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Updated: Dec 29, 2025

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Collecting Sleep, Circadian, Fatigue, and Performance Data in Complex Operational Environments
Published on: August 8, 2019
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Factors associated with sleep duration among pupils
Jun Kohyama1, Makoto Ono1, Yuki Anzai1
1Department of Pediatrics, Tokyo Bay Urayasu Ichikawa Medical Centre, Urayasu, Japan.
Summary
Student sleep duration is negatively impacted by extensive after-school activities and increased sleepiness. Factors like screen time and grade level also contribute to sleep loss in pupils.
Area of Science:
- Pediatrics
- Sleep Medicine
- Educational Psychology
Background:
- Sleep deprivation is a widespread issue among students.
- Understanding factors affecting student sleep is crucial for academic and health outcomes.
Purpose of the Study:
- To identify factors associated with reduced sleep duration in students across different school levels.
- To provide insights for interventions aimed at improving student sleep habits.
Main Methods:
- A cross-sectional study involving 2,722 students from elementary, junior high, and high school.
- Multiple regression analysis was employed to determine predictors of sleep duration.
Main Results:
- Longer after-school activities and increased sleepiness were consistently linked to shorter sleep duration across all school types.
- Higher grade level and increased weekday screen time were associated with sleep loss in elementary and junior high students.
- Specific factors like irregular meals, breakfast skipping, weekend screen time, academic performance, and body mass index also showed significant associations with sleep duration in certain school levels.
Conclusions:
- Excessive after-school activities are a significant factor contributing to sleep reduction in students.
- Addressing after-school activity load and screen time may be key strategies to improve student sleep duration.
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