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Aging Effects on Neuromuscular Activity in Karate Practitioners

Journal of Sports Science 2015年第5期3卷 203-213页

作者： AntOnio Manue vitoria vences de brito Mario Andr Ferreira Rodrigues Wojciech Jan Cynarski Carlos Gutiorrez Garcia Sport Sciences School of Rio Maior Polytechnic Institute of Santar~m 2040-413 Rio Maior Portugal Life Quality Research Centre-CIEQV Complexo Andaluz Apartado 279 2001-904 SantarOm Portugal International Martial Arts and Combat Sports Scientific Society--IMACSSS 35-959 Rzeszow A. Towarnickiego Str. 3/17APoland Faculty of Physical Education University of RzeszEw Rzeszow 35-959 Poland department of Physical and Sport Education Faculty of Physical and Sport Sciences University of Le6n Vegazana Campus24071-Le6n Spain

Aging leads to a general decline in body functions that affects quality of life. Sports practice is recommended as a means to attenuate the impact of the aging process. The aim of this study was to identify and analyze the neuromuscular activity and its patterns on active karate practitioners and assess the effects of the aging process. Two groups of black belt male karate practitioners, one with nine practitioners over 50 years old and the other with 21 practitioners aged between 20-30 years old performed the frontal kick mae-geri. Kinematic and electromyographic data of five muscles were collected from the right leg. Results showed two distinct periods of muscular activation in the mae-geri performance, with similar muscles activity patterns between groups. Nevertheless, some differences were found in the muscles" activity onset and offset, in root mean square and in inter-muscle delay and co-contraction periods. Those differences indicated that aging affects the neuromuscular activity in the mae-geri performance of the oldest karate practitioners. Nevertheless, the results showed that lifelong practice of karate can preserve the quality of the neuromuscular activity in older practitioners when they perform a kick, and this could be associated with benefits to balance control.

关键词：运动科学体育运动训练体育训练

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