Compilação de situações em que a queda é evitada no judô

http://www.youtube.com/watch?v=fu_oLMJarWY&feature=player_embedded

IJF apresenta simulação do sistema de classificação olímpica

http://217.79.182.227/www.judo-world.net/_ranking/tta_qualification.php?nation_field=&action=Show

Para não precisar das vagas continentais, os atletas estariam nos Jogos Olímpicos com 224 a 280 pontos e as atletas precisariam de 290 a 428 pontos, dependendo da categoria. Portanto, caso essa média de pontos seja mantida (o que deve acontecer) e a menos que haja um outro atleta do mesmo país melhor posicionado, um título de Grand Slam e um de World Cup no ano final de classificação será suficiente para participar dos Jogos Olímpicos na maior parte das categorias.

Para inspirar aqueles que querem fazer pesquisa (to inspire those who want to do research) : )

http://www.youtube.com/watch?v=Fl4L4M8m4d0&feature=player_embedded

Dica do Paulo Panisi

Mais um artigo sobre suplementação e processo antioxidante no judô

Eur J Appl Physiol. 2011 Jan 11. [Epub ahead of print]


Effects of 6 weeks of n-3 fatty acids and antioxidant mixture on lipid peroxidation at rest and postexercise.

Filaire E, Massart A, Rouveix M, Portier H, Rosado F, Durand D.

Laboratoire CTI Inserm 658, UFRSTAPS, 2 allée du Château, BP 6237, 45062, Orléans Cedex, France, edith.filaire@univ-orleans.fr.

Abstract

The purpose of this randomized study was to measure the influence of 6 weeks of LCPUFA (600 mg EPA and 400 mg DHA per day) supplementation alone or in association with 30 mg vitamin E, 60 mg vitamin C and 6 mg β-carotene on resting and exercise-induced lipid peroxidation in judoists (n = 36). Blood samples were collected at rest before (T (1)) and after the supplementation period, in preexercise (T (2)) and postexercise (T (3)) conditions, for analysis of α-tocopherol, retinol, lag phase (Lp) before free radical-induced oxidation, maximum rate of oxidation (R (max)) during the propagating chain reaction, maximum amount of conjugated dienes (CD(max)) accumulated after the propagation phase, and nitric oxide, malondialdehyde and lipoperoxide (POOL) concentrations. Dietary data were collected using a 7-day diet record. There were no significant differences among treatment groups with respect to habitual intakes of energy from fat, carbohydrate, or protein. At T (1), there were no significant differences among treatment groups with respect to lipid peroxidation, lag phase, and levels of α-tocopherol or retinol. The consumption of an n-3 LC PUFA supplement increased oxidative stress at rest and did not attenuate the exercise-induced oxidative stress. The addition of antioxidants did not prevent the formation of oxidation products at rest. On the contrary, it seems that the combination of antioxidants added to the n-3 LCPUFA supplement led to a decrease in, CD(max), R (max), and POOL and MDA concentrations after a judo training session.

Artigo acadêmico com discussão sobre a proibição do mma no Canadá

http://www.cma.ca/multimedia/staticContent/HTML/N0/l2/cjs/vol-54/issue-1/pdf/pgE1.pdf

Fim das equipes competitivas de judô

Em menos de um mês, três equipes de judô "fecharam as portas": GR Barueri, AD São Caetano e FTC. Algo realmente preocupante, considerando que estamos a um ano e meio dos Jogos Olímpicos e a dois e meio de um Campeonato Mundial em SP. Duas delas eram de prefeituras na região metropolitana de SP e possuíam atletas na seleção brasileira ou na seletiva que acontecerá neste final de semana. Adicionalmente, essas três equipes disputaram o GP Nacional, sendo que uma foi campeã e a outra quarto lugar.
Será esse o legado dos megaeventos no país? Para refletir...

Perfil fisiológico de atletas de judô de elite

Sports Med. 2011 Feb 1;41(2):147-66. doi: 10.2165/11538580-000000000-00000.
Physiological profiles of elite judo athletes.
Franchini E, Del Vecchio FB, Matsushigue KA, Artioli GG.
Martial Arts and Combat Sports Research Group, School of Physical Education and Sport, University of So Paulo, So Paulo, Brazil.

