The effects of dynamic daylight-like light on the rhythm, cognition, and mood of irregular shift workers in closed environment
Abstract Shift workers are mostly suffered from the disruption of circadian rhythm and health problems. In this study, we designed proper light environment to maintain stable circadian rhythm, cognitive performance, and mood status of shift workers. We used five-channel light-emitting diodes to buil...
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Nature Portfolio
2021
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oai:doaj.org-article:732d23ce4fae4cc0b796999495a697f92021-12-02T16:05:54ZThe effects of dynamic daylight-like light on the rhythm, cognition, and mood of irregular shift workers in closed environment10.1038/s41598-021-92438-y2045-2322https://doaj.org/article/732d23ce4fae4cc0b796999495a697f92021-06-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-92438-yhttps://doaj.org/toc/2045-2322Abstract Shift workers are mostly suffered from the disruption of circadian rhythm and health problems. In this study, we designed proper light environment to maintain stable circadian rhythm, cognitive performance, and mood status of shift workers. We used five-channel light-emitting diodes to build up the dynamic daylight-like light environment. The illuminance, correlated color temperature, and circadian action factor of light were tunable in the ranges of 226 to 678 lx, 2680 to 7314 K, and 0.32 to 0.96 throughout the day (5:30 to 19:40). During the nighttime, these parameters maintained about 200 lx, 2700 K, and 0.32, respectively. In this light environment, three subjects had engaged in shift work for 38 consecutive days. We measured plasma melatonin, activity counts, continuous performance tests, and visual analogue scale on mood to assess the rhythm, cognitive performance, and mood of subjects. After 38-day shift work, the subjects’ peak melatonin concentration increased significantly. Their physiological and behavioral rhythms maintained stable. Their cognitive performance improved significantly after night work, compared with that before night work. Their mood status had no significant change during the 38-day shift work. These results indicated that the light environment was beneficial to maintain circadian rhythm, cognitive performance and mood status during long-term shift work in closed environment.Jingxin NieTianhang ZhouZhizhong ChenWeimin DangFei JiaoJinglin ZhanYifan ChenYiyong ChenZuojian PanXiangning KangYongzhi WangQi WangYan TangWentian DongShuzhe ZhouYantao MaXin YuGuoyi ZhangBo ShenNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-11 (2021) |
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DOAJ |
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EN |
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Medicine R Science Q |
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Medicine R Science Q Jingxin Nie Tianhang Zhou Zhizhong Chen Weimin Dang Fei Jiao Jinglin Zhan Yifan Chen Yiyong Chen Zuojian Pan Xiangning Kang Yongzhi Wang Qi Wang Yan Tang Wentian Dong Shuzhe Zhou Yantao Ma Xin Yu Guoyi Zhang Bo Shen The effects of dynamic daylight-like light on the rhythm, cognition, and mood of irregular shift workers in closed environment |
| description |
Abstract Shift workers are mostly suffered from the disruption of circadian rhythm and health problems. In this study, we designed proper light environment to maintain stable circadian rhythm, cognitive performance, and mood status of shift workers. We used five-channel light-emitting diodes to build up the dynamic daylight-like light environment. The illuminance, correlated color temperature, and circadian action factor of light were tunable in the ranges of 226 to 678 lx, 2680 to 7314 K, and 0.32 to 0.96 throughout the day (5:30 to 19:40). During the nighttime, these parameters maintained about 200 lx, 2700 K, and 0.32, respectively. In this light environment, three subjects had engaged in shift work for 38 consecutive days. We measured plasma melatonin, activity counts, continuous performance tests, and visual analogue scale on mood to assess the rhythm, cognitive performance, and mood of subjects. After 38-day shift work, the subjects’ peak melatonin concentration increased significantly. Their physiological and behavioral rhythms maintained stable. Their cognitive performance improved significantly after night work, compared with that before night work. Their mood status had no significant change during the 38-day shift work. These results indicated that the light environment was beneficial to maintain circadian rhythm, cognitive performance and mood status during long-term shift work in closed environment. |
| format |
article |
| author |
Jingxin Nie Tianhang Zhou Zhizhong Chen Weimin Dang Fei Jiao Jinglin Zhan Yifan Chen Yiyong Chen Zuojian Pan Xiangning Kang Yongzhi Wang Qi Wang Yan Tang Wentian Dong Shuzhe Zhou Yantao Ma Xin Yu Guoyi Zhang Bo Shen |
| author_facet |
Jingxin Nie Tianhang Zhou Zhizhong Chen Weimin Dang Fei Jiao Jinglin Zhan Yifan Chen Yiyong Chen Zuojian Pan Xiangning Kang Yongzhi Wang Qi Wang Yan Tang Wentian Dong Shuzhe Zhou Yantao Ma Xin Yu Guoyi Zhang Bo Shen |
| author_sort |
Jingxin Nie |
| title |
The effects of dynamic daylight-like light on the rhythm, cognition, and mood of irregular shift workers in closed environment |
| title_short |
The effects of dynamic daylight-like light on the rhythm, cognition, and mood of irregular shift workers in closed environment |
| title_full |
The effects of dynamic daylight-like light on the rhythm, cognition, and mood of irregular shift workers in closed environment |
| title_fullStr |
The effects of dynamic daylight-like light on the rhythm, cognition, and mood of irregular shift workers in closed environment |
| title_full_unstemmed |
The effects of dynamic daylight-like light on the rhythm, cognition, and mood of irregular shift workers in closed environment |
| title_sort |
effects of dynamic daylight-like light on the rhythm, cognition, and mood of irregular shift workers in closed environment |
| publisher |
Nature Portfolio |
| publishDate |
2021 |
| url |
https://doaj.org/article/732d23ce4fae4cc0b796999495a697f9 |
| work_keys_str_mv |
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