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标题：Where are the limits of the effects of exercise intensity on cognitive control?
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作者：Karen Davranche ; Jeanick Brisswalter ; Rémi Radel 等
期刊名称：Journal of Sport and Health Science
印刷版ISSN：2095-2546
出版年度：2015
卷号：4
期号：1
页码：56-63
DOI：10.1016/j.jshs.2014.08.004
出版社：Elsevier
摘要：Purpose: This study aimed to investigate whether workload intensity modulates exercise-induced effect on reaction time (RT) performances, and more specifically to clarify whether cognitive control that plays a crucial role in rapid decision making is altered. Methods: Fourteen participants performed a Simon Task while cycling 20 min at a light (first ventilatory threshold, VT"1 - 20%), moderate (VT"1), or very hard (VT"1 + 20%) level of exercise. Results: After 15 min of cycling, RTs are faster than during the first 5 min of exercise. This benefit does not fluctuate with the intensity of exercise and enlarges as RT lengthens. Despite a numerical difference suggesting a greater facilitation during moderate exercise (-16 ms) than during a light exercise (-10 ms), the benefit is not statistically different. Interestingly, we did not observe any signs of worsening on RT or on accuracy during very hard exercise. Conclusion: Cognitive control is extremely robust and appears not to be affected by the intensity of exercise. The selective inhibition and the between-trials adjustments are effective from the beginning to the end of exercise, regardless of the workload output.
关键词：Between; trials adjustments; Intensity level; Reaction time distributional; Simon Task