文章基本信息

标题：Post‐Activation Potentiation Increases Recruitment of Fast Twitch Fibers: A Potential Practical Application in Runners
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作者：Marco Gervasi ; Anna Rita Calavalle ; Stefano Amatori 等
期刊名称：Journal of Human Kinetics
印刷版ISSN：1640-5544
电子版ISSN：1899-7562
出版年度：2018
卷号：65
期号：1
页码：69-78
DOI：10.2478/hukin-2018-0021
出版社：Walter de Gruyter GmbH
摘要：To determine the relationship between fatigue and post-activation potentiation, we examined the effects of sub-maximal continuous running on neuromuscular function tests, as well as on the squat jump and counter movement jump in endurance athletes. The height of the squat jump and counter movement jump and the estimate of the fast twitch fiber recruiting capabilities were assessed in seven male middle distance runners before and after 40 min of continuous running at an intensity corresponding to the individual lactate threshold. The same test was then repeated after three weeks of specific aerobic training. Since the three variables were strongly correlated, only the estimate of the fast twitch fiber was considered for the results. The subjects showed a significant improvement in the fast twitch fiber recruitment percentage after the 40 min run. Our data show that submaximal physical exercise determined a change in fast twitch muscle fiber recruitment patterns observed when subjects performed vertical jumps; however, this recruitment capacity was proportional to the subjects’ individual fast twitch muscle fiber profiles measured before the 40 min run. The results of the jump tests did not change significantly after the three-week training period. These results suggest that pre-fatigue methods, through sub-maximal exercises, could be used to take advantage of explosive capacity in middle-distance runners.
关键词：squat jump ; middle distance running ; lactate threshold ; fibers ; recruitment