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The Association Between Daytime Sleep and General Obesity Risk Differs by Sleep Duration in Iranian Adults Publisher Pubmed



Mohammadifard N1 ; Sajjadi F2 ; Haghighatdoost F3 ; Masoodi S4 ; Sadeghi M5 ; Roohafza H1 ; Maghroun M5 ; Alikhasi H6 ; Zamaneh F1 ; Zakeri P7 ; Karimi S1 ; Sarrafzadegan N1
Authors
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Authors Affiliations
  1. 1. Isfahan Cardiovascular Research Center, Cardiovascular Research Institute, Isfahan University of Medical Sciences, Isfahan, Iran
  2. 2. Hypertension Research Center, Cardiovascular Research Institute, Isfahan University of Medical Sciences, Isfahan, Iran
  3. 3. Interventional Cardiology Research Center, Cardiovascular Research Institute, Isfahan University of Medical Sciences, Isfahan, Iran
  4. 4. Cancer Prevention Research Center, Isfahan University of Medical Sciences, Isfahan, Iran
  5. 5. Cardiac Rehabilitation Research Center, Cardiovascular Research Institute, Isfahan University of Medical Sciences, Isfahan, Iran
  6. 6. Pediatric Cardiovascular Research Center, Cardiovascular Research Institute, Isfahan University of Medical Sciences, Isfahan, Iran
  7. 7. Heart Failure Research Center, Cardiovascular Research Institute, Isfahan University of Medical Sciences, Isfahan, Iran

Source: Annals of Human Biology Published:2023


Abstract

Background: Sleep duration and daytime napping and obesity are related to adiposity; however, it is not clear whether the association between daytime napping and adiposity measures can differ by sleep duration. Aim: To clarify the association between daytime napping and general and abdominal obesity based on sleep duration of participants. Subjects and methods: This cross-sectional study was conducted on 1,683 individuals (837 men and 846 women) aged ≥ 35 years. Height, weight and waist circumference (WC) were measured according to the standard protocols. Body mass index (BMI) was calculated. Self-reported sleep duration (in a 24-hour cycle) was recorded. The odds of general and abdominal obesity were compared between nappers and non-nappers, stratified by their sleep duration (≤ 6 h, 6–8 h, ≥ 8 h). Results: The mean (SD) age of participants was 47.48 ± 9.35 years. Nappers with a short sleep duration (≤ 6 h) had greater BMI and higher risk for overweight/obesity compared with counterpart non-nappers after adjustment for potential confounders (OR = 1.61, 95% CI = 1.07–2.41). In subjects with moderate sleep duration (6–8 h), nappers had a tendency towards higher BMI in comparison with non-nappers (28.04 ± 0.25 vs. 26.93 ± 0.51 kg/m2; p = 0.05), however, no significant difference was observed for the risk of obesity. Daytime napping was not related to the risk of obesity in long sleepers. No significant association was observed for abdominal obesity measures. Conclusions: Daytime napping is associated with increased risk of overweight/obesity in short sleepers. However, in subjects with longer sleep duration, it is not related to the risk of overweight/obesity. © 2023 The Author(s). Published by Informa UK Limited, trading as Taylor & Francis Group.
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