Tem gente que acha normal...

Dica do Tanner sobre o comportamentos dos treinadores japoneses junto às atletas:
http://www.biobiochile.cl/2013/01/30/judocas-del-equipo-olimpico-japones-fueron-golpeadas-con-sables-de-bambu-por-su-entrenador.shtml

Judocas del equipo olímpico japonés fueron golpeadas con sables de bambú por su entrenador

Miércoles 30 enero 2013 | 13:58 · Actualizado: 14:05

Publicado por Alberto Gonzalez | La Información es de Agencia AFP · 1366 visitas

Imagen: Thor Matthiasson (cc)

NOTICIAS RELACIONADAS

Judoca congoleño desaparecido en Londres tras los JJOO está “de vacaciones”

Japón espera que su récord de medallas ayude al país a reconstruirse tras tsunami del 2011

Un judoca y tres entrenadores congoleños desaparecen en Londres

El mundo del judo japonés está conmocionado tras conocerse que las componentes del equipo olímpico femenino eran maltratadas regularmente por su entrenador, que las golpeaba con sables de bambú y las aboteteaba.

El escándalo saltó después de que 15 jóvenes se decidieran a denunciar el mes pasado la manera de actuar de su entrenador ante el Comité Olímpico Japonés (COJ).

Las judocas, algunas de las cuales participaron en los Juegos Olímpicos de Londres-2012, acusaron a su entrenador Ryuji Sonoda de abofetearles y de golpearles con sables de bambú como los utilizados en la práctica del kendo, una modalidad de arte marcial.

“Hemos solicitado a la Federación Japonesa de Judo que investigue y tomar las medidas necesarias si se confirman los hechos”, declaró este miércoles un responsable del COJ.

El presidente de la Federación de Judo, Koshi Onozawa aseguró que Sonoda y otros entrenadores admitieron los hechos y que fueron advertidos por el organismo.

“El pasado mes de septiembre, recibimos informaciones sobre el hecho de que Sonoda hubiese podido maltratar físicamente a sus atletas. Le interrogamos, al igual que a las deportistas, y se demostró que las acusaciones estaban fundadas”, declaró Onozawa en conferencia de prensa.

Los agresores fueron advertidos por la federación, pero no suspendidos, y amenazados con “sanciones más fuertes si se repetían tales hechos”, añadió Onozawa.

Estas informaciones se conocen semanas después del suicidio de un estudiante que era regularmente maltratado por su entrenador de básquetbol.

Según un informe publicado en enero de 2011, cada año mueren en Japón cuatro niños durante los entrenamientos de judo.

Desenvolvimento de protetor de tórax para o TKD

http://biolsport.com/fulltxt.php?ICID=1029822

Análise de capacetes no TKD

Br J Sports Med. 2013 Jan 24. [Epub ahead of print]

Safety performance evaluation of taekwondo headgear.

O'Sullivan DM, Fife GP, Pieter W, Shin I.

Source

Department of Physical Education, Chung-Ang University, Anseong, Republic of Korea.

Abstract

BACKGROUND:

With over 20 years of taekwondo concussion research highlighting the high incidence of injury, previous studies recommend an investigation of headgear impact attenuation performance.

OBJECTIVE:

To examine impact attenuation differences between the anterior, posterior and sides of selected taekwondo headgear brands.

DESIGN:

Between-groups.

SETTING:

Biomechanics laboratory.

METHODS:

Five different commercially available taekwondo headgear were selected for impact testing. A 50th percentile Hybrid II Dummy Crash Test head and neck was fitted with the selected helmet and was bolted to a 25 kg steel torso-like structure. Each headgear model was impacted eight times to the anterior, posterior and sides by a 6.75 kg bowling ball at three heights to produce 52.25, 85 and 144 J strikes.

MAIN OUTCOME MEASUREMENTS:

Resultant head linear acceleration.

RESULTS:

Two-way (Helmet×Location) mixed analysis of variance with repeated measures on the second factor was performed to determine the differences between headgear by location of impact. There was a two-way (Helmet×Location) interaction for acceleration (η(2)=0.368).

CONCLUSIONS:

Taekwondo headgear manufacturers and sport governing bodies must consider improving the design of especially anterior helmet properties.

Genética e judô

Int J Sports Physiol Perform. 2013 Jan 23. [Epub ahead of print]

ACTN3 R577X Polymorphism is not Associated with Elite Judo Athletic Status.

Rodríguez-Romo G, Yvert T, de Diego A, Santiago C, Díaz de Durana AL, Carratalá V, Garatachea N, Lucia A.

Source

INEF, Universidad Politécnica de Madrid, Spain.