Abstract

To be successful in international competitions, judo athletes must achieve an excellent level of physical fitness and physical condition during training. This article reviews the physiological profiles of elite judo athletes from different sex, age and weight categories. Body fat is generally low for these athletes, except for the heavyweight competitors. In general, elite judo athletes presented higher upper body anaerobic power and capacity than non-elite athletes. Lower body dynamic strength seems to provide a distinction between elite and recreational judo players, but not high-level judo players competing for a spot on national teams. Even maximal isometric strength is not a discriminant variable among judo players. However, more studies focusing on isometric strength endurance are warranted. Although aerobic power and capacity are considered relevant to judo performance, the available data do not present differences among judo athletes from different competitive levels. Typical maximal oxygen uptake values are around 50-55 mL/kg/min for male and 40-45 mL/kg/min for female judo athletes. As for other variables, heavyweight competitors presented lower aerobic power values. The typical differences commonly observed between males and females in the general population are also seen in judo athletes when analysing anaerobic power and capacity, aerobic power, and maximal strength and power. However, further research is needed concerning the differences among the seven weight categories in which judo athletes compete.

Respostas físicas à luta de TKD

Vamos combinar que preensão manual no TKD não é muito relevante, mas a PPA resultante da luta é interessante.

J Strength Cond Res. 2011 Jan 12. [Epub ahead of print]

Effects of Official Taekwondo Competitions on All-Out Performances of Elite Athletes.
Chiodo S, Tessitore A, Cortis C, Lupo C, Ammendolia A, Iona T, Capranica L.
1Experimental and Clinical Medicine Department, University of Magna Graecia, Catanzaro, Italy; 2Italian Taekwondo Federation, Rome, Italy; and 3Department of Human Movement and Sport Sciences, University of Rome Foro Italico, Rome, Italy.

Abstract
Chiodo, S, Tessitore, A, Cortis, C, Lupo, C, Ammendolia, A, Iona, T, and Capranica, L. Effects of official Taekwondo competitions on all-out performances of elite athletes. J Strength Cond Res 25(x): 000-000, 2011-This study investigated physiological and performance aspects of 15 (4 women and 11 men) elite Taekwondo athletes (24.0 ± 5.7 years) during their National Championship. The load of the competition was evaluated by means of heart rate (HR) and blood lactate (La). Pre and postmatch countermovement jump (CMJ), and handgrip performances were compared (p < 0.05). The match imposed a high load (HR > 85% of individual HRmax = 92 ± 12%; La = 6.7 ± 2.5 mmol·L) on athletes. After the match, better (p < 0.0001) CMJ (men: 43.9 ± 5.2 cm; women: 30.8 ± 2.3 cm) and worst (p = 0.006) handgrip performances (men: 459 ± 87 N; women: 337 ± 70 N) were found with respect to prematch ones (CMJ: men = 40.8 ± 4.9 cm, women = 28.2 ± 2.5 cm; handgrip: men = 486 ± 88 N, women: 337 ± 70 N). Results indicate that the intermittent activity of the Taekwondo competition elicits a high neuromuscular activation of the lower limbs. Instead, the decreases in grip strength could be because of the repeated concussions on the upper limbs used to protect from the opponent's kicks and punches directed toward the scoring area of the torso. Practically, these results urge coaches to structure training sessions that enable athletes to maintain their upper limb strength during their match.

Treino de TKD e organização postural

Eur J Appl Physiol. 2011 Jan 11. [Epub ahead of print]

Low-level Taekwondo practitioners have better somatosensory organisation in standing balance than sedentary people.
Leong HT, Fu SN, Ng GY, Tsang WW.
Department of Rehabilitation Sciences, Hong Kong Polytechnic University, Hung Hom, Hong Kong (SAR), China.
Abstract

