Associations between light exposure and sleep timing and sleepiness while awake in a sample of UK adults in everyday life.

ABSTRACT: Experimental and interventional studies show that light can regulate sleep timing and sleepiness while awake by setting the phase of circadian rhythms and supporting alertness. The extent to which differences in light exposure explain variations in sleep and sleepiness within and between individuals in everyday life remains less clear. Here, we establish a method to address this deficit, incorporating an open-source wearable wrist-worn light logger (SpectraWear) and smartphone-based online data collection. We use it to simultaneously record longitudinal light exposure (in melanopic equivalent daylight illuminance), sleep timing, and subjective alertness over seven days in a convenience sample of 59 UK adults without externally imposed circadian challenge (e.g., shift work or jetlag). Parti

SUBMITTER: Didikoglu A 

PROVIDER: S-EPMC10589638 | biostudies-literature | 2023 Oct

REPOSITORIES: biostudies-literature