related symptoms, with immunesupression being one of the most common. In conclusion, judo training and judo-specific exercise should be manipulated in order to maximize training response and competitive performance.

Como treinaram os judocas olímpicos brasileiros

 2013 Oct 21. [Epub ahead of print]

Olympic preparation in Brazilian judo athletes: description and perceived relevance of training practices.


1Martial Arts and Combat Sports Research Group, Sport Department, School of Physical Education and Sport, University of São Paulo 2Human Movement Pedagogy Department, School of Physical Education and Sport, University of São Paulo, Brazil.


The aim of this study was to describe the training routines used by judo athletes and their perception concerning the relevance, effort made, concentration needed and pleasure obtained during the training sessions conducted six months prior to their Olympic participation, and to compare medal winners and other competitors in these aspects. Sixty-one Olympic Brazilian judo athletes (males = 39; females = 22), representing 66.3% of all Brazilian participants in this Olympic sport (from 1964 to 2008), including 10 medal winners (nine males and one female) answered a questionnaire concerning their training routines. Mann-Whitney and Student t test for independent samples were used. Judo medallists and non-medallists in the Olympic Games did not differ in: (a) the age they started to practice and to compete in judo; (b) age when they competed in the Olympic Games; (c) hours of training per week and per training session and number of training sessions per day in their preparation for this event; (d) frequency and time spent performing judo-specific and general exercises, as well as their perceived relevance, effort, pleasure and concentration for these activities performed during the preparation for the Olympic Games. The only differences found were the groundwork (ne-waza) randori practice, which was less frequently performed by medal winners, and perceived relevance atributted to this activity, which was considered less relevant by the medal winners compared to non-medal winners. Thus, judo Olympic medal winners and non-medallists did not differ in many training aspects in the final phase of their preparation to the Olympic Games.

domingo, 20 de outubro de 2013

quarta-feira, 16 de outubro de 2013

Está aí um sujeito de coragem

Se afastar do trabalho com uma atleta com medalha em Jogos Olímpicos e Mundial só indica que o treinador estava mais comprometido com o trabalho do que a atleta...

sexta-feira, 11 de outubro de 2013

Como sempre eu tenho dificuldade em lidar com as informações...

Feliz por ter nosso artigo citado em um Position Statement da Comissão Médica do Comitê Olímpico Internacional

Por outro lado, lendo trecho do artigo onde o nosso trabalho foi citado:
"Also, a call has gone out for the International Judo Federation (IFJ) to implement regulations to improve
weight management behaviours among judo athletes, and for these regulations to be adapted by all national and regional federations. 20"

Me surgiram algumas dúvidas: (1) no artigo citado, não existe indicação explícita sobre isso, mas existe em um outro publicado em outro periódico (talvez tenham confundido os artigos); (2) aparentemente a IJF fez o contrário do recomendável...mas tudo bem, porque o pessoal do judô é "disciplinado" e concorda com tudo o que vem dos órgãos reguladores (sejam eles quais forem)...

Oss (é assim que se deve terminar todo texto ou interpelação à lutador "disciplinado"...)


