Mental fatigue is known to impair cognitive and physical performance in athletes, but the effectiveness of different nap durations in counteracting these effects remains unclear. The purpose of this randomized crossover study is to investigate the effects of mental fatigue and different nap durations (20, 40, 60, and 90 minutes) on volleyball-specific performance and electroencephalographic (EEG) activity in trained male volleyball players. Mental fatigue is induced using a 15-minute Stroop task. Performance outcomes include the Volleyball Agility Test (VAT) and Countermovement Jump (CMJ), while cortical activity is assessed using resting-state EEG recordings. The findings are expected to improve understanding of the neurophysiological mechanisms underlying mental fatigue and recovery and to provide evidence-based recommendations regarding optimal nap duration for athletes.
Age range
19 Years – 22 Years
Sex
MALE
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EEG Spectral Power
Timeframe: At baseline, immediately after the mental fatigue task, and immediately after completion of the assigned intervention during each experimental session.
EEG Theta/Alpha Ratio
Timeframe: At baseline, immediately after the mental fatigue task, and immediately after completion of the assigned intervention during each experimental session.
EEG Theta/Beta Ratio
Timeframe: At baseline, immediately after the mental fatigue task, and immediately after completion of the assigned intervention during each experimental session.
Volleyball-Specific Agility Performance
Timeframe: Immediately after completion of each experimental protocol.
Countermovement Jump Height
Timeframe: Immediately after completion of each experimental protocol.