The effect of blue-enriched white light on cognitive performances and sleepiness of night-shift workers: A field study

Physiology & Behavior
Majid MotamedzadehRashid Heidarimoghadam

Abstract

Night-shift works are basically accompanied by reduced cognitive performance, sleepiness, and higher possibility for human error and related incidents. It is therefore crucial to improve individuals' performance and alertness in sensitive places like industries' control room with the ultimate goal of increasing efficiency and reducing the number of possible incidents. Previous research has indicated that blue light is a critical cue for entraining circadian rhythm. As a result, the present study was an attempt to investigate whether blue-enriched white light illumination was a practical strategy to decrease sleepiness and improve cognitive performance during night shifts. The study, which adopted a before-after interventional design, was conducted among 30 control room staff members of petrochemical industry. After baseline assessments under existing lighting conditions, every participant was exposed to two new lighting conditions (namely, 17,000K and 6500K blue-enriched white light), each lasting for a week. Assessments were conducted again at the end of these treatments. In order to measure the subjective sleepiness, Karolinska Sleepiness Scale (KSS) was utilized. Subjects also performed the Conners' Continuous Performance Te...Continue Reading

Citations

Mar 16, 2018·International Journal of Environmental Research and Public Health·Minqi YangGuofu Zhou
Oct 27, 2018·Annals of Occupational and Environmental Medicine·Reza KazemiMokarami Hamidreza
Sep 18, 2018·Journal of Circadian Rhythms·Taleb AskaripoorMehdi Samavati
Sep 12, 2019·Health Promotion Perspectives·Reza KazemiZahra Zamanian
May 27, 2020·Journal of Nursing Management·Jeong Hun Kim, Yeoungsuk Song
Nov 15, 2018·Critical Care : the Official Journal of the Critical Care Forum·John E GriepentrogMatthew R Rosengart
Feb 16, 2021·Frontiers in Neurology·Kevin W Houser, Tony Esposito
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Apr 4, 2021·Brain Sciences·Anne WeigandMalek Bajbouj
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Jan 1, 2022·Journal of Biological Rhythms·Diane B BoivinAnastasi Kosmadopoulos

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