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São Paulo, São Paulo, Brazil
Professor da EEFE-USP; Praticante e Pesquisador de Judô; Preparador físico de atletas de modalidades esportivas de combate.

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sábado, 26 de janeiro de 2013

Análise de capacetes no TKD


 2013 Jan 24. [Epub ahead of print]

Safety performance evaluation of taekwondo headgear.

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.

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