The association between daily naps and metabolic syndrome: Evidence from a population-based study in the Middle-East.

Abstract

BACKGROUND:

Daily naps are a common habit in many Middle Eastern and Asian countries; however, little is known about the association between daily naps and other health consequences, including the presence of metabolic syndrome (MetS).

METHODS:

Participants were recruited from the Mashhad stroke and heart atherosclerotic disorders study. We defined MetS according to International Diabetes Federation criteria. Nighttime sleeping hours were categorized into three categories: <6, 6-8, and >8 hours. Using logistic regression models, we analyzed the association between the duration of night-time sleep and daily naps with MetS and its different components.

RESULTS:

A total of 9652 individuals were included in the study: 3859 with MetS (40%) and 5793 without MetS (60%), as the control group. Of all, 72% participants had a regular daily nap. Those with daily naps had a higher odd of MetS [Odds ratio:1.19, confidence interval: (1.08-1.33); P < .001]. We also observed significantly higher odds of obesity, central obesity, hypertriglyceridemia, and diabetes or impaired fasting glucose in these subjects. Men sleeping <6 hours per night had a lower odd of MetS. However, we observed higher odds of cardiovascular risk factors in participants sleeping <6 hours, including obesity and diabetes or IFG.

CONCLUSION:

Napping is a common habit in middle Eastern countries. Although the cross-sectional design of our study cannot prove causality, we observed a significant association between the presence of MetS and daily naps. The public should be aware of this possibility and be educated about the importance of sleeping patterns.

• Authors: Hamideh Ghazizadeh, Naser Mobarra, Habibollah Esmaily, Seyed Mohammad Reza Seyedi, Amin Amiri, Fariborz Rezaeitalab, Naghmeh Mokhber, Mohsen Moohebati, Mahmoud Ebrahimi, Mohammad Tayebi, Negin Behboodi, Maryam Mohammadi-Bajgiran, Samineh Hashemi, Gordon A Ferns, Saverio Stranges, Majid Ghayour-Mobarhan, Mahmoud Reza Azarpazhooh
• Journal: Sleep health (Sleep Health) Vol. 6 Issue 5 Pg. 684-689 (10 2020) ISSN: 2352-7226 [Electronic] United States
• PMID: 32482574 (Publication Type: Journal Article, Research Support, Non-U.S. Gov't)
• Copyright: Copyright © 2020 National Sleep Foundation. Published by Elsevier Inc. All rights reserved.

Topics

• Adult
• Cross-Sectional Studies
• Female
• Humans
• Male
• Metabolic Syndrome (epidemiology)
• Middle Aged
• Middle East (epidemiology)
• Sleep
• Time Factors