Cross-Sectional and Longitudinal Associations Between Objectively Measured Sleep Duration and Body Mass Index: The CARDIA Sleep Study

Details

• Personal Author:
  Hulley SB ; Knutson KL ; Lauderdale DS ; Liu K ; Rathouz PJ ; Yan LL
• Description:
  Numerous studies have found an association between shorter sleep duration and higher body mass index (BMI) in adults. Most previous studies have been cross-sectional and relied on self-reported sleep duration, which may not be very accurate. In the Coronary Artery Risk Development in Young Adults (CARDIA) Sleep Study (2000-2006), the authors examine whether objectively measured sleep is associated with BMI and change in BMI. They use several nights of wrist actigraphy to measure sleep among participants in an ongoing cohort of middle-aged adults. By use of linear regression, the authors examine whether average sleep duration or fragmentation is associated with BMI and 5-year change in BMI, adjusting for confounders. Among 612 participants, sleep duration averaged 6.1 hours and was grouped into 4 categories. Both shorter sleep and greater fragmentation were strongly associated with higher BMI in unadjusted cross-sectional analysis. After adjustment, BMI decreased by 0.78 kg/m2 (95% confidence interval: -1.6, -0.002) for each increasing sleep category. The association was very strong in persons who reported snoring and weak in those who did not. There were no longitudinal associations between sleep measurements and change in BMI. The authors confirmed a cross-sectional association between sleep duration and BMI using objective sleep measures, but they did not find that sleep predicted change in BMI. The mechanism underlying the cross-sectional association is not clear. [Description provided by NIOSH]
• Subjects:
  Cohort Studies Epidemiology Occupational Health Safety Sleep Sleep Initiation And Maintenance Disorders
• Keywords:
  Author Keywords: Body Mass Index BMI Body Mass Index Cohort Studies Cross Sectional Studies Obesity Sleep Sleep Deprivation Sleep Disorders Snoring
• ISSN:
  0002-9262
• Document Type:
  Text
• Funding:
  Grant
• Genre:
  Journal Article
• Place as Subject:
  California ; Illinois ; OSHA Region 5 ; OSHA Region 9
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Volume:
  170
• Issue:
  7
• NIOSHTIC Number:
  nn:20052798
• Citation:
  Am J Epidemiol 2009 Oct; 170(7):805-813
• Contact Point Address:
  Dr. Diane S. Lauderdale, Department of Health Studies, University of Chicago, 5801 South Ellis Avenue, Chicago, IL 60637
• Email:
  lauderdale@health.bsd.uchicago.edu
• Federal Fiscal Year:
  2010
• NORA Priority Area:
  Healthcare and Social Assistance
• Performing Organization:
  University of Chicago
• Peer Reviewed:
  True
• Start Date:
  20090901
• Source Full Name:
  American Journal of Epidemiology
• End Date:
  20150831
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:dfb56f1fe7e69625665bf483fe714f07e449b5548f8696dbe8aa81866a1ad53def3b04ce09c3e6571cbc958664b48c1fc12c76ab147d5f409476a53f6b5c15e3
• Download URL:
  https://stacks.cdc.gov/view/cdc/212271/cdc_212271_DS1.pdf
• File Type:
  [PDF - 235.09 KB ]