Sleep duration and body mass index: moderating effect of self-perceived stress and age. Results of a cross-sectional population-based study.

Publisher: Springer Country of Publication: Germany NLM ID: 9707113 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1590-1262 (Electronic) Linking ISSN: 11244909 NLM ISO Abbreviation: Eat Weight Disord Subsets: MEDLINE

Publication: 2013- : Heidelberg : Springer
Original Publication: Milano, Italy : Editrice Kurtis, c1996-

Sleep* ; Waist Circumference*; Obesity/*epidemiology ; Stress, Psychological/*epidemiology; Adolescent ; Adult ; Age Factors ; Aged ; Body Mass Index ; Cross-Sectional Studies ; Female ; Humans ; Male ; Middle Aged ; Prevalence ; Romania/epidemiology ; Time Factors ; Young Adult

Purpose: The objective of this analysis was to assess whether the association between sleep duration and BMI and between sleep duration and waist circumference is moderated by age and self-perceived stress.
Methods: We analyzed data from 2034 participants enrolled in 2014 in the cross-sectional study Obesity in Romania Study-study of the prevalence of obesity and related risk factors in Romanian general population (ORO study).
Results: Interaction between sleep duration, self-perceived stress and age, with BMI as dependent variable, was statistically significant after adjustment for demographic and lifestyle factors (p value for interaction 0.003). In participants without self-perceived stress, a linear negative association between sleep duration and BMI was observed only in those 18-39 years old (p = 0.049), with BMI decreasing in parallel with increased sleep duration. In participants with self-perceived stress, a U-shaped relationship was observed between BMI and sleep duration in those 40-64 years old, with higher BMI in those sleeping ≤ 6 h and ≥ 9 h/night compared to those sleeping > 6 and < 9 h/night (p = 0.002 and 0.005). Those ≥ 65 years old with self-perceived stress sleeping ≥ 9 h/night had a significantly higher BMI compared to those in other sleep duration categories (p = 0.041 vs. those sleeping ≤ 6 h/night and p = 0.013 vs. to those sleeping > 6 and < 9 h/night). No interaction between age, self-perceived stress and sleep duration, with waist circumference as dependent variable was observed.
Conclusions: In our sample, the association between sleep duration and BMI was moderated by self-perceived stress and age.

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Grant year 2013 Coca-Cola Foundation

Keywords: Age; Body mass index; Self-perceived stress; Sleep duration; Waist circumference

Date Created: 20190314 Date Completed: 20200413 Latest Revision: 20200413

20221213

10.1007/s40519-019-00665-0

30864044