首页    期刊浏览 2024年11月30日 星期六
登录注册

文章基本信息

  • 标题:Caffeine-Induced Effects on Human Skeletal Muscle Contraction Time and Maximal Displacement Measured by Tensiomyography
  • 本地全文:下载
  • 作者:Przemysław Domaszewski ; Paweł Pakosz ; Mariusz Konieczny
  • 期刊名称:Nutrients
  • 电子版ISSN:2072-6643
  • 出版年度:2021
  • 卷号:13
  • 期号:3
  • 页码:815
  • DOI:10.3390/nu13030815
  • 出版社:MDPI Publishing
  • 摘要:Studies on muscle activation time in sport after caffeine supplementation confirmed the effectiveness of caffeine. The novel approach was to determine whether a dose of 9 mg/kg/ body mass (b.m.) of caffeine affects the changes of contraction time and the displacement of electrically stimulated muscle (gastrocnemius medialis) in professional athletes who regularly consume products rich in caffeine and do not comply with the caffeine discontinuation period requirements. The study included 40 professional male handball players (age = 23.13 ± 3.51, b.m. = 93.51 ± 15.70 kg, height 191 ± 7.72, BMI = 25.89 ± 3.10). The analysis showed that in the experimental group the values of examined parameters were significantly reduced (p ≤ 0.001) (contraction time: before = 20.60 ± 2.58 ms/ after = 18.43 ± 3.05 ms; maximal displacement: before = 2.32 ± 0.80 mm/after = 1.69 ± 0.51 mm). No significant changes were found in the placebo group. The main achievement of this research was to demonstrate that caffeine at a dose of 9 mg/kg in professional athletes who regularly consume products rich in caffeine has a direct positive effect on the mechanical activity of skeletal muscle stimulated by an electric pulse.
  • 关键词:caffeine; TMG; contraction time; professional athletes caffeine ; TMG ; contraction time ; professional athletes
国家哲学社会科学文献中心版权所有