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Light Treatment to Shift-working Nurses

U

University of Bergen

Status

Completed

Conditions

Shift-Work Sleep Disorder

Treatments

Behavioral: Red light
Behavioral: Bright light

Study type

Interventional

Funder types

Other

Identifiers

NCT02978053
UiB112016

Details and patient eligibility

About

This project examines 1) the effects of appropriately timed bright light on adaptation (in terms of sleep and sleepiness) to three consecutive night shifts; and 2) the effects of such bright light on re-adaptation (in terms of sleep and sleepiness) to a day-oriented schedule after the night shift period.

Full description

Shift workers frequently experience sleepiness during night shifts, which may have consequences for performance. Sleep duration is often shortened after a night shift. Properly timed bright light treatment is efficient in delaying the circadian rhythm and can enhance alertness, increase performance and prolong sleep after night shifts. There is a lack of studies on light treatment to rotating shift workers. This study is a randomized controlled crossover trial evaluating the effect of bright light treatment on sleep and sleepiness in rotating shift workers with three consecutive night shifts. The aim is to evaluate whether bright light treatment improves adaptation to three consecutive night shifts (reduces sleepiness during night shifts and improves sleep after night shifts), as well as whether such treatment affects re-adaptation to a day-oriented schedule after the night shift period.

Enrollment

35 patients

Sex

All

Ages

18+ years old

Volunteers

Accepts Healthy Volunteers

Inclusion criteria

  • A rotating shift work schedule involving three days without night shifts, followed by three consecutive night shifts, followed by three days without night shifts
  • Problems with sleepiness during night shifts

Exclusion criteria

  • Pregnancy

Trial design

Primary purpose

Treatment

Allocation

Randomized

Interventional model

Crossover Assignment

Masking

Triple Blind

35 participants in 2 patient groups, including a placebo group

Bright light
Experimental group
Description:
10 000 lux
Treatment:
Behavioral: Bright light
Red light
Placebo Comparator group
Description:
400 lux
Treatment:
Behavioral: Red light

Trial contacts and locations

1

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Data sourced from clinicaltrials.gov

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