文章基本信息

标题：Neuromuscular fatigue after short maximum cycling exercise
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作者：Jereb, Blaž ; Strojnik, Vojko
期刊名称：Kinesiology
印刷版ISSN：1331-1441
出版年度：2004
卷号：35
期号：2
页码：135-142
出版社：Faculty of Kinesiology
摘要：Neuromuscular fatigue during and after short maximally intensive concentric exercise was analyzed. Nine healthy sport students performed the 15s Wingate test. Maximal cycling power decreased by 1.86 W × kg-1 (p<0.001) during the cycling. After the exercise, a significant increase in the blood lactate concentration was found (1.13 mM × l-1) before the exercise and 6.7 mM × l-1 seven minutes after the exercise (p<0.05). Electrical stimulation of the vastus lateralis muscle resulted in a decreased twitch maximum force by 30 % (p<0.001). Contraction time and half relaxation timewere shorter, but not significantly (p<0.05). Torque at 20 Hz stimulation decreased by 20 % (p<0.003), while torque at 100 Hz stimulation was lowered by 10 % (p<0.000). The results after the 15s maximally intensive cycling pointed to high and low frequency fatigue, however, it seems that low frequency fatigue prevailed.
关键词：sport; neuromuscular fatigue; Wingate test; electrical stimulation