sexta-feira, 4 de outubro de 2013

A prova de que pagando bem, tudo pode ser publicado

Matéria originalmente publicada no Estado de SP:
Isso me lembra um tempo em que pensávamos em fazer isso com algumas revistas...
Imagine só o seguinte experimento: Você escreve um trabalho científico falso, baseado em dados falsos, obtidos de experimentos sem validade científica, assinado com nomes falsos de pesquisadores que não existem, associados a universidades que também não existem, e envia esse trabalho para centenas de revistas científicas do tipo “open access” (que disponibilizam seu conteúdo gratuitamente na internet) para publicação. O que você acha que aconteceria?
Pois bem, um biólogo-jornalista norte-americano chamado John Bohannon fez exatamente isso e os resultados, publicados hoje pela revista Science, são aterradores (para aqueles que se preocupam com a credibilidade da ciência): ele escreveu um trabalho falso sobre as propriedades anticancerígenas de uma molécula supostamente extraída de um líquen e enviou esse trabalho para 304 revistas científicas de acesso aberto ao redor do mundo. Não só o trabalho era totalmente fabricado e obviamente incorreto, mas o nome do autor principal (Ocorrafoo Cobange) e da sua instituição (Wassee Institute of Medicine) eram fictícios. Apesar disso (pasmem!),  mais da metade das revistas procuradas (157) aceitou o trabalho para publicação. Um escândalo.
O que isso quer dizer? Quer dizer que tem muita revista “científica” por aí que não é “científica” coisíssima nenhuma. E que o fato de um estudo ter sido publicado não significa que ele esteja correto (pior, não significa nem mesmo que ele seja verdadeiro para começo de conversa). A ciência, assim como qualquer outra atividade humana, infelizmente não está isenta de falcatruas.
E o que isso não quer dizer? Não quer dizer que o sistema de open access seja intrinsecamente falho ou inválido. Certamente há revistas de acesso livre de ótima qualidade, como as do grupo PLoS, assim como há revistas pagas de baixa qualidade que publicam qualquer porcaria. Nenhum sistema é perfeito. Até mesmo a Science publica umas lorotas de vez em quando, assim como a Nature e outras revistas de alto impacto, que empregam os critérios mais rígidos de seleção e revisão. Além disso, o fato de uma revista ser gratuita não significa que ela não tenha revisão por pares (peer review) e outros filtros de qualidade. Assim, o que deve ser questionado não é a forma de disponibilizar a informação, mas a forma como ela é selecionada e apurada — em outras palavras, a qualidade e a confiabilidade da informação, não o seu preço.
relato de Bohannon acaba de ser publicado no site da Science, dentro de um pacote de artigos intitulado Comunicação na Ciência: Pressões e Predadores.
Nessa mesma temática, a revista Nature publicou recentemente também uma reportagem sobre o escândalo envolvendo quatro revistas científicas brasileiras que foram flagradas praticando citações cruzadas — ou “empilhamento de citações”, em inglês –, esquema pelo qual uma revista cita a outra propositadamente diversas vezes, como forma de aumentar seu fator de impacto (e, consequentemente, o prestígio dos pesquisadores que nelas publicam). As revistas são ClinicsRevista da Associação Médica BrasileiraJornal Brasileiro de Pneumologia Acta Ortopédica Brasileira.
O esquema foi descoberto pela empresa Thomson Reuters, maior referência internacional na produção de estatísticas de publicação e citações científicas. Como punição, as quatro revistas tiveram seu fator de impacto suspenso por um ano. A reportagem pode ser lida neste link:

sábado, 28 de setembro de 2013

EFSMA: presentes e ausentes

A. BA1, A. K. SOW1, M. DIAW1, A. SECK1, F. BA2, A. MBENGUE3, F. B. SARR3,
1Dakar (Senegal), 2Saint Louis (Senegal), 3Thies (Senegal)


Paris (France)

No show

1Thessaloniki (Greece), 2Ioannina (Greece), 3London (UK),
4EJU Didactic Committee

No show.

Kyiv (Ukraine)

1Paris (France), 2Bordeaux (France), 3Bagnolet (France), 4Pantin (France)

Roma (Italy)

Como eu disse outro dia: eu vim com o remo.

SJFT em judocas iranianos

sexta-feira, 27 de setembro de 2013

25 anos de judô

Hoje comemoro 25 anos de judô. Infelizmente não poderei treinar para celebrar por estar em um congresso, mas deixo registrado aqui meus agradecimentos aos meus professores: Aurélio Rosa e Solange Pessoa.

quinta-feira, 26 de setembro de 2013

Atleta de MMA morre antes da pesagem

As pessoas ficam surpresas...Eu fico surpreso de não acontecer com mais frequência...
Em 2012 desisti de prestar assessoria a um atleta de MMA porque considerei que ele poderia morrer perdendo peso. Estou cada vez mais convicto de que tem muito procedimento mal feito nas L/AM/MEC...Em pouco tempo o caso será esquecido por quem "organiza" os processos de perda de peso, os eventos e tudo mais...

