Associations between short sleep duration and central obesity in women.
OBJECTIVE
The aim was to assess associations between sleep duration, sleep stages, and central obesity in women.


METHODS
Cross-sectional study.


METHODS
City of Uppsala, Sweden.


METHODS
Population-based sample of 400 women (range 20-70 years).


METHODS
Full-night polysomnography and measurement of anthropometric variables.


RESULTS
Sleep duration was inversely related to both waist circumference and sagittal abdominal diameter. Sleep duration remained inversely related to waist circumference (adj. beta = -1.22 cm/h; P = 0.016) and sagittal abdominal diameter (adj. beta = -0.46 cm/h; P = 0.001) after adjusting for potential confounders. Duration of slow wave sleep (SWS, adj. beta = -0.058 cm/min; P = 0.025) and REM sleep (adj. beta = -0.062 cm/min; P = 0.002) were both inversely related to waist circumference afteradjustments. Moreover,duration of REM sleep was inversely related to sagittal abdominal diameter (adj. beta = -0.021 cm/min; P < 0.0001). These associations were stronger in young women (age < 50 years).


CONCLUSIONS
An inverse relationship between short sleep duration and central obesity was found in women after adjusting for confounders. Loss of SWS and REM sleep may be important factors in the association between sleep loss and central obesity.
Theorell-Haglöw
Jenny
J
Department of Medical Sciences, Respiratory Medicine and Allergology, Uppsala University, Sweden. jenny.theorell-haglow@medsci.uu.se
Berne
Christian
C
Janson
Christer
C
Sahlin
Carin
C
Lindberg
Eva
E
D015992:Body Mass Index; D015897:Comorbidity; D003430:Cross-Sectional Studies; D005260:Female; D006801:Humans; D008875:Middle Aged; D056128:Obesity, Abdominal / Q000453:epidemiology*; D017286:Polysomnography; D012307:Risk Factors; D012892:Sleep Deprivation / Q000453:epidemiology* / Q000503:physiopathology; D012894:Sleep Stages; D012895:Sleep, REM; D013548:Sweden / Q000453:epidemiology; D013997:Time Factors; D055105:Waist Circumference
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