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Association of Sunlight Exposure With Sleep Hours in Iranian Children and Adolescents: The Caspian-V Study Publisher Pubmed



Baradaran Mahdavi S1, 2, 3 ; Mansourian M4 ; Shams E5 ; Qorbani M6 ; Heshmat R7 ; Motlagh ME8 ; Ziaodini H9 ; Dashti R10 ; Taheri M10 ; Kelishadi R2
Authors
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Authors Affiliations
  1. 1. Department of Physical Medicine and Rehabilitation School of Medicine, Isfahan University of Medical Sciences, Isfahan, 8167636954, Iran
  2. 2. Pediatrics Department, Child Growth and Devmt. Res. Ctr. Res. Inst. for Primordial Prevention of Non-communicable Disease, Isfahan University of Medical Sciences, Isfahan, 8167636954, Iran
  3. 3. Stud. Research Committee, School of Medicine, Isfahan University of Medical Sciences, Isfahan, 8167636954, Iran
  4. 4. Department of Biostatistics and Epidemiology School of Health, Isfahan University of Medical Sciences, Isfahan, 8167636954, Iran
  5. 5. Department of Mathematical Sciences, Isfahan University of Technology, Isfahan, 8415683111, Iran
  6. 6. Department of Epidemiology, Non-communicable Diseases Research Center, Alborz University of Medical Sciences, Karaj, 3149779453, Iran
  7. 7. Department of Epidemiology, Chronic Diseases Research Center Endocrinology and Metabolism Population Sciences Institute, Tehran University of Medical Sciences, Tehran, 1417653761, Iran
  8. 8. Pediatrics Department, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, 6135715794, Iran
  9. 9. Health Psychology Department, Research Center of Education Ministry Studies, Tehran, 1997755611, Iran
  10. 10. Bureau of Family, Population, Youth, School Health Ministry of Health and Medical Education, Tehran, 1467664961, Iran

Source: Journal of Tropical Pediatrics Published:2019


Abstract

We aimed to assess the association of sunlight exposure with sleep duration and sleep onset time in children. Data were obtained from the fifth survey of a national school-based surveillance program in Iran. Sunlight exposure time, sleep duration, sleep onset time, physical activity time, mental health status and frequency of consuming coffee and tea were recorded. Overall, 14 274 students aged 7-18 years were recruited. Sleep duration was associated positively with sex, age, body mass index and physical activity, as well as with sunlight exposure and negatively with the consumption of coffee and tea. Higher physical activity, exposure to sunlight and mental status score in children exposed to sunlight via their face, hands, arms and feet, reduced the likelihood of sleep onset time after midnight (odds ratio (OR) = 0.909, 0.741 and 0.554 respectively). Daily exposure to sunlight may increase sleep duration and advance the sleep onset time in children and adolescents. © 2019 The Author(s) [2019]. Published by Oxford University Press. All rights reserved.
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