title: The Immediate and Sustained long-Term Changes in Daytime Sleepiness After Participation in a Workplace Pedometer Program: A Prospective Cohort Study.
abstract: OBJECTIVE
  To assess the potential benefit of a workplace physical activity program on daytime sleepiness.
  
  
  METHODS
  A total of 685 participants of a 4-month workplace physical activity program were assessed for daytime sleepiness (Epworth Sleepiness Scale [ESS]) at baseline, 4 months (postprogram), and 12 months. Changes in ESS were analyzed using multilevel mixed linear regression.
  
  
  RESULTS
  In the total population, no changes in ESS scores were observed; 0 to 4 months: -0.2 (95% CI: -0.5 to 0.0), 4 to 12 months: 0.1 (95% CI: -0.2 to 0.4). In participants with baseline excessive daytime sleepiness (ESS > 10, n = 109), ESS scores improved significantly by -2.2 (95% CI: -3.0 to -1.4) at 4 months, sustained at 12 months; and almost half no longer had excessive daytime sleepiness by end of program.
  
  
  CONCLUSIONS
  This study suggests that for employees with excessive daytime sleepiness, short- and long-term improvement in daytime sleepiness may be an unforeseen benefit of workplace physical activity programs.
authors.affiliation: From the Obesity and Population Health Unit (Ms NG, Drs Freak-Poli and Peeters, and Mr Stevenson), Baker IDI Heart and Diabetes Institute; Department of Epidemiology & Preventive Medicine, Faculty of Medicine, Nursing & Health Sciences, School of Public Health and Preventive Medicine, Monash University, Melbourne, Victoria, Australia; Department of Epidemiology (Dr Freak-Poli), Erasmus Medical Centre, Rotterdam, The Netherlands; and School of Health & Social Development (Dr Stevenson), Faculty of Health, Deakin University, Melbourne, Victoria, Australia.
authors.forename: Winda Liviya
authors.initials: WL
authors.lastname: Ng
authors.forename: Rosanne
authors.initials: R
authors.lastname: Freak-Poli
authors.forename: Christopher
authors.initials: C
authors.lastname: Stevenson
authors.forename: Anna
authors.initials: A
authors.lastname: Peeters
mesh_terms: D056044:Actigraphy; D000328:Adult; D006970:Disorders of Excessive Somnolence / Q000175:diagnosis* / Q000628:therapy*; D005260:Female; D006801:Humans; D008137:Longitudinal Studies; D008297:Male; D008875:Middle Aged; D009043:Motor Activity; D009784:Occupational Diseases / Q000175:diagnosis* / Q000628:therapy*; D011446:Prospective Studies