Related Experiment Video
Updated: Jul 8, 2026
08:20
Measuring Neural Mechanisms Underlying Sleep-Dependent Memory Consolidation During Naps in Early Childhood
Published on: October 2, 2019
12.5K
Nonobvious connections between napping and stroke: a systematic review and meta-analysis.
Radosław Kaźmierski1, Szymon Jurga1, Izabela Wojtasz1
1Department of Neurology, Collegium Medicum, University of Zielona Góra, Zielona Góra, Poland.
Sleep Medicine Reviews
|September 19, 2025
Summary
Napping duration is linked to stroke risk. Short naps (1-30 minutes) increase risk by 27%, while long naps (>90 minutes) increase it by 79%. This systematic review highlights sleep patterns
Area of Science:
- Epidemiology
- Sleep Medicine
- Neurology
Background:
- Napping is a common behavior with potential health implications.
- Previous research on napping and stroke risk has yielded inconsistent findings.
- Understanding the nuances of napping patterns and their association with stroke is crucial for public health.
Purpose of the Study:
- To systematically review and meta-analyze existing research on the relationship between napping characteristics and stroke risk.
- To quantify the association between nap duration and stroke risk.
- To explore potential pathomechanisms linking napping to stroke.
Main Methods:
- Conducted two systematic searches in four electronic databases up to July 15, 2024.
- Included 13 studies for nap duration and stroke risk, and 7 studies for other napping features.
- Employed random-effects models and funnel plots to analyze data and assess publication bias.
Main Results:
- Nap duration showed a significant association with stroke risk.
- Naps of 1-30 minutes were associated with an odds ratio (OR) of 1.27.
- Naps exceeding 90 minutes were associated with a higher OR of 1.79.
Conclusions:
- Nap duration is a significant factor in stroke risk.
- Longer naps appear to confer a greater risk.
- Potential contributing factors include hypertension, diabetes, and inflammation.
Related Concept Videos
01:24Sleep-Wake Cycles
Sleep is an essential physiological process vital to maintaining overall well-being. The reticular activating system (RAS), a network of neurons in the brainstem, regulates wakefulness and sleep. While it may seem passive, sleep consists of distinct cycles, each with its unique characteristics and functions. Two key sleep phases are non-rapid eye movement (NREM) and rapid eye movement (REM).
NREM Sleep
NREM sleep comprises four progressive stages that seamlessly merge:
NREM Sleep
NREM sleep comprises four progressive stages that seamlessly merge:
01:21Friedman Two-way Analysis of Variance by Ranks
Friedman's Two-Way Analysis of Variance by Ranks is a nonparametric test designed to identify differences across multiple test attempts when traditional assumptions of normality and equal variances do not apply. Unlike conventional ANOVA, which requires normally distributed data with equal variances, Friedman's test is ideal for ordinal or non-normally distributed data, making it particularly useful for analyzing dependent samples, such as matched subjects over time or repeated measures from...