Sobre apresentações

É longo, mas vale a pena.
Quem não tem tempo, recomendo ver os três últimos minutos.
http://www.youtube.com/watch?feature=player_embedded&v=dH2DmQZpn5c#t=41s

Artigo sobre desenvolvimento de talentos no judô

Judocas olímpicos brasileiros: fatores de apoio psicossocial para o desenvolvimento do talento esportivo
 
Marcelo MASSA*

Rudney UEZU**/***
Maria Tereza Silveira BÖHME**
Resumo

Embora no Brasil o judô possua tradição olímpica, pouco se conhece sobre os aspectos que contribuem para o desenvolvimento do talento no cenário nacional. Sendo assim, o objetivo do presente estudo foi analisar os fatores de apoio psicossocial presentes no desenvolvimento de judocas brasileiros talentosos do sexo masculino. Para tanto, se utilizou uma amostra de seis judocas, pertencentes à seleção brasileira nos Jogos Olímpicos de Atenas, 2004. A pesquisa foi constituída através de um delineamento qualitativo, que utilizou como instrumento uma entrevista composta por três perguntas abertas. Para a análise dos resultados foi utilizado o “Discurso do Sujeito Coletivo”. Os discursos indicaram a importância dos fatores relacionados : a) ao apoio da família; b) ao prazer pela prática; e c) a determinação dos judocas, corroborando com a literatura internacional no que tange a relevância dos fatores psicossociais para o desenvolvimento do talento em diferentes domínios do conhecimento.

 
http://www.scielo.br/pdf/rbefe/v24n4/a05v24n4.pdf

Lesões em atletas de karate e jiu-jitsu

SOUZA, José Mario Couto de et al. Lesões no Karate Shotokan e no Jiu-Jitsu: trauma direto versus indireto. Rev Bras Med Esporte [online]. 2011, vol.17, n.2, pp. 107-110. ISSN 1517-8692. doi: 10.1590/S1517-86922011000200007.
INTRODUÇÃO: Artes marciais como Karate e Jiu-Jitsu têm uma origem comum, porém apresentam biomecânica de movimento distintas. O Karate Shotokan tem como principal característica os golpes de impacto, já o Jiu-Jitsu utiliza projeções, estrangulamentos, torções e imobilizações. Estas diferenças poderiam promover diferentes locais de lesão. OBJETIVO: Verificar a frequência de lesões no Karate e no Jiu-Jitsu e comparar estas lesões entre os dois grupos estudados. MÉTODOS: Avaliou-se transversalmente, através de questionário aberto/fechado, 94 atletas dos três níveis de competição: internacional, nacional e estadual. Dados sobre idade de início e tempo de treino também foram avaliados. Para a comparação entre os grupos utilizou-se o teste t de student e o teste do Qui-quadrado. As diferenças foram consideradas significativas quando p < 0,05. RESULTADOS: 148 lesões foram relatadas em uma amostra de 53 Karatecas e 160 lesões em 41 atletas de Jiu-Jitsu. O local de maior incidência de lesão no Karate foram as mãos e dedos (15,5%) e no Jiu-Jitsu foi o joelho (16,3%). Os locais que apresentaram diferenças significativas entre os dois grupos foram: perna (0,042), boca e dentes (0,028), pescoço (0,038), ombro (0,000), cotovelo (0,001), joelho (0,000), tornozelo (0,015), orelha (0,000). CONCLUSÃO: Karate e Jiu-Jitsu apresentam diferenças quanto à frequência e incidência de locais de lesão. Estes achados contribuem para a elaboração de condutas preventivas e terapêuticas específicas a cada esporte.
Palavras-chave : lesão; artes marciais; esporte; reabilitação.
http://www.scielo.br/pdf/rbme/v17n2/v17n2a07.pdf

Judô I: aspectos psicológicos do judô

https://docs.google.com/viewer?a=v&pid=explorer&chrome=true&srcid=0B6F18t_8Glc7ZjU3MTUxYzgtODBjZC00NWFmLWEzMjQtZTg2MTY0NGIyZjY1&hl=en_US&authkey=CIHMzpMO

Imunidade da mucosa e atividade antioxidante durante treinamento intensivo e perda de peso em atletas de TKD

Dica do Fabrício
Changes of mucosal immunity and antioxidation activity in elite male Taiwanese taekwondo athletes associated with intensive training and rapid weight loss

M-L Tsai1, K-M Chou1, C-K Chang2, S-H Fang1
1Institute of Athletics, National Taiwan Sport University, Taichung, Taiwan
2Sport Science Research Center, National Taiwan Sport University, Taichung, Taiwan

