Boubekri M, Cheung IN, Reid KJ, Wang CH, Zee PC

STUDY OBJECTIVE: This research examined the impact of daylight exposure on the health of office workers from the perspective of subjective well-being and sleep quality as well as actigraphy measures of light exposure, activity, and sleep-wake patterns.

RESULTS: Workers in windowless environments reported poorer scores than their counterparts on two SF-36 dimensions–role limitation due to physical problems and vitality–as well as poorer overall sleep quality from the global PSQI score and the sleep disturbances component of the PSQI. Compared to the group without windows, workers with windows at the workplace had more light exposure during the workweek, a trend toward more physical activity, and longer sleep duration as measured by actigraphy.

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