Sports training, especially for those requiring fast and skilled movements have been reported to improve one's postural control, but the underlying sensory integration mechanism is unknown. The purpose is to explore the sensory organisation strategies for maintaining standing balance in Taekwondo practitioners, and to examine the quasi-static and dynamic balance performance in subjects with and without TKD training. Case-control study was used as a study design. Eleven subjects with low level of Taekwondo training for 1-3 years, and eleven sedentary healthy subjects were assessed with the sensory organisation tests (SOT) under six visual and somatosensory input conditions and their balance upon landing from self- or operator-triggered drop test with the eyes closed condition. The SOT measured the equilibrium scores, whereas the drop test assessed the time to stabilisation (TTS), normalised peak force and distance of antero-posterior and medial-lateral centre of pressure on landing. Results for the SOT test revealed that Taekwondo subjects performed better during stance with eyes closed on a fixed support than the untrained group (p = 0.011). For the drop tests, the untrained group was slower in postural correction as revealed by the longer TTS than the Taekwondo group after the operator-triggered drops (p = 0.018). All subjects had a larger normalised peak force in operator-triggered than self-triggered drops. In conclusion, we observed that people with low-level Taekwondo training have better balance performance than untrained subjects as shown in the SOT results and shorter TTS with the drop test. They may rely more on the somatosensory and vestibular inputs for maintaining balance. People with balance problems may benefit from Taekwondo training.

Fatores físicos preditores de sucesso no wrestling

Eur J Appl Physiol. 2011 Jan 9. [Epub ahead of print]
Physical fitness factors to predict male Olympic wrestling performance.
García-Pallarés J, López-Gullón JM, Muriel X, Díaz A, Izquierdo M.
Exercise Physiology Laboratory at Toledo, University of Castilla-La Mancha, Toledo, Spain, jesus.garcia.pallares@gmail.com.

Abstract

To determine differences in maximal strength and muscle power output of the arm and leg extensor muscles, peak and mean power during a modified standing crank-arm Wingate test, running speed, muscle extensibility, and anthropometric markers between elite and amateurs wrestlers according to the weight classes system; 92 male wrestlers were assigned into 6 groups according to their body mass (light, middle and heavy weight) and their competitive level (elite and amateur): Light Weight (body mass ranged between 55 and 68 kg) in elite (LW(E), n = 18) and amateur (LW(A), n = 15) level; Middle Weight (body mass ranged between 68 and 84 kg) in elite (MW(E), n = 18) and amateur (MW(A), n = 19) level; and Heavy Weight (body mass ranged between 84 and 100 kg) in elite (HW(E), n = 10) and amateur (HW(A), n = 12) level. Elite wrestlers were older (8-12%), had more training experience (25-37%), fat-free mass (3-5%), maximal strength in absolute and relative terms (8-25%), muscle power (14-30%), mean and peak power during crank-arm Wingate testing in absolute and relative terms (13-22%), jumping height (8-17%) as well as grip (6-19%) and back strength (7-20%) compared to amateur wrestlers. However, no differences were observed between elite and amateur groups in height, body mass index, percentage of body fat, hamstring extensibility and running speed. The present results suggest that the higher absolute and relative values of maximal strength, muscle power, and anaerobic metabolism, explained in part by the differences in lean mass and neural activation patterns, will give elite wrestlers a clear advantage during the most frequently used techniques in Olympic wrestling.

Uma abordagem ligeiramente diferente para tratar os dados por categoria pode ser vista em artigo com atletas de judô:

