Comparative electroencephalography analysis: Marathon runners during tapering versus sedentary controls reveals no...

Area of Science:

• Neuroscience
• Exercise Physiology
• Neuroimaging

Background:

• Previous research indicates physical activity (PA) induces adaptive neuroplastic brain changes.
• Existing electroencephalography (EEG) studies primarily examine acute exercise effects, not long-term plasticity.
• This study investigates EEG's potential to detect sustained PA-induced plasticity in runners versus controls.

Purpose of the Study:

• To determine if resting-state EEG can reveal long-lasting neuroplasticity in trained runners compared to sedentary controls.
• To explore the utility of EEG in assessing the long-term effects of physical activity on brain function.

Main Methods:

• Thirty trained runners and 30 sedentary controls (SC) participated in the ReCaP study.
• Physical activity was assessed using the International Physical Activity Questionnaire (IPAQ).
• Resting-state EEG data were collected from runners during marathon training taper, analyzed using standardized low-resolution electromagnetic tomography (sLORETA) across multiple frequency bands.

Main Results:

• Significant differences were observed in IPAQ scores and BMI between runners and controls.
• No significant differences in resting-state EEG power spectra were detected between the two groups.
• Demographic parameters, excluding PA and BMI, were comparable between groups.

Conclusions:

• The study did not find evidence of long-term exercise-induced plasticity detectable by resting-state EEG in runners.
• Heterogeneity in study protocols and timing of EEG recordings may explain discrepancies with prior research.
• Future research should investigate EEG at various post-exercise time points and exercise types to better understand its capacity for detecting long-term plasticity.