Use of Consumer Sleep Technology to Treat Shift Work Disorder (SHIFT)

  • STATUS
    Recruiting
  • End date
    Jan 31, 2025
  • participants needed
    50
  • sponsor
    Henry Ford Health System
Updated on 8 July 2022

Summary

The purpose of this study is to examine the effectiveness of a personalized light exposure schedule for Shift Work Disorder (SWD) in night shift workers compared to a non-personalized light exposure schedule.

Description

Participants will be randomized into each condition (n = 25) in a 1:1 ratio. Variables of interest, dim light melatonin onset (DLMO) and shift work disorder (SWD) symptoms, will be assessed before and after the intervention, which will last two weeks. All participants (N=50) will be asked to wear an Apple Watch for two weeks leading up to an in-lab visit. Activity data collection from the Apple Watch will be processed through a mathematical model of the human circadian pacemaker (previously validated in SWD) to generate estimates of DLMO. This two-week period is followed by a 27-hour laboratory visit for pre-treatment assessment of DLMO (hourly saliva melatonin samples over 24 hours). At the end of this visit, participants will receive an orientation to the SHIFT mobile application, where they will be able to assess their prescribed light exposure schedule.

Details
Condition Shift-work Disorder
Treatment Phototherapy
Clinical Study IdentifierNCT05186233
SponsorHenry Ford Health System
Last Modified on8 July 2022

Eligibility

Yes No Not Sure

Inclusion Criteria

Participants must work at least 2 night shifts a week
Participants must have night shifts starting between 18:00 and 02:00 and lasting 8 to 12 hours
Participants must have maintained this night shift schedule for at least 6 months
Participants must have Shift Work Disorder, diagnosed based on ICSD-3 criteria

Exclusion Criteria

Medical history of central nervous system disorders
Medical history of other sleep disorders
Diagnosis of an unstable major medical condition medical chart review
Dependence on alcohol (≥ 4 beverages a day)
Heavy tobacco use (≥ 10 cigarettes per day)
Recreational drug use
Use of medications impacting central nervous system functioning
Caffeine use in excess of 5-6 servings (~ 600mg) per day
Pregnancy
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