Perfil dos atletas de taekwondo em Beijing

J Can Chiropr Assoc. 2010 Dec;54(4):243-9.
A profile of 2008 Olympic Taekwondo competitors.
Kazemi M, Perri G, Soave D.
Associate Professor, Canadian Memorial Chiropractic College, Toronto, Ontario, Canada; email: mkazemi@cmcc.ca.

Abstract

The purpose of this study was to identify the characteristics of Olympic medal winners (gold, silver, bronze) who competed in the 2008 Beijing Olympic Games and compare these characteristics to those who competed but did not earn medals. We have also descriptively analysed the 2008 data in comparison to the 2004 data (Kazemi et al., 2009), and 2000 data (Kazemi et al., 2006) and summarized changes that were identified. This study as well as the last two studies did not find any statistically significant differences between winners and non-winners with regards to average age, weight, height and BMI. There are, however, some trends that were observed. Female winners were slightly younger, shorter, with greater BMI's versus non-winners. There was a significant decrease in frequency of warnings from 2004 to 2008. Unlike 2004, the 2008 Olympic Taekwondo competitors used more defensive kicks to score. These suggest a shift from aggressive tactics to score to a more conservative one.

Suplementação de ácidos graxos e estresse oxidativo em judocas

Int J Sport Nutr Exerc Metab. 2010 Dec;20(6):496-506.

Effect of 6 Weeks of n-3 Fatty-Acid Supplementation on Oxidative Stress in Judo Athletes.
Filaire E, Massart A, Portier H, Rouveix M, Rosado F, Bage AS, Gobert M, Durand D.

Unité de Formation en Sciences et Techniques des Activités Physiques et Sportives, Orleans, France.

Abstract

The aim of this investigation was to assess the effects of 6 wk of eicosapentanoic acid (EPA) and docosahexanoic acid (DHA) supplementation on resting and exercise-induced lipid peroxidation and antioxidant status in judoists. Subjects were randomly assigned to receive a placebo or a capsule of polyunsaturated fatty acids (PUFAs; 600 mg EPA and 400 mg DHA). Blood samples were collected in preexercise and postexercise conditions (judo-training session), both before and after the supplementation period. The following parameters were analyzed: α-tocopherol, retinol, lag phase , maximum rate of oxidation (Rmax) during the propagating chain reaction, maximum amount of conjugated dienes (CDmax) accumulated after the propagation phase, nitric oxide (NO) and malondyaldehide (MDA) concentrations, salivary glutathione peroxidase activity, and the lipid profile. Dietary data were collected using a 7-day dietary record. A significant interaction effect between supplementation and time (p < .01) on triglycerides was noted, with values significantly lower in the n-3 long-chain-PUFA (LCPUFA) group after supplementation than in the placebo group. Significant interaction effects between supplementation and time on resting MDA concentrations and Rmax were found (p = .03 and p = .04, respectively), with elevated values in the n-3 LCPUFA group after supplementation and no change in the placebo group's levels. The authors observed a significantly greater NO and oxidative-stress increase with exercise (MDA, Rmax, CDmax, and NO) in the n-3 LCPUFA group than with placebo. No main or interaction effects were found for retinol and α-tocopherol. These results indicate that supplementation with n-3 LCPUFAs significantly increased oxidative stress at rest and after a judo-training session.

Enquanto isso, em Bruxelas...

Dica do Fabrício:
©Journal of Sports Science and Medicine (2010) 9, 528-537

http://www.jssm.org/vol9/n4/1/v9n4-1pdf.pdf
Received: 20 May 2010 / Accepted: 06 August 2010 / Published (online): 01 December 2010
The social-psychological outcomes of martial arts practise among youth: A review
Jikkemien Vertonghen 􀀍 and Marc Theeboom
Vrije Universiteit Brussel, Belgium
Abstract

Martial arts involvement among the youth has been described in controversial terms. Studies regarding the effects of martial arts practise on youth show contrasting images. While some refer to enhanced personal and social opportunities for those that participate, others warn against increased levels of aggressiveness and antisocial behavior among its participants. The aim of the present review is to provide, firstly, an overview of the major findings of studies concerning the social-psychological outcomes of martial arts practise. Secondly, the limitations of those studies are discussed. From more than 350 papers, collected during a two-year lasting literature study, 27 papers met all criteria to be included in this study. This review revealed that even though a considerable amount of research on socialpsychological outcomes of martial arts practise has been conducted over the years, to date, it has not brought clarity in the existing duality regarding the possible effects of martial arts involvement. It is proposed that a better understanding can be provided if specific influential factors are taken into account in future research (i.e., participants’ characteristics, type of guidance, social context and structural qualities of the sport).

Exame Geral de Qualificação

Características morfo-funcionais e demanda energética em situação simulada de luta em atletas de taekwondo
Candidato: Fábio Angioluci Diniz Campos
Comissão Examinadora:
Presidente: Prof. Dr. Emerson Franchini
Membros Titulares:
Profa. Dra. Maria Augusta Peduti Dal'Molin Kiss (EEFE-USP)
Prof. Dr. Luiz Cláudio Reeberg Stanganelli (UEL)
Membros suplentes:
Prof. Dr. Alexandre Moreira (EEFE-USP)
Prof. Dr. Antonio Carlos Dourado (UEL)
Local: sala 57 da EEFE-USP
Data: 17/12/2010
Horário: 14h

Jogos Olímpicos, Jogos Olímpicos da Juventude e Jogos Olímpicos da Infância?

Para reflexão...
Links enviados pela Paula Avakian:
http://www.youtube.com/watch?v=YkGPsoB338I&feature=player_embedded
http://www.youtube.com/watch?v=ytoJY66Jqh8&feature=related
http://www.youtube.com/watch?v=6FdWLU6Npq8&feature=related

Apresentação na Convenção de Artes Marciais e Modalidades Esportivas de Combate

https://docs.google.com/viewer?a=v&pid=explorer&chrome=true&srcid=0B6F18t_8Glc7YTVhMjBhM2QtNWI0YS00NTRmLTkxOGEtNTM2Y2Y4MTU4YTQw&hl=en&authkey=CJPnp0A

Artigo sobre pegada no judô

International Journal of Performance Analysis in Sport, 2010, 10, 229-240.
Modeling of grasps in judo contests

Michel Calmet1,2, Bianca Miarka2 and Emerson Franchini2
1 Montepellier University, France
2 Martial Arts and Combat Sports Research Group, School of Physical Education and
Sport, University of São Paulo, Brazil

Abstract

In judo, the two contestants get close to each other, perform their grasps, move on the mat and attack. The approaches and kumi-kata (grip technique) give way to specific behaviors between the two contestants. The briefness and the capacity of simultaneous actions, the multiple interactions and the result at stake result in a complex system that is most of the time clarified by the coach to the contestant. A computerized observation may help to highlight some actions associated to success from that complex system. The winners of 35 contests were analyzed (9 beginners, 16 intermediate levels, and 10 experts) through their behaviors (approaches and kumi-kata) and positions. The results enable experts to assume lengths (15.8±9.5s) and amount (9±6) of the combat phases (lapse of time between beginning and stop, announced by the referee) similar to the other two groups. Beginners approach each other with much care and precision, mainly holding their opponents with both hands for the projection. The percentage of total time spent by beginners and experts grabbing the opponent’s judogi with both hands, attack and throw was 86% and 24%, respectively, indicating a much lower time spent between grip contact and technique application in experts compared to beginners.