Abstract:
OBJECTIVES:Afternoon napping is a common habit in China. We used data obtained from the Dongfeng-Tongji cohort to examine if duration of habitual afternoon napping was associated with risks for impaired fasting plasma glucose (IFG) and diabetes mellitus (DM) in a Chinese elderly population. METHODS:A total of 27,009 participants underwent a physical examination, laboratory tests, and face-to-face interview. They were categorized into four groups according to nap duration (no napping, <30, 30 to <60, 60 to <90, and > or =90 min). Logistic regression models were used to examine the odds ratios (ORs) of napping duration with IFG and DM. RESULTS:Of the participants, 18,515 (68.6%) reported regularly taking afternoon naps. Those with longer nap duration had considerably higher prevalence of IFG and DM. Napping duration was associated in a dose-dependent manner with IFG and DM (P<.001). After adjusting for possible confounders, longer nap duration (>60 min; all P<.05) was still significantly associated with increased risk for IFG, and longer nap duration (>30 min) was associated with increased risk for DM; however, this finding was not significant in the group with a nap duration of 60-90 min. CONCLUSIONS:Longer habitual afternoon napping was associated with a moderate increase for DM risk, independent of several covariates. This finding suggests that longer nap duration may represent a novel risk factor for DM and higher blood glucose levels.
journal_name
Sleep Medjournal_title
Sleep medicineauthors
Fang W,Li Z,Wu L,Cao Z,Liang Y,Yang H,Wang Y,Wu Tdoi
10.1016/j.sleep.2013.04.015subject
Has Abstractpub_date
2013-10-01 00:00:00pages
950-4issue
10eissn
1389-9457issn
1878-5506pii
S1389-9457(13)00190-1journal_volume
14pub_type
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