文章基本信息

标题：Effect of Muscle Action, Load and Velocity Variation on the Bilateral Neuromuscular Response
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作者：Nick Ball ; Nick Ball ; Joanna Scurr 等
期刊名称：Journal of exercise physiology online
印刷版ISSN：1097-9751
出版年度：2011
卷号：14
期号：4
页码：1-12
语种：English
出版社：American Society of Exercise Physiologists
摘要：Ball N, Scurr J. Effect of Muscle Action, Load and Velocity Variation on the Bilateral Neuromuscular Response. JEPonline 2011;14(4):1- 12. The purpose of this study was to assess the neuromuscular asymmetry of the medial and lateral gastrocnemius (MG, LG) and soleus (SOL) of the dominant and non-dominant limbs during different muscle actions via electromyography (EMG). Fifteen active male participants completed isometric and isotonic (maximum, submaximum, bodyweight), isokinetic (1.05 rad·s-1 , 1.31 rad·s-1 , and 1.83 rad·s-1 ), squat jump, and 20 m sprint conditions on the same day. Bilateral asymmetry was only observed in the isokinetic (6.8% to 10.8%) and the squat jump (6.0% to 15.5%) conditions for the SOL, MG, and LG (P=0.05). No relationship was found between magnitude of bilateral asymmetry and load levels. Isometric max (0.4% to 4.2%) and isometric bodyweight conditions (0.6% to 4.2%) showed the lowest bilateral asymmetry ranges across all muscles. Understanding of bilateral asymmetry induced by different muscle actions is important to prevent muscle imbalance and to understand the potential mechanisms of muscular recruitment in tasks.
关键词：EMG;Triceps Surae;Laterality