Where are the limits of the effects of exercise intensity on cognitive control?

作     者：Karen Davranche Jeanick Brisswalter Rmi Radel 

作者机构：Aix Marseille UniversitCNRSLPC UMR 7290FR 3C FR 351213331 Marseille Cedex 3France Universit de Nice Sophia AntipolisUFR STAPSLAMHESS EA 630906205 Nice Cedex 3France 

出 版 物：《Journal of Sport and Health Science》 (运动与健康科学（英文）)

年 卷 期：2015年第4卷第1期

页      面：56-63页

核心收录：

学科分类：0402[教育学-心理学(可授教育学、理学学位）] 0403[教育学-体育学] 040203[教育学-应用心理学] 04[教育学] 1002[医学-临床医学] 1010[医学-医学技术（可授医学、理学学位）] 

基　　金：supported by a grant from the French Research Agency (ANR 2013-069) 

主　　题：Between-trials adjustments Intensity level Reaction time distributional Simon Task 

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~ - 20%）, moderate （VTI）, or very hard （VTj ＋ 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.