http://biolsport.com/fulltxt.php?ICID=891400

Artigo sobre perfil fisiológico de atletas de mma

http://versita.metapress.com/content/g2569k3304147510/fulltext.pdf

Consumo de oxigênio durante exercícios de boxe

VO2 REQUIREMENTS OF BOXING EXERCISES

ERIC ARSENEAU, SAI¨D MEKARY, AND LUC A. LE ´ GER

Department of Kinesiology, University of Montreal, Montreal, Canada Arseneau, E, Mekary, S, and Le´ger, LA. _ VO2 requirements of boxing exercises. J Strength Cond Res XX(X): 000–000, 2011—The
purpose of this study was to quantify the physiological requirements of various boxing exercises such as sparring, pad work, and punching bag. Because it was not possible to measure the oxygen uptake (VO2) of ‘‘true’’ sparring with a collecting gas valve in the face, we developed and validated a method to measure VO2 of ‘‘true’’ sparring based on ‘‘postexercise’’ measurements. Nine experienced male amateur boxers (Mean 6 SD: age = 22.0 ± 3.5 years, height = 176.0 ± 8.0 cm, weight = 71.4 ± 10.9 kg, number of fights = 13.0 ± 9.5) of regional and provincial level volunteered to participate in 3 testing sessions: (a) maximal treadmill test in the LAB, (b) standardized boxing training in the GYM, and (c) standardized boxing exercises in the LAB. Measures of VO2, heart rate (HR), blood lactate concentration [LA], rated perceived exertion level, and punching frequencies were collected. VO2 values of 43.4 ± 5.9, 41.1 ± 5.1, 24.7 ±
6.1, 30.4 ± 5.8, and 38.3 ± 6.5 ml.kg1.min1 were obtained, which represent 69.7 ± 8.0, 66.1 ± 8.0, 39.8 ± 10.4, 48.8 ± 8.5, and 61.7 ± 10.3%VO2peak for sparring, pad work, and punching bag at 60, 120, and 180 b.min1, respectively. Except for lower VO2 values for punching the bag at 60 and 120 b.min1 (p < 0.05), there was no VO2 difference between exercises. Similar pattern was obtained for %HRmax with respective values of 85.5 ± 5.9, 83.6 ± 6.3, 67.5 ± 3.5, 74.8 ± 5.9, and 83.0 ± 6.0. Finally, sparring %HRmax and [LA] were slightly higher in the GYM (91.7 ± 4.3 and 9.4 ± 2.2 mmol.L1) vs. LAB (85.5 ± 5.9
and 6.1 ± 2.3 mmol.L1). Thus, in this study simulated LAB sparring and pad work required similar VO2 (43–41 ml.kg1.min1, respectively), which corresponds to;70%VO2peak. These results underline the importance of a minimum of aerobic fitness for boxers and draw some guidelines for the intensity of training.

Evento em Portugal

2011 SCIENTIFIC CONGRESS ON MARTIAL ARTS AND COMBAT SPORTS
Viseu – Portugal
13th - 15th May 2011
POLYTECHNIC INSTITUTE OF VISEU,
MAIN AUDITORIUM

1st Announcement

GENERAL PRESENTATION

The 2011 edition of the Scientific Congress on Martial Arts and Combat Sports (SCMACS) will take place on 13h 14th and 15th May 2011 in Viseu (Portugal). The organizing committee of this event fully believes that this initiative will provide a valuable opportunity to promote, enlarge and strengthen the scientific community gathered around martial arts and combat sports.

The central issue of this Congress is the scientific interpretation of actions in broader contexts as Martial Arts (MA), Combat Sports (CS) or Self-Defence (SD), in relation to objectives usually associated with human development (health, education and well-being).

Participation in this congress should be as wide as possible. Instructors education and training, aiming at the development of skills throughout Polytechnic and University higher education study cycles, is a clearly medium-/long-term fundamental objective on the world, with a growing presence in the markets of physical activity (health, well-being and fitness), sports (from education to sport practice) and school physical education (given the eclectic, inclusive and multilateral context of this school subject). This trajectory, however, should be followed in connection with research developed and practice in scientific centres.

We firmly believe researchers, as well as undergraduate and post-graduate students (covering the levels of bachelor’s, master’s and Ph.D.), in the field of martial arts and combat sports, will be ready to present their research and share the richness of their experiences. This will surely contribute to strengthening this scientific community, which is growing and acquiring importance as a forum for the social development of Sports and Education at the European level and even worldwide, given its multicultural nature (East/West), usually more explored in non-scientific contexts.

In this way, we challenge all cultural and scientific organisations, particularly higher education and research institutions developing scientific activities related to the field in question, as well as federations with public usefulness purposes in the scope of martial arts and combat sports, to disseminate this information among potentially interested researchers, educators and practitioners, stimulating them to participate in this event as speakers and poster presenters. All committed communities of technicians and advanced practitioners of martial arts and combat sports will certainly be interested in participating in this congress and they can expect full support from us to do it.

