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Title: The effects of aging on electromechanical delay: a comparison between karate athletes and non-athletes
Author: VencesBrito, António
Ferreira, Mário
Branco, Marco
Keywords: electromyography
combat sports
Issue Date: 7-Sep-2017
Publisher: SciRes Literature LLC
Citation: VencesBrito, A. M., Ferreira, M. A. R., & Branco, M. (2017). The Effects of Aging on Electromechanical Delay: A Comparison between Karate Athletes and Non-Athletes. International Journal of Sports Science & Medicine, 1(1), 7
Abstract: Normal aging in humans is associated with a progressive decline in biological functions that affect motor performance. This study intended to analyze the effects of aging on electromechanical delay during the mae-geri kick performance. Forty-six males were divided into three groups according to age and sports practice: 9 veteran karate practitioners aged between 50 and 63 years (VetK), 21 young karate practitioners (YgK) and 16 non-karate practitioners aged between 18 and 35 years old. Electromechanical delay was defined as the time interval between the onset of the electric activity of a muscle and the beginning of joint movement. The statistical analysis was performed with One-Way Analysis of Variance and Turkey HSD Post-Hoc (SPSS, version 17.0). Rectus femoris EMD was found to be signifi cantly longer in VetK, suggesting that aging has a negative impact on the neuromuscular activity and contractile capacity of this muscle.
Peer review: yes
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Appears in Collections:Artigos em revistas internacionais - ESDRM

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