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Age differences in workplace intervention effects on employees’ nighttime and daytime sleep
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Details:
  • Pubmed ID:
    28105463
  • Pubmed Central ID:
    PMC5241086
  • Funding:
    U01 HD051217/HD/NICHD NIH HHS/United States
    U01 HD051256/HD/NICHD NIH HHS/United States
    U01 OH008788/OH/NIOSH CDC HHS/United States
    U01 AG027669/AG/NIA NIH HHS/United States
    R01 HL107240/HL/NHLBI NIH HHS/United States
    U01 HD059773/HD/NICHD NIH HHS/United States
    U01 HD051276/HD/NICHD NIH HHS/United States
    U01 HD051218/HD/NICHD NIH HHS/United States
  • Document Type:
  • Collection(s):
  • Description:
    Objectives

    To examine the effects of a workplace flexibility/support intervention on employees’ sleep quantity and quality during nights and days and whether the effects differ by employee age.

    Design

    Cluster-randomized controlled trial.

    Setting

    Information technology industry workplaces.

    Participants

    US employees (Mage = 46.9 years) at an information technology firm who provided actigraphy at baseline and a 12-month follow-up (N = 396; n = 195 intervention, n = 201 control).

    Intervention

    The Work, Family, and Health Study intervention aimed to increase workplace flexibility and support. The intervention consisted of facilitated discussions to help employees increase control over when and where they work as well as manager-specific training sessions to increase manager support for employees’ work-family issues.

    Measurements

    Nighttime sleep duration, wake after sleep onset (WASO), and nap duration were measured with wrist actigraphy. Day-to-day variability in these variables (min2) was also estimated.

    Results

    Intervention employees increased nighttime sleep duration at 12 months, by 9 minutes per day, relative to control employees. There were interaction effects between the intervention and age on daytime nap duration and day-to-day variability in WASO. Older employees (56–70 years) in the intervention condition decreased nap duration at 12 months relative to older employees in the control condition. Older employees in the intervention condition also exhibited a greater decrease in day-to-day variability of WASO at 12 months compared with their baseline.

    Conclusions

    The workplace flexibility/support intervention was effective in enhancing employees’ sleep health by increasing nighttime sleep duration. Furthermore, the intervention was particularly effective for older employees in decreasing their daytime nap duration and day-to-day variability in WASO.