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Effects of Different Nap Durations on Volleyball Performance and EEG Activity Following Mental Fatigue
Sponsor: Inonu University
Summary
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.
Official title: Effects of Mental Fatigue and Different Nap Durations on Volleyball Performance and Brain Activity
Key Details
Gender
MALE
Age Range
19 Years - 22 Years
Study Type
INTERVENTIONAL
Enrollment
10
Start Date
2025-10-01
Completion Date
2025-12-01
Last Updated
2026-07-14
Healthy Volunteers
Yes
Interventions
Mental Fatigue Induction
Mental fatigue was induced using a standardized 15-minute computerized Stroop Color-Word Task designed to increase cognitive load and induce mental fatigue before performance and EEG assessments.
Control Condition
Participants watched a neutral documentary for 15 minutes without mental fatigue induction or daytime nap intervention before EEG and performance assessments.
Daytime Nap 20 Minutes
Participants underwent a supervised 20-minute daytime nap following mental fatigue induction in a quiet, darkened room before post-intervention EEG and performance assessments.
Daytime Nap 40 Minutes
Participants underwent a supervised 40-minute daytime nap following mental fatigue induction in a quiet, darkened room before post-intervention EEG and performance assessments.
Daytime Nap 60 Minutes
Participants underwent a supervised 60-minute daytime nap following mental fatigue induction in a quiet, darkened room before post-intervention EEG and performance assessments.
Daytime Nap 90 Minutes
Participants underwent a supervised 90-minute daytime nap following mental fatigue induction in a quiet, darkened room before post-intervention EEG and performance assessments.
Locations (1)
Inonu University, Faculty of Sport Sciences
Malatya, Malatya, Turkey (Türkiye)