Researchers from Flinders University in Adelaide conducted a study suggesting that artificial light exposure during night shifts may improve sleep quality and reduce errors among workers. Led by Hannah Scott, the team examined 19 adult workers under two different lighting conditions.
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In one scenario, participants were exposed to what the study termed "circadian-informed lighting," which aims to realign the body's circadian rhythms. The second lighting setup involved dim, blue-depleted illumination, simulating the low-light conditions typical of submarines. Each lighting condition was tested over an eight-day period.
Findings indicated that workers under circadian-informed lighting made nearly half as many errors compared to the other group. Additionally, those exposed to this type of lighting reported better sleep quality, increased alertness, and reduced feelings of sleepiness.
Co-author Alisha Guyett, a doctoral student at Flinders, emphasized that such "strategic lighting interventions" could significantly enhance the performance, sleep, safety, and overall well-being of night shift workers facing suboptimal lighting conditions. The findings were published in the journal Sleep.