Adiposity related risks among the middle aged and elderly Chinese: the role of siesta and nocturnal sleep duration.
BACKGROUND increasingly, research suggests that lack of sleep is linked to adiposity worldwide, but few studies have been conducted in middle aged and elderly Chinese subjects. The purpose of the present study was to analyze the association of siesta and nocturnal sleep duration with the prevalence of adiposity in middle aged and elderly Chinese individuals. METHODS a total of 7,891 community dwelling Chinese subjects who had participated in the 2015 China Health and Retirement Longitudinal Study were included. A four stage random sampling method was used to select participants. Siesta and nocturnal sleep duration was self reported. Adiposity, including general obesity and abdominal obesity, was assessed. Multiple logistic analyses were conducted to explore the association between siesta, nocturnal sleep duration, and adiposity. RESULTS people with long siesta durations 1 hour/day) were significantly associated with an increased risk for abdominal obesity, independently and in all subgroup analyses, when compared to those without regular siesta. ORs after adjustment of confounding factors included: all subjects, OR 1.45, 95 CI, 1.23 to 1.70; middle aged subjects, OR 1.46, 95 CI, 1.15 to 1.86; elderly, OR 1.43, 95 CI, 1.14 to 1.78. CONCLUSIONS our data show that siesta duration plays a role in the prevalence of age specific abdominal obesity. Individuals with long siesta durations are more likely to have abdominal obesity among the middle aged and elderly population when compared to those without regular siesta. The results of this study need to be confirmed by further studies.
Nutricion hospitalaria