title: Association of shift work with physical activity among police officers: the Buffalo cardio-metabolic occupational police stress study.
abstract: OBJECTIVE
  To examine relations of shift work with occupational, sports, and household physical activity (PA) among police officers.
  
  
  METHODS
  Self-reported PA was assessed among 350 male and female officers (aged 27 to 66). Day, afternoon, or midnight shift was identified from daily payroll records.
  
  
  RESULTS
  Shift work was associated with prevalence of hard-intensity (occupational and sport) PA among men, and very hard-intensity sport PA among women, with afternoon workers reporting the highest prevalence. Shift work was independently associated with total hours of hard-intensity PA among men and very hard-intensity PA among women, with afternoon workers reporting the most hours.
  
  
  CONCLUSIONS
  Results indicated that hard and very hard-intensity PA varied significantly across shifts with afternoon workers being the most active.
authors.affiliation: Biostatistics and Epidemiology Branch, Health Effects Laboratory Division, National Institute for Occupational Safety and Health, Centers for Disease Control and Prevention, Morgantown, West Virginia 26505, USA. iia4@cdc.gov
authors.forename: Claudia C
authors.initials: CC
authors.lastname: Ma
authors.forename: Cecil M
authors.initials: CM
authors.lastname: Burchfiel
authors.forename: Desta
authors.initials: D
authors.lastname: Fekedulegn
authors.forename: Michael E
authors.initials: ME
authors.lastname: Andrew
authors.forename: Luenda E
authors.initials: LE
authors.lastname: Charles
authors.forename: Ja K
authors.initials: JK
authors.lastname: Gu
authors.forename: Anna
authors.initials: A
authors.lastname: Mnatsakanova
authors.forename: John M
authors.initials: JM
authors.lastname: Violanti
mesh_terms: D000328:Adult; D000368:Aged; D005260:Female; D015438:Health Behavior; D006801:Humans; D035846:Law Enforcement; D008297:Male; D008875:Middle Aged; D009043:Motor Activity / Q000502:physiology; D016272:Occupational Health / Q000706:statistics & numerical data*; D016495:Police / Q000706:statistics & numerical data*; D057566:Self Report; D013177:Sports / Q000502:physiology; D014940:Work Schedule Tolerance / Q000523:psychology*