Abstract
Objective The aim of this study was to investigate the cumulative effects of prolonged, intensive training and rapid weight loss on immunological parameters and antioxidation activity of elite male Taiwanese taekwondo athletes.
Design 16 Elite male taekwondo athletes (mean age, 21.6 (1.3) years; mean height, 173.7 (5.5) cm) volunteered to participate in this study. Beginning at 30 days before a national competition, saliva samples were obtained during a 7-week training, the competition and the postcompetition period. Levels of salivary IgA, cortisol, lactoferrin and free-radical scavenging activity were measured at 30-, 14-, 7- and 1-day precompetition and 1-, 7- and 19-day postcompetition. Body weight and body fat were also recorded.
Results The mean body weight was notably decreased during the week immediately before the competition. Results reveal that the levels of salivary IgA were differentially regulated during the training, competition and recovery period, while the salivary cortisol and lactoferrin concentrations and free-radical scavenging activity were not appreciably affected during the training and the competition period. Furthermore, the results of an upper respiratory tract infection incidence indicate that following the decreases of mucosal immunity, the risk of acquiring infection was significantly increased.
Conclusions Our results demonstrated that mucosal immunity in elite male taekwondo athletes is modulated by exercise and rapid weight reduction during the training, competition and recovery period. Cumulative effects of prolonged intensive training and rapid weight reduction suppressed mucosal immunity. Furthermore, because of the “open window” of impaired immunity during the precompetition period, the incidence of upper respiratory tract infection was significantly increased after the competition.

Tempo de reação em boxeadores

J Sports Med Phys Fitness. 2011 Jun;51(2):292-8.
Baseline simple and complex reaction times in female compared to male boxers.
Bianco M, Ferri M, Fabiano C, Giorgiano F, Tavella S, Manili U, Faina M, Palmieri V, Zeppilli P.
Sports Medicine Department, Catholic University, Rome, Italy - massimiliano.bianco@fastwebnet.it.
Abstract

AIM: The aim of the study was to compare baseline cognitive performance of female in respect to male amateur boxers. METHODS. Study population included 28 female amateur boxers. Fifty-six male boxers, matched for age, employment and competitive level to female athletes, formed the control group. All boxers had no history of head concussions (except boxing). Each boxer was requested to: 1) fulfill a questionnaire collecting demographic data, level of education, occupational status, boxing record and number of head concussions during boxing; 2) undergo a baseline computerized neuropsychological (NP) test (CogSport) measuring simple and complex reaction times (RT).

RESULTS: Female were lighter than male boxers (56±7 vs. 73.1±9.8 kg, P<0.0001). No significant differences at CogSport scores were observed between groups. Male boxers showed a longer simple-RT at the end of the NP battery than at the beginning (0.247±0.007 vs. 0.243±0.007 s, P=0.02), however, with a significant lower rate of mistakes (0.7±1.6 vs. 2.0±3.1%, P=0.005), observed also in the female group (0.5±1.1 vs. 2.2±3.0%, P=0.005). No boxing activity parameter (record, number of knock-outs, etc.) correlated with NP scores.

CONCLUSION: Female and male Olympic-style boxers have no (or minimal) differences in baseline cognitive performance. Further research with larger series of female boxers is required to confirm these findings.

Artigo sobre a importância do lutar no processo evolutivo

Commun Integr Biol. 2011 Mar;4(2):163-70.

The society of our "out of Africa" ancestors (I): The migrant warriors that colonized the world.
Moreno E.
University of Bern; Bern, Switzerland.

Abstract
The "out of Africa" hypothesis proposes that a small group of Homo sapiens left Africa 80,000 years ago, spreading the mitochondrial haplotype L3 throughout the Earth.1-10 Little effort has been made to try to reconstruct the society and culture of the tribe that left Africa to populate the rest of the world.1 Here, I find that hunter-gatherers that belong to mitochondrial haplotypes L0, L1 and L2 do not have a culture of ritualized fights. In contrast to this, almost all L3 derived hunter-gatherers have a more belligerent culture that includes ritualized fights such as wrestling, stick fights or headhunting expeditions. This appears to be independent of their environment because ritualized fights occur in all climates, from the tropics to the arctic. There is also a correlation between mitochondrial haplotypes and warfare propensity or the use of murder and suicide to resolve conflicts. The data implicate that the original human population outside Africa is descended from only two closely related sub-branches that practiced ritual fighting and had a higher propensity towards warfare and the use of murder for conflict resolution. This warfare culture may have given the out of Africa migrants a competitive advantage to colonize the world. But it could also have crucially influenced the subsequent history of The Earth. In the future, it would be interesting to see how we could further reconstruct the society and culture of the "Out of Africa Tribe."
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3104569/pdf/cib0402_0163.pdf