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Sleep. 2023 Jul 9:zsad179. doi: 10.1093/sleep/zsad179. Online ahead of print.
ABSTRACT
The prevalence of artificial light exposure has enabled us to be active any time of the day or night, leading to the need for high alertness outside of traditional daytime hours. To address this need, we developed a personalized sleep intervention framework that analyzes real-world sleep-wake patterns obtained from wearable devices to maximize alertness during specific target periods. Our framework utilizes a mathematical model that tracks the dynamic sleep pressure and circadian rhythm based on the user’s sleep history. In this way, the model accurately predicts real-time alertness, even for shift workers with complex sleep and work schedules (N=71, t=13~21days). This allowed us to discover a new sleep-wake pattern called the Adaptive Circadian Split Sleep (ACSS), which incorporates a main sleep period and a late nap to enable high alertness during both work and non-work periods of shift workers. We further developed a mobile application that integrates this framework to recommend practical, personalized sleep schedules for individual users to maximize their alertness during a targeted activity time based on their desired sleep onset and available sleep duration. This can reduce the risk of errors for those who require high alertness during non-traditional activity times and improve the health and quality of life for those leading shift work-like lifestyles.
PMID:37422720 | DOI:10.1093/sleep/zsad179
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