Luvas e protetor de cabeça no boxe e no MMA e seus efeitos sobre o impacto

J Neurosurg. 2012 Feb 7. [Epub ahead of print]

Boxing and mixed martial arts: preliminary traumatic neuromechanical injury risk analyses from laboratory impact dosage data.

Bartsch AJ, Benzel EC, Miele VJ, Morr DR, Prakash V.

Spine Research Laboratory and.

Abstract

Object In spite of ample literature pointing to rotational and combined impact dosage being key contributors to head and neck injury, boxing and mixed martial arts (MMA) padding is still designed to primarily reduce cranium linear acceleration. The objects of this study were to quantify preliminary linear and rotational head impact dosage for selected boxing and MMA padding in response to hook punches; compute theoretical skull, brain, and neck injury risk metrics; and statistically compare the protective effect of various glove and head padding conditions. Methods An instrumented Hybrid III 50th percentile anthropomorphic test device (ATD) was struck in 54 pendulum impacts replicating hook punches at low (27-29 J) and high (54-58 J) energy. Five padding combinations were examined: unpadded (control), MMA glove-unpadded head, boxing glove-unpadded head, unpadded pendulum-boxing headgear, and boxing glove-boxing headgear. A total of 17 injury risk parameters were measured or calculated. Results All padding conditions reduced linear impact dosage. Other parameters significantly decreased, significantly increased, or were unaffected depending on padding condition. Of real-world conditions (MMA glove-bare head, boxing glove-bare head, and boxing glove-headgear), the boxing glove-headgear condition showed the most meaningful reduction in most of the parameters. In equivalent impacts, the MMA glove-bare head condition induced higher rotational dosage than the boxing glove-bare head condition. Finite element analysis indicated a risk of brain strain injury in spite of significant reduction of linear impact dosage. Conclusions In the replicated hook punch impacts, all padding conditions reduced linear but not rotational impact dosage. Head and neck dosage theoretically accumulates fastest in MMA and boxing bouts without use of protective headgear. The boxing glove-headgear condition provided the best overall reduction in impact dosage. More work is needed to develop improved protective padding to minimize linear and rotational impact dosage and develop next-generation standards for head and neck injury risk.

Um dos resultados da dissertação de mestrado da Daniele Detanico

Original article
Relationship of aerobic and neuromuscular indexes with specific actions in judo

Volume 27, Issue 1 Pages 16-22

Relation entre paramètres aérobies et neuromusculaires et actions spécifiques au judo

D. Detanicoa, , , J. Dal Pupoa, E. Franchinib, S. Giovana dos Santosa

a Biomechanics Laboratory, Federal University of Santa Catarina, Santa Catarina, Brazil

b School of Physical Education and Sport, University of São Paulo, São Paulo, Brazil

Received 14 June 2010. Accepted 28 January 2011. Available online 9 March 2011.

http://dx.doi.org/10.1016/j.scispo.2011.01.010, How to Cite or Link Using DOIPermissions & Reprints

--------------------------------------------------------------------------------

Summary
Objective
The aim of this study was to verify the relationship of aerobic and neuromuscular indexes with specific situations in judo.
Method
Eighteen male judokas took part in the study. The following assessments were performed: vertical jump (CMJ) on a force platform; Special Judo Fitness Test (SJFT) to obtain the number of throws and percentage of the maximal heart rate (%HRmax) one minute after the test; match simulation to obtain the peak blood lactate (LACmax) and the percentage of the blood lactate removal (BLR); incremental test to obtain the velocity at the anaerobic threshold (vAT) and peak velocity (PV) reached in the test.
Results
A significant correlation was observed between the number of throws in the SJFT, the vAT (r = 0.60; P < 0.01), PV (r = 0.70; P < 0.01) and CMJ (r = 0.74; P < 0.01). A significant inverse correlation was found between the LACmax and vAT (r = −0.59; P = 0.01).
Conclusions
It can be concluded that the performance in the SJFT was determined by the aerobic capacity and power and the muscle power. Athletes with greater aerobic ability (vAT) presented lower blood lactate accumulation after the match.

Résumé
Objectif
Analyser les relations entre indices aérobies et neuromusculaires avec des actions spécifiques du judo.
Méthodes
Dix-huit judokas ont participé à cette étude. Ont été réalisées les évaluations suivantes : saut vertical (CMJ) ; Special Judo Fitness Test (SJFT) pour l’obtention du nombre de lancements et du pourcentage de la fréquence cardiaque maximale (%FCmax) ; simulation de match pour l’obtention du taux maximal de lactate sanguin (LACmax) et du pourcentage de la diminution de lactate (DLS) ; test incrémental pour l’obtention de la vitesse au seuil anaérobie (SA) et du sommet de la vitesse (SV) atteint dans l’essai.
Résultats
Il a été observé une corrélation significative entre le nombre de lancements dans le SJFT, la VLAn (r = 0,60 ; p < 0,01), SV (r = 0,70 ; p < 0,01) et le CMJ (r = 0,74 ; p < 0,01). Il a été trouvé une corrélation significative inverse entre le LACmax et la SA (r = −0,59 ; p = 0,01).
Conclusions
On peut conclure que la performance dans SJFT a été déterminée par la capacité de la puissance maximale aérobie et par la puissance musculaire. Les athlètes ayant la plus grande capacité aérobie (SA) ont présenté une moindre accumulation de lactate sanguin après le match.
Keywords
Aerobic fitness; Muscle power; Judo
Mots clés
Aptitude aérobie; Puissance musculaire; Judo

Paula e Diego compartilhando seus trabalhos

http://www.fetesp.com.br/index.php?acao_noticias=noticia&acao=noticias&noticia_id_02=1901

"Informações" sobre lutas

Dica do Fabrício:
http://www.minhavida.com.br/categoria/216-especial-lutas.htm

Se alguém encontrar de onde as pessoas tiram algumas dessas informações, por favor, me enviem porque nunca encontrei...
Já que o tema envolve artes marciais, aí vai um ditado japonês: "se você acredita em tudo que lê, é melhor parar de ler"

Nacif migrando para o MMA?

http://www.redetribuna.com.br/televisao/tribunaesporte/noticias/581/portas-abertas-para-o-mma

Mini-curso

“Atualização no ensino de judô para crianças: pesquisas e aplicações”

Ministrante: Prof. Dr. Michel Calmet
Universidade de Montpellier, França
5º Dan de judô

Realização: Grupo de Estudos e Pesquisas em Lutas, Artes Marciais e Modalidades de Combate
Coordenação: Emerson Franchini

Entidade promotora: Centro de Práticas Esportivas da Universidade de São Paulo

Público alvo: estudantes e profissionais de educação física e esporte, e professores de judô.

Número de vagas disponíveis: 20 (por ordem de inscrição)

Dia: 28/02/2012

Horário: 8:30 as 11:30h

Local: dojô do Centro de Práticas Esportivas da Universidade de São

Custo: Gratuito

Inscrição via e-mail: ensinolutas@gmail.com, indicando nome completo, telefone para contato e categoria (estudante ou profissional de Educação Física, professor de judô)

Prazo: 11/02/2012

Emissão de certificados aos participantes que participarem de todo o curso

Obrigatório o uso de judogi (branco ou azul)

Artigo sobre resposta imune ao treinamento de judô

http://www.minervamedica.it/en/journals/medicina-dello-sport/article.php?cod=R26Y2011N04A0393