Exploring the Dose-Response Relationship between Acute Resistance Exercise Intensity and Cognitive Function
- UNCG Author/Contributor (non-UNCG co-authors, if there are any, appear on document)
- Yu-Kai Chang (Creator)
- Institution
- The University of North Carolina at Greensboro (UNCG )
- Web Site: http://library.uncg.edu/
- Advisor
- Jennifer Etnier
Abstract: The primary purpose of the present research was to explore the dose-response relationship between acute resistance exercise intensity and cognitive performance. A secondary purpose of this study was to use directly statistical techniques to explore the role of exercise-induced arousal as a mediator of the relationship. Sixty-eight participants were recruited and randomly assigned into rest, 40%, 70% or 100% of 10 repetition maximal (10-RM) groups. One-way ANOVA was computed for demographic variables and baseline measures, and regression analyses were computed to
examine the effect of exercise intensity as well as exercise-induced arousal on cognitive
performance. In addition, mediation analysis was applied to examine exercise-induced arousal as a mediator of this relationship. The results indicated that a 30-minute bout of resistance exercise has a positive impact on both information processing speed and executive function. Specifically, there is a significant linear relationship between exercise intensity and information processing speed. On the other hand, a significant quadratic trend for both exercise intensity and exercise-induced arousal was observed for executive function measures that assess inhibition, selective attention, working memory and attentional flexibility. Exercise-induced arousal was a significant mediator when tested using one of the heart-rate indexes and for one measure of executive function performance.
Thus, an acute bout of resistance exercise benefits cognitive performance and there is a dose-response effect of both exercise intensity and exercise-induced arousal on cognitive performance. Future research should explore other potential mediators of the relationship to further our understanding of mechanisms.
Exploring the Dose-Response Relationship between Acute Resistance Exercise Intensity and Cognitive Function
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Created on 12/1/2008
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Additional Information
- Publication
- Dissertation
- Language: English
- Date: 2008
- Keywords
- Acute Exercise, Cognition, Cognitive Performance, Executive Function, Physical Activity, Resistance Exercise
- Subjects
- Cognition $x Effect of exercise on.
- Cognition $x Physiological aspects.
- Exercise $x Psychological aspects.