A circadian-informed lighting intervention accelerates circadian adjustment to a night work schedule in a submarine lighting environment.

ABSTRACT:

Study objective

Night work has detrimental impacts on sleep and performance, primarily due to misalignment between sleep-wake schedules and underlying circadian rhythms. This study tested whether circadian-informed lighting accelerated circadian phase delay, and thus adjustment to night work, compared to blue-depleted standard lighting under simulated submariner work conditions.

Methods

Nineteen healthy sleepers (12 males; mean ± SD aged 29 ± 10 years) participated in two separate 8-day visits approximately 1 month apart to receive, in random order, circadian-informed lighting (blue-enriched and dim, blue-depleted lighting at specific times) and standard lighting (dim, blue-depleted lighting). After an adaptation night (day 1), salivary dim-light melatonin onset (DLMO) asses

SUBMITTER: Guyett A 

PROVIDER: S-EPMC11543615 | biostudies-literature | 2024 Nov

REPOSITORIES: biostudies-literature