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Aerobic Exercise Rejuvenates the Fatigued Brain: Evidence from EEG and Flicker Values.

Tomomi Nomura¹, Kazuki Fujita², Kaori Kawabata²

¹Department of Rehabilitation, Faculty of Health Science, Fukui Health Science University, 55-13-1 Egami-cho, Fukui City, 910-3190, Fukui, Japan. t-nomura@fukui-hsu.ac.jp.

Applied Psychophysiology and Biofeedback

|June 15, 2026

Summary

Aerobic exercise effectively combats mental fatigue, significantly improving physiological indicators like flicker values and brainwave activity (EEG). This contrasts with simple rest, highlighting exercise as a potent recovery tool.

Keywords:

Aerobic exercise Electroencephalography Flicker Mental fatigue

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Area of Science:

Neuroscience
Exercise Physiology
Cognitive Psychology

Background:

Mental fatigue is a prevalent issue in modern society, impacting cognitive function and well-being.
Objective physiological markers are needed to accurately assess mental fatigue and its recovery.
The Paced Auditory Serial Addition Test (PASAT) is a validated method for inducing mental fatigue.

Purpose of the Study:

To investigate the restorative effects of aerobic exercise on mental fatigue.
To compare the efficacy of aerobic exercise versus passive rest in mental fatigue recovery.
To utilize physiological indicators, including flicker values and electroencephalography (EEG), for objective assessment.

Main Methods:

Healthy adults underwent induced mental fatigue using the PASAT.
Participants were randomized into an aerobic exercise group (20 min) or a rest group (20 min).
Flicker values and EEG parameters (theta, alpha, beta waves) were measured pre- and post-intervention.

Main Results:

The aerobic exercise group showed significant improvements in flicker values and EEG measures (increased theta, alpha, beta power) compared to the rest group.
No significant changes in physiological measures were observed in the rest group.
Recovery in flicker values positively correlated with increased alpha and beta wave power.

Conclusions:

Aerobic exercise demonstrates a superior restorative effect on mental fatigue compared to passive rest.
Objective physiological measures, including flicker values and EEG, validate the benefits of exercise for mental fatigue.
Aerobic exercise presents a promising, evidence-based intervention for mitigating mental fatigue.