Não leiam o texto abaixo, pois ele não contém protocolos "mágicos" para perda de peso:

quarta-feira, 4 de setembro de 2013

Comparando valores

Em matéria recentemente publicada no UOL foi divulgado que o Asley Gonzalez (Cuba, campeão mundial na categoria até 90 kg) recebe US$ 200/mês.
Por curiosidade fui ver quanto ganha o Rinner (França, campeão mundial na categoria acima de 100kg).
Não foi difícil encontrar:

Isso sim é usar bem a imagem de um grande campeão de judô...

Artigo no prelo sobre karate

Asian Journal of Sports Medicine 2013. 0(0):.

Physiological and perceived exertion responses during international karate kumite competition
Montassar Tabben, Rim Sioud, Monoem Haddad, Emerson Franchini, Anis Chaouachi, Karim Chamari, Claire Tourny-Chollet


Purpose: Investigate the physiological and perceived exertion responses of elite karate athletes and establish the relationship between a subjective method (Session-RPE) and two objective heart-rate (HR) based methods to quantify training-load (TL) during international karate competition.
Methods: Eleven karatekas took part in this study, but only data from seven athletes who completed three matches in a international tournament were used (mean±SD - four men, age 22.5±1.2-years, body mass 76.2±8.5-kg, %body-fat 7.5±1.6%, height 1.83±0.06-m, and competition experience 5±1-years; - three women, age 22.3±0.3-years, body mass 56.9 ± 6.9-kg, %body-fat 18.4 ± 4.6%, height 1.70±0.05-m, and competition experience 5±1-years). The data inclusion criteria were the successful measurement of HR, blood lactate [La-], and rating-of-perceived-exertion (RPE) across three matches during competition. Data from 21 combats were successfully recorded.
Results: Means total fights’ time, HR, %HRmax, [La-], and RPE were 4.7±1.6-min, 182±9-bpm, 91±3%, 9.02±2.12-mmol/L and 4.2±1.2, respectively. No significant differences in %HRmax, [La-], and RPE were observed across combats. Significant correlations were observed between RPE and both resting HR (r=0.60; P=0.004) and mean HR (r=0.64; P=0.02), session-RPE and Banister training impulse (TRIMP) (r=0.84; P<0.001) and Edwards TL (r=0.77; P<0.01). Banister TRIMP and Edwards TL were also correlated (r=0.95; P<0.001).
Conclusion: International karate competition elicited near-maximal cardiovascular responses, high blood lactate concentrations, but there was not any variation in competitors’ RPE, [La-] and %HRmax across combats. Karate coaches who seek to quantify competition loads could use the RPE-method as it has been shown to be correlated to both Banister TRIMP and Edwards TL.

Mundial de Judô 2013

Suposto suborno a Gonzalez

Algum dia, em algum lugar, as pessoas aprenderão que não existe uma relação linear entre desempenho competitivo e caráter

Tem campeão que é gente boa e tem campeão que ...
O problema é que normalmente as pessoas acreditam que os campeões são referências de conduta, sem analisar adequadamente uma série de comportamentos...

sábado, 24 de agosto de 2013

Violência como fonte de prazer ou desprazer

 2013 Aug 13;7:447. doi: 10.3389/fnhum.2013.00447. eCollection 2013.

Violence as a source of pleasure or displeasure is associated with specific functional connectivity with the nucleus accumbens.


Department of Psychology, The University of Chicago Chicago, IL, USA.