The Congress is a non-profit event and no speaker fees will be paid by the organising committee. However, efforts will be carried out to cover foreign guest speakers’ logistic expenses (through registration fees funding). Any eventual profit will be invested in the publication of the congress proceedings.

The financial management of this first edition may count on the professional support provided by ADIV (Viseu’s Association for Development and Research), which is integrated in the Polytechnic Institute of Viseu, the higher education institution assuming the coordination of this congress, specifically through its School of Education .

Welcome to Viseu - Portugal!
Abel Figueiredo

Mortes em crianças japonesas praticantes de judô

Dica do Marcus

Child Judo Deaths Strike Fear in Japanese Parents

January 02, 2011

Tokyo. Research showing that an average of four children die each year during judo lessons in Japan has alarmed some parents as the country prepares to introduce martial arts as a compulsory school sport.

Yoshihiro Murakawa is one of those concerned about the government’s plan, because he is convinced his 12-year-old nephew died in a reckless judo practice.

The Japan Judo Accident Victims Association, which Murakawa helped create with other families last March, has urged the government to set safety guidelines for judo at school.

“Many factors are involved here,” Murakawa said of his nephew Koji’s death during judo club training. “First of all, many judo instructors at Japanese schools are too ignorant about what to do when a serious incident occurs.”

Murakawa also criticized some judo instructors for neglecting safety measures, such as letting children rest properly.

Koji’s mother had asked for special attention to be paid to him when he joined the judo club at a middle school in central Shiga prefecture, because he had an asthma problem.

But one afternoon in July 2009, Koji was still tackling older students and the instructor in the freestyle randori training despite being exhausted, Murakawa quoted students as saying.

After a final throw, Koji lost consciousness and fell into a coma before dying a month later, Murakawa said.

At least 110 children were killed in school judo practice over 27 years from 1983, according to research by Ryo Uchida, an assistant professor at Aichi University of Education.

“In judo, the number of cases in which trainees die due to techniques unique to the sport such as throwing is significantly high,” Uchida said.

In 2009 and 2010, 13 children have died and the latest case, involving a 6-year-old boy, occurred in November, a local newspaper reported.

Parents have been alarmed by the statistics because Japan plans to introduce traditional martial arts, including judo, as a required subject not only for boys but also girls at middle schools from 2012. Middle school pupils are aged between 12 and 15.

Uchida warned that more children would be exposed to a risk of serious injuries when judo became part of the official curriculum.

“Judo is an inspiring sport and very educative to one’s mind,” Uchida said. “But schools must have a safety guideline.”

Fonte: http://www.thejakartaglobe.com/sports/child-judo-deaths-strike-fear-in-japanese-parents/414631

Lesões em artistas marciais

BMC Public Health. 2010 Dec 30;10(1):795. [Epub ahead of print]


Characteristics of martial art Injuries in a defined Canadian population: a descriptive epidemiological study.
McPherson M, Pickett W.

Abstract

ABSTRACT: Background The martial arts have emerged as common activities in the Canadian population, yet few studies have investigated the occurrence of associated injuries on a population basis. Methods We performed such an investigation and suggest potential opportunities for prevention. The data source was 14 years (1993 to 2006) of records from the Kingston sites of the Canadian Hospital Injury Reporting and Prevention Program (CHIRPP). Results 920 cases were identified. Incidence rates were initially estimated using census data as denominators. We then imputed annual injury rates per 10000 using a range of published estimates of martial arts participation available from a national survey. Rates of injury in males and females were 2300 and 1033 per 10000 (0.3% participation) and 575 and 258 per 10000 (1.2% participation). Injuries were most frequently reported in karate (33%) and taekwondo (14%). The most common mechanisms of injury were falls, throws and jumps (33%). Fractures (20%) were the most frequently reported type of injury and the lower limb was the most common site of injury (41%). Conclusions Results provide a foundation for potential interventions with a focus on falls, the use of weapons, participation in tournaments, as well as head and neck trauma.

Acesso ao artigo na íntegra: http://www.biomedcentral.com/1471-2458/10/795

Fico pensando como é que as pessoas se machucam fazendo tai-chi...

