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  • 标题:Force and Electromyographic Responses of the Biceps Brachii after Eccentric Exercise in Athletes and non-Athletes
  • 本地全文:下载
  • 作者:Adam Kawczyński
  • 期刊名称:Journal of Human Kinetics
  • 印刷版ISSN:1640-5544
  • 电子版ISSN:1899-7562
  • 出版年度:2019
  • 卷号:68
  • 期号:1
  • 页码:203-210
  • DOI:10.2478/hukin-2019-0068
  • 出版社:Walter de Gruyter GmbH
  • 摘要:The aim of this study was to compare skeletal muscle response to elbow flexors eccentric exercise in athletes and non-athletes. A set of eccentric (ECC) exercises was performed in a group of 12 athletes and 12 non-athlete controls. Maximal isometric force, electromyographic (EMG) activity of the biceps brachii and the resting elbow angle were assessed before, immediately, 48 hours, 5 and 10 days after high-intensity ECC exercises. During the set of the ECC exercises each participant performed 25 eccentric contractions of elbow flexors. Each contraction consisted of lowering a dumbbell from the flexed (elbow joint angle: 5 0 ° _ ) to the extended elbow (elbow joint angle: 1 8 0 ° _ ) position. The weight of the dumbbell was set at 80% of one-repetition maximum (1RM). The ECC contractions caused a decrease in maximal isometric force in both groups. The variable dropped by 8% in non-athletes and by 24% in athletes. Furthermore, the EMG RMS increased significantly only for non-athletes 10 days after the ECC exercise compared to baseline values. The present study showed different effects of ECC exercise on force and EMG in athletes and non-athletes, indicating a more pronounced force response in athletes and electromyographic response in non-athletes.
  • 关键词:athletes ; force ; electromyography ; eccentric contraction
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