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Daytime napping and increased risk of incident respiratory diseases : symptom, marker or risk factor?
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Leng, Y., Wainwright, N. W. J., Cappuccio, Francesco, Surtees , P. G., Hayat, S., Luben, R., Brayne, C. and Khaw, K. T. (2016) Daytime napping and increased risk of incident respiratory diseases : symptom, marker or risk factor? Sleep Medicine, 23 . pp. 12-15. doi:10.1016/j.sleep.2016.06.012
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Official URL: http://dx.doi.org/10.1016/j.sleep.2016.06.012
Abstract
Background: We have identified a strong association between daytime napping and increased mortality risk from respiratory diseases, but little is known about the relationship between daytime napping and respiratory morbidity.
Methods: Data were drawn from the European Prospective Investigation into Cancer and Nutrition (EPIC)-Norfolk cohort. Participants reported napping habits during 1998-2000, and were followed up for respiratory disease hospital admissions until March 2009. Cox proportional hazards regression was used to examine the association between daytime napping and respiratory disease incidence risk.
Results: The study sample included 10978 men and women with a mean age of 61.9 years old, and a total of 946 incident respiratory disease cases were recorded. After adjustment for age, sex, social class, education, marital status, employment status, nightshift work, body mass index (BMI), physical activity, smoking, alcohol intake, self-reported general health, hypnotic drug use, habitual sleep duration and pre-existing health conditions, daytime napping was associated with an increase in the overall respiratory incidence risk [Hazard Ratio (HR) =1.32, 95% confidence interval (CI) 1.15, 1.52 for napping<1h; HR=1.54, 95% CI 1.14, 2.09 for napping≥1h]. This association was more pronounced for lower respiratory diseases, especially for the risk of chronic lower respiratory diseases (HR = 1.52, 95% CI: 1.18, 1.96 for napping <1h; HR = 1.72, 95% CI: 1.01, 2.92 for napping≥1h, overall p=0.003).
Conclusions: Excessive daytime napping might be a useful indicator of future respiratory incidence risk. Further studies are required to confirm these findings and help understand potential mechanisms.
| Item Type: | Journal Article | ||||||||
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| Subjects: | R Medicine > RC Internal medicine | ||||||||
| Divisions: | Faculty of Medicine > Warwick Medical School > Health Sciences > Mental Health and Wellbeing Faculty of Medicine > Warwick Medical School |
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| Library of Congress Subject Headings (LCSH): | Naps (Sleep) , Respiratory organs -- Diseases -- Diagnosis | ||||||||
| Journal or Publication Title: | Sleep Medicine | ||||||||
| Publisher: | Elsevier BV | ||||||||
| ISSN: | 1389-9457 | ||||||||
| Official Date: | July 2016 | ||||||||
| Dates: |
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| Volume: | 23 | ||||||||
| Page Range: | pp. 12-15 | ||||||||
| DOI: | 10.1016/j.sleep.2016.06.012 | ||||||||
| Status: | Peer Reviewed | ||||||||
| Publication Status: | Published | ||||||||
| Access rights to Published version: | Open Access | ||||||||
| Funder: | Medical Research Council (Great Britain) (MRC), Cancer Research UK (CRUK) | ||||||||
| Grant number: | G9502233 and G1000143 (MRC), SP2024/0204 and C864/A14136 (CRUK) |
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