Blog do Cruz

Dica do Fabrício e do Fábio:
Com dinheiro em caixa, judô é destaque em pódios internacionais

Enquanto é bombardeada pelos gravíssimos problemas nos aeroportos brasileiros, provocando prejuízo aos usuários, a Infraero dá uma boa notícia para o esporte. A direção da empresa confirmou para 2011 a renovação de patrocínio com a Confederação Brasileira de Judô (CBJ) pelo sexto ano consecutivo
Surpreendentemente, porém, apesar da evolução da modalidade, com conquistas internacionais importantes, os valores são os mesmos da temporada passada: R$ 1,5 milhão e mais R$ 250 mil para o projeto “Avança Judô”.
Fontes
Os valores totais da receita da CBJ em 2010 ainda não foram divulgados em seu site, mas em 2009 a confederação recebeu R$ 10,2 milhões de patrocínios. Entre os parceiros estão, além da Infraero, o Bradesco, Cielo, Scania e Ticket.
Com outras receitas, como recursos da Lei Agnelo Piva, da qual recebeu R$ 2,5 milhões, a Confederação de Judô teve um faturamento total de R$ 13 milhões, em 2009. Os dados estão no balanço da CBJ.
Além disso, entre 2007 e 2008, o judô teve o caixa fortalecido com R$ 3,8 milhões da Lei de Incentivo ao Esporte.
Resultados
Com dinheiro, os judocas das equipes nacionais tiveram bom desempenho em eventos internacionais, em 2010.
Segundo a assessoria de imprensa da Infraero foram conquistados 258 pódios em 30 eventos disputados, média de 8,5 conquistas por competição. Leandro Guilheiro e Rafael Silva foram os que mais ganharam títulos no exterior, seis cada um.
Análise I
Apesar dos ótimos recursos, com a CBJ registrando superávit de R$ 3 milhões, em 2009, e excelentes resultados das equipes de várias categorias, recebo reclamações de atletas e pais de jovens judocas. Ambos pedem para não serem identificados temendo represálias. Lamentavelmente, isso é normal, estamos no Brasil.
O problema é que o dinheiro concentra-se na preparação de equipes e não chega à iniciação, à base, onde estão muitos atletas prontos para evoluir em suas respectivas categorias. E, sem incentivo, nem sempre podem viajar para competições que lhes garantam evolução no ranking e, assim, aumentar o número de competidores por um lugar no pódio.
Isso se repete na maioria das modalidades olímpicas.
Vou tentar uma entrevista ao presidente da CBJ, Paulo Wanderley, para esclarecer sobre esta questão.
Análise II
O atleta vitorioso – espécie de outdoor ambulante – é uma excelente vitrine para o patrocinador. Entrevistas, viagens, pódios, fama, tudo contribui para dar visibilidade à marca das empresas que investem no esporte.
No caso do judô, e mesmo com o apoio financeiro recebido, nossos atletas carregam um peso a mais em seus uniformes, pois a Infraero é responsabilizada pelo caos nos aeroportos do país, como que se verifica neste início de ano.
E isso ocorre porque os partidos políticos, vorazes devoradores de cargos públicos e com perfis mais para a corrupção do que para a construção, insistem em assumir no lugar de gente especializada. É o que a presidente Dilma quer impor em seu governo, mas o PMDB briga para manter a confusão nomeando seus partidários.
Repercussão
A revista The Economista publicou recentemente reportagem sobre os eventos esportivos no Brasil – Copa e Olimpíada – que atinge diretamente a Infraero, mesmo sem ser citada.
“Em uma conferência em novembro, Giovanni Bisignani, diretor-executivo da International Air Transport Association (Associação Internacional de Transporte Aéreo), definiu a infraestrutura de transporte aéreo do Brasil como um "desastre crescente". E afirmou que se o país quiser evitar uma "vergonha internacional" precisa mudar imediatamente. "Mas não vejo progresso e o relógio está correndo", acrescentou.
Por José da Cruz às 21h12
http://blogdocruz.blog.uol.com.br/arch2011-01-01_2011-01-31.html#2011_01-04_21_12_36-139474431-0