Abstract

We compared ACTN3 R577X genotype/allele frequencies in the majority of all-times best Spanish judo male athletes (n=108) and 343 ethnically-matched non-athletic men. No between-group differences were found in allele (P=0.077) or genotype distributions (P=0.178). Thus, the R577X polymorphism was not significantly associated with the status of being an elite judo athlete, at least in the Spanish population. The contribution of genetics to sports-related phenotype traits is undeniable with some genotypes, of which ACTN3 R577X is currently the leading candidate, partly allowing to distinguish individuals predisposed to either 'endurance' or more 'power' sports. However, few athletic events can be categorized as 'purely' power or endurance-based. Although genetic testing (i.e. of ACTN3 R577X) is already being marketed to predict sports talents and potentials of young children, its usefulness is still questionable, at least in competitive judo.

Prevenção de quedas em crianças

Br J Sports Med. 2013 Jan 17. [Epub ahead of print]

Prevention of fall-related injuries in 7-year-old to 12-year-old children: a cluster randomised controlled trial.

Nauta J, Knol DL, Adriaensens L, Klein Wolt K, van Mechelen W, Verhagen EA.

Source

Department of Public and Occupational Health, EMGO Institute for Health and Care Research, VU University Medical Center, Amsterdam, The Netherlands.

Abstract

INTRODUCTION:

To counteract the recently observed increase in forearm fractures in children worldwide, an educational programme to improve fall skills was developed. In this 8-week programme children learned basic martial arts falling techniques in their physical education classes. In this study, the effectiveness of this educational programme to improve fall skills was evaluated.

METHODS:

A cluster randomised controlled trial was conducted in 33 primary schools. The intervention group received the educational programme to improve falling skills during their physical education (PE) classes whereas the control group received their regular PE curriculum. At baseline (October 2009) and follow-up (May 2010), a questionnaire was completed by the children about their physical activity behaviours. Furthermore, fall-related injuries were registered continuously during an entire school-year.

RESULTS:

A total of 36 incident injuries was reported in the intervention group, equalling an injury incidence density (IID) of 0.14 fall-related injuries per 1000 h of physical activity (95% CI 0.09 to 0.18). In contrast, 96 injuries were reported by the control group corresponding to an IID of 0.26 (95% CI 0.21 to 0.32). However, because intracluster correlation was high (ICC=0.46), differences in injury incidence were not statistically significant. When activity level was taken into account, a trend was shown suggesting that the 'falling is a sport' programme was effective in decreasing falling-related injury risk, but only in the least active children.

DISCUSSION AND CONCLUSION:

Although results did not reach significance because of strong clustering effects, a trend was found suggesting that a school-based educational programme to improve falling skills may be more beneficial for the prevention of falling-related injuries in children with low levels of habitual physical activity.

Para reflexão

O problema era a "pegada na perna". Fizeram as restrições e o percentual de ippon despencou. Com certeza é muito mais bonito verem as lutas terminarem com duas punições a uma do que ver alguém ser projetado de tê-guruma : )
Agora fizeram uma reunião de uma tarde e mudaram de novo as regras.
Como a charge indica, tem sempre algo atrás das mudanças, que muitas vezes não passam pela melhoria do judô (nem para quem assiste e muito menos para quem luta).

Análise técnica e tática e respostas fisiológicas ao boxe

Int J Sports Physiol Perform. 2013 Jan;8(1):84-91.

Amateur boxing: activity profile of winners and losers.

Davis P, Wittekind A, Beneke R.

Source

Centre for Sport and Exercise Science, University of Essex, Essex, UK.

Abstract

An activity profile of competitive 3 × 2-min novice-level amateur boxing was created based on video footage and postbout blood [La] in 32 male boxers (mean ± SD) age 19.3 ± 1.4 y, body mass 62.6 ± 4.1 kg. Winners landed 18 ± 11 more punches than losers by applying more lead-hand punches in round 1 (34.2 ± 10.9 vs 26.5 ± 9.4), total punches to the head (121.3 ± 10.2 vs 96.0 ± 9.8), and block and counterpunch combinations (2.8 ± 1.1 vs. 0.1 ± 0.2) over all 3 rounds and punching combinations (44.3 ± 6.4 vs 28.8 ± 6.7) in rounds 1 and 3 (all P < .05). In 16 boxers, peak postbout blood [La] was 11.8 ± 1.6 mmol/L irrespective of winning or losing. The results suggest that landing punches requires the ability to maintain a high frequency of attacking movements, in particular the lead-hand straight punch to the head together with punching combinations. Defensive movements must initiate a counterattack. Postbout blood [La] suggests that boxers must be able to tolerate a lactate production rate of 1.8 mmol · L-1 · min-1 and maintain skillful techniques at a sufficient activity rate.