Tailored light intervention for sleep and cognition in World Trade Center (WTC) cohort.

IF 0.9

Archives of environmental & occupational health Pub Date : 2025-09-17 DOI:10.1080/19338244.2025.2561834

Ola A Alsalman, Weixin Li, Rafael E de la Hoz, Mariana G Figueiro

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Abstract

World Trade Center rescue and recovery workers and volunteers (WTC RRWV) are vulnerable to circadian rhythm disruption due to stress and environmental exposures during the 9/11 operation, with high rates of cognitive impairment and poor sleep quality. This exploratory pilot study assessed the feasibility and preliminary effect of a 12-week light-based intervention targeting sleep and cognition. Twenty-three WTC RRWV aged ≥50 years with mild cognitive impairment and sleep disturbances completed the intervention. Sleep, cognition, and circadian-effective light exposures were measured pre-and post-intervention using actigraphy, Pittsburgh Sleep Quality Index, cognitive tasks (go/no-go, digit span, Stroop), and a Daysimeter. Results showed significant improvements in sleep quality and cognitive performance. Greater circadian-effective light exposure was positively associated with improved cognitive accuracy. These preliminary observations suggest that light-based interventions may enhance sleep and cognitive function in at-risk populations.

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定制光干预对世界贸易中心（WTC）队列睡眠和认知的影响。

世贸中心救援和恢复工作人员和志愿者（WTC RRWV）在9/11行动期间，由于压力和环境暴露，容易受到昼夜节律紊乱的影响，认知障碍的发生率高，睡眠质量差。这项探索性的试点研究评估了为期12周的以睡眠和认知为目标的基于光的干预的可行性和初步效果。23名年龄≥50岁，伴有轻度认知障碍和睡眠障碍的WTC RRWV完成了干预。采用活动记录仪、匹兹堡睡眠质量指数、认知任务（走/不走、数字跨度、Stroop）和日晷测量干预前后的睡眠、认知和昼夜有效光照。结果显示睡眠质量和认知能力有显著改善。更大的对昼夜节律有效的光照与认知准确性的提高呈正相关。这些初步观察结果表明，基于光的干预可能会改善高危人群的睡眠和认知功能。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Archives of environmental & occupational health

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