Author:
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Bjornsdottir, Erla; Janson, Christer; Lindberg, Eva; Arnardottir, Erna Sif; Benediktsdottir, Bryndís; García Aymerich, Judith; Carsin, Anne Elie; Gómez Real, Francisco; Toren, Kjell; Heinrich, Joachim; Nowak, Dennis; Sanchez-Ramos, José Luis; Demoly, Pascal; Arenas, Sandra Dorado; Coloma Navarro, Ramon; Schlunssen, Vivi; Raherison, Chantal; Jarvis, Deborah; Gislason, Thorarinn
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Abstract:
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INTRODUCTION: Sleep length has been associated with obesity and
various adverse health outcomes. The possible association of
sleep length and respiratory symptoms has not been previously
described. The aim of this study was to investigate the
association between sleep length and respiratory symptoms and
whether such an association existed independent of obesity.
METHODS: This is a multicentre, cross-sectional,
population-based study performed in 23 centres in 10 different
countries. Participants (n=5079, 52.3% males) were adults in the
third follow-up of the European Community Respiratory Health
Survey III. The mean+/-SD age was 54.2+/-7.1 (age range 39-67
years). Information was collected on general and respiratory
health and sleep characteristics. RESULTS: The mean reported
nighttime sleep duration was 6.9+/-1.0 hours. Short sleepers
(<6 hours per night) were n=387 (7.6%) and long sleepers
(>/=9 hours per night) were n=271 (4.3%). Short sleepers were
significantly more likely to report all respiratory symptoms
(wheezing, waking up with chest tightness, shortness of breath,
coughing, phlegm and bronchitis) except asthma after adjusting
for age, gender, body mass index (BMI), centre, marital status,
exercise and smoking. Excluding BMI from the model covariates
did not affect the results. Short sleep was related to 11 out of
16 respiratory and nasal symptoms among subjects with BMI
>/=30 and 9 out of 16 symptoms among subjects with BMI
<30. Much fewer symptoms were related to long sleep, both for
subjects with BMI <30 and >/=30. CONCLUSIONS: Our results
show that short sleep duration is associated with many common
respiratory symptoms, and this relationship is independent of
obesity. |