Longitudinal and Cross-sectional Associations between the Dietary Inflammatory Index and Objectively and Subjectively Measured Sleep among Police Officers

Details

• Alternative Title:
  J Sleep Res
• Personal Author:
  Wirth, Michael D. ; Fekedulegn, Desta ; Andrew, Michael E. ; McLain, Alexander C. ; Burch, James B. ; Davis, Jean E. ; Hébert, James R. ; Violanti, John M.
• Description:
  Police officers experience exposures associated with increased inflammation, such as the stress associated with shiftwork and poor-quality diet, both of which have been shown to affect sleep duration and quality. This study examined the longitudinal and cross-sectional effects of the Energy-density Dietary Inflammatory Index (E-DII™) on objectively and subjectively measured sleep among police officers. Data were derived from the Buffalo Cardio-Metabolic Occupational Police Stress Cohort (n = 464 at baseline), with longitudinal data collected from 2004 to 2019. A food frequency questionnaire obtained estimated dietary intake from which E-DII scores were calculated. Dependent variables were objectively (Micro Motion Logger Sleep Watch™) and subjectively (Pittsburgh Sleep Quality Index) measured sleep quality and quantity. The analyses included a series of linear mixed-effects models used to examine cross-sectional and longitudinal associations between the E-DII and sleep quantity and quality. Cross-sectionally, more pro-inflammatory diets were associated with higher wake-after-sleep-onset but improved subjective sleep quality. In models accounting for both longitudinal and cross-sectional effects, for every 1-unit increase in the E-DII scores over time (representing a pro-inflammatory change), wake-after-sleep-onset increased by nearly 1.4 min (p = 0.07). This result was driven by officers who primarily worked day shifts (β = 3.33, p = 0.01). Conversely, for every 1-unit increase in E-DII score, the Pittsburgh Sleep Quality Index global score improved. More pro-inflammatory diets were associated with increased wake-after-sleep-onset, an objective measure of sleep quality. Intervention studies to reduce dietary inflammatory potential may provide greater magnitude of effect for changes in sleep quality.
• Subjects:
  Article Cross-Sectional Studies Diet Humans Inflammation Occupational Stress Pittsburgh Sleep Quality Index Police Shiftwork Sleep Sleep Duration Sleep Quality Sleep Wake Disorders

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• Source:
  J Sleep Res. 31(4):e13543
• Pubmed ID:
  34967055
• Pubmed Central ID:
  PMC9240102
• Document Type:
  Journal Article
• Funding:
  R01 OH009640/OH/NIOSH CDC HHSUnited States/ ; R01 OH010807/OH/NIOSH CDC HHSUnited States/ ; R03 OH003772/OH/NIOSH CDC HHSUnited States/
• Volume:
  31
• Issue:
  4
• Collection(s):
  CDC Public Access
• Main Document Checksum:
  urn:sha256:8f9fbd82ecee0f9bfe9aeaa899c426393858387b5e0c09cb6793cb6dcd5da2cb
• Download URL:
  https://stacks.cdc.gov/view/cdc/119328/cdc_119328_DS1.pdf
• File Type:
  [PDF - 358.09 KB ]