5. Conclusions
insomnia, sleep disorder, daytime sleepiness
In this open-label feasibility study, we found that morning LT improved daytime sleepiness in adults with insomnia. We suggest that morning LT could improve the quality of life of adults with daytime sleepiness. Further large, randomized, controlled trials are needed to identify the impact of LT on the typology of sleep disorder, sleep parameters, hormones, circadian rhythm, and other individual variations.