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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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quarta-feira, 2 de novembro de 2011

Soco no karate

J Electromyogr Kinesiol. 2011 Dec;21(6):1023-9. Epub 2011 Oct 17.


Kinematic and electromyographic analyses of a karate punch.
Vencesbrito AM, Rodrigues Ferreira MA, Cortes N, Fernandes O, Pezarat-Correia P.

Sports Sciences School of Rio Maior, Polytechnic Institute of Santarém, Rio Maior, Portugal.

Abstract

The aims of this study were: (i) to present the kinematic and electromyographic patterns of the choku-zuki punch performed by 18 experienced karatekas from the Portuguese team, and (ii) to compare it with the execution of 19 participants without any karate experience. The kinematic and electromyographic data were collected from the arm and forearm during the execution of the specific punch. A two-way analysis of variance (ANOVA) was used with significant level set at p⩽0.05. We found that the kinematic and neuromuscular activity in this punch occurs within 400ms. Muscle activities and kinematic analysis presented a sequence of activation bracing a near-distal end, with the arm muscles showing greater intensity of activation than muscles in the forearm. In the skill performance, the arm, flexion and internal rotation, and the forearm extension and pronation movements were executed with smaller amplitude in the karate group. Based on the results of this study, the two groups' presented distinct kinematic and electromyographic patterns during the performance of the choku-zuki punch.

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