The appraisal of violent stimuli is dependent on the social context and the perceiver's individual characteristics. To identify the specific neural circuits involved in the perception of violent videos, forty-nine male participants were scanned with functional MRI while watching video-clips depicting Mixed Martial Arts (MMA) and Capoeira as a baseline. Prior to scanning, a self-report measure of pleasure or displeasure when watching MMA was collected. Watching MMA was associated with activation of the anterior insula (AI), brainstem, ventral tegmental area (VTA), striatum, medial, and lateral prefrontal cortex, orbitofrontal cortex, somatosensory cortex, and supramarginal gyrus. While this pattern of brain activation was not related to participants' reported experience of pleasure or displeasure, pleasurable ratings of MMA predicted increased functional connectivity (FC) seeded in the nucleus accumbens (NAcc) (a structure known to be responsive to anticipating both positive and negative outcomes) with the subgenual anterior cingulate cortex (ACC) and anterior insular cortex (AIC) (regions involved in positive feelings and visceral somatic representations). Displeasure ratings of MMA were related to increased FC with regions of the prefrontal cortex and superior parietal lobule, structures implicated in cognitive control and executive attention. These data suggest that functional connectivity is an effective approach to investigate the relationship between subjective feelings of pleasure and pain of neural structures known to respond to both the anticipation of positive and negative outcomes.

terça-feira, 6 de agosto de 2013

sexta-feira, 26 de julho de 2013

Estrutura temporal, RPE e respostas fisiológicas durante lutas de karate: comparação entre vencedores e vencidos

 2013 Jul 22. [Epub ahead of print]

Time-Motion Analysis, Physiological and Rate of Perceived Exertion Responses to Karate Official Combats: Is There a Difference Between Winners and Defeated Karatekas?


Research Unit, Analysis and Evaluation of factors affecting the sport performance, Higher Institute of Sports and Physical Education, Ksar said, Tunisia.


Purpose: The aim of this study was to measure and to compare physiological and time-motion variables during karate fighting's and to assess eventual differences between winners and defeated elite karatekas in an ecologically valid environment. Methods: Fourteen elite male karatekas who regularly participated in national and international events took part in a national-level competition. Results: There were no significant differences between winners and defeated karatekas regarding all the studied variables. Karatekas used more upper-limbs (76.19%) than lower-limbs' techniques (23.80%). The kisami-zuki represented the most frequent technique with 29.1% of all used techniques. The duration of each fighting activity ranged from <1 to 5 s, with 83.8±12.0% of the actions lasting less than 2-s. Karatekas executed 17±7 high-intensity actions per-fight, which corresponded to ~6 high-intensity actions per minute. Action-to-rest ratio was about 1:1.5 and high-intensity action-to-rest ratio was ~1:10. The mean blood lactate responses at 3-min post-combat (Lapost) elicited during karate fighting was 11.18±2.21 mmol.L-1 (difference between Lapre and Lapost = 10.01±1.81 mmol.L-1). Mean heart rate was 177±14 bpm (91±5 % of HRpeak). Karatekas spent 65% of the time exercising at HR>90% of the individual HRpeak. Conclusion: karatekas predominantly use upper-limbs' karate techniques. Karate's nature is intermittent with fighting activities representing ~6% of total combat's duration, with ~84% of actions lasting less than 2-s, and with approximately ~21-s mean time interval in-between. Kumite combats induced high blood lactate concentration and near maximal cardiovascular strain. Other key-success factors should be investigated to properly discriminate winners and defeated athletes.

quinta-feira, 25 de julho de 2013

Diferenças quanto à participação esportiva em 50 sociedades

Cross-Cultural Research

Volume 47, Issue 3, August 2013, Pages 268-309

Sex Differences in Sports Across 50 Societies

a  Department of Psychology, Grand Valley State University, 1 Campus Drive, Allendale, MI 49401, United States
b  University of Texas at El Paso, El Paso, TX, United States 


Sports have been frequently explored in cross-cultural studies, yet scant attention has been paid to female participation. Here we coded the occurrence of sports and related activities for males and females in the societies comprising the Human Relations Area Files (HRAF) probability sample. We then tested several predictions derived from evolutionary theory. As predicted, in all 50 societies with documented sports, there were more male sports than female sports; hunting and combat sports were almost exclusively male activities; and the sex difference in sports was greater in patriarchal than in nonpatriarchal societies. These results show that a robust sex difference in direct physical competition co-occurs with meaningful variation in its expression.