Benefits of Light in the Radiographic Environment to Improve Sleep and Well-being

What this Trial Is About

Researchers are investigating whether different lighting conditions can improve alertness, energy, well-being, and sleep quality among radiographers working in a radiology department. The study aims to identify the best light setting, or "light recipe," that benefits staff the most by comparing standard lighting to enhanced lighting environments. This research uses a quasi-experimental crossover design, allowing each participant to experience both lighting conditions for accurate comparison. Participants will work in either an enhanced light environment, where a floor lamp mimics natural daylight, or a non-enhanced light environment with the lamp turned off. These conditions will each last two weeks before switching, and this cycle will repeat across four different light recipes. The study will take place during darker months and involve 18 radiology staff members at up to 20 workstations. Throughout the study, participants will complete surveys about their sleep, energy, and well-being, including the Karolinska Sleepiness Scale, PROMIS Sleep Disturbance, and WHO-5 Well-Being Index. They will also wear activity bands to track sleep objectively outside work hours and provide saliva samples to measure cortisol and melatonin levels. Measurements will be taken regularly over 16 to 20 weeks, depending on the inclusion timing. This detailed monitoring helps assess how lighting affects staff health and performance.

Light in Healthcare Environment (Ljus i sjukhusmiljö)