Document Type : Research Paper I Open Access I Released under CC BY-NC 4.0 license
Authors
1 Motor behavior . Urmia University, Urmia, Iran
2 Department of Motor Behavior, Faculty of Sport Sciences, University of Tabriz, Urmia, Iran
3 Department of Motor Behavior, Faculty of Sport Sciences, University of Tabriz, Tabriz, Iran
Abstract
Methods: The participants included 40 shooters who were randomly divided into four groups. In pre-test, the subjects shot thirty arrows at red, blue, and white targets as environmental change factors, and brain waves were simultaneously recorded by an electroencephalography device. Then, mental fatigue group performed a thirty-minute Stroop task, the physical fatigue group performed thirty minutes of work on a stationary bicycle, and the combined group performed fifteen minutes of Stroop and fifteen minutes of cycling. The control group did not receive any intervention. Finally, the post-test was taken according to the pre-test. The data were evaluated using SPSS27, Excel10, and Matlab2019 software and the combined analysis of variance method.
Results: The results showed that in red and white sables, all types of fatigue led to increased alpha wave activity, possibly indicating a compensatory mechanism for the brain to maintain focus. In contrast, in exposure to blue sables, all forms of fatigue caused a decrease in alpha wave activity, indicating an increased brain processing load.
Conclusion: The neural response to fatigue is not an absolute and fixed phenomenon, but is dynamically influenced by environmental features, including the color of visual stimuli. Increased alpha activity in response to red and white stimuli may represent a compensatory strategy of the brain to maintain performance under conditions of fatigue, while decreased alpha activity in response to blue stimuli likely reflects increased processing load and altered attentional mechanisms. These results emphasize the importance of considering environmental variables in studies of fatigue and cognitive performance.
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