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Updated: Oct 2, 2025
08:20
Measuring Neural Mechanisms Underlying Sleep-Dependent Memory Consolidation During Naps in Early Childhood
Published on: October 2, 2019
12.1K
Temporal Associations Between Daytime Napping and Nocturnal Sleep: An Exploration of Random Slopes
Michael P Mead1, Phat Huynh2, Trung Q Le2,3
1Northwestern University Feinberg School of Medicine, 710 N Lake Shore Dr, Chicago, IL 60611, USA.
Summary
Daytime naps impact nocturnal sleep quality in college students. Longer naps correlate with poorer sleep, while better sleep may precede longer naps, especially for frequent nappers.
Area of Science:
- Sleep Science
- Chronobiology
- Behavioral Sleep Medicine
Background:
- Common sleep hygiene advice suggests limiting daytime naps to improve nighttime sleep, but evidence remains inconsistent.
- Previous research has not adequately explored daily, bidirectional relationships between napping and sleep in college students, nor the influence of individual differences.
Purpose of the Study:
- To investigate the daily temporal associations between self-reported daytime nap duration and objectively measured nocturnal sleep in college students.
- To examine if chronotype or nap frequency moderate these associations.
- To address limitations in existing literature regarding bidirectional effects and individual variability.
Main Methods:
- Utilized actigraphy to objectively measure nocturnal sleep (Total Sleep Time, Sleep Onset Latency, Sleep Efficiency, Wake After Sleep Onset) over 14 days.
- Collected daily self-reports of nap duration from 384 college students.
- Employed mixed linear models and random slope modeling to analyze daily associations and individual differences.
Main Results:
- Increased daytime nap duration was linked to higher Wake After Sleep Onset, lower Sleep Efficiency, and longer Sleep Onset Latency.
- Shorter Total Sleep Time, shorter Wake After Sleep Onset, and greater Sleep Efficiency were associated with longer naps the following day.
- Nap frequency moderated the relationship between Total Sleep Time and subsequent nap duration.
Conclusions:
- Significant daily associations exist between daytime napping and nocturnal sleep parameters in college students.
- Nap frequency plays a role in the relationship between sleep duration and subsequent napping.
- Further research on daily and contextual moderators can refine sleep hygiene recommendations for specific individuals.
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