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International Archives of Occupational and Environmental Health

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02-03-2024 | Original Article

Effects of chronotype on sleep, mood and cardiovascular circadian rhythms in rotating night shift medical workers

Authors: Jinzhen Jiang, Guohua Chen, Xinhua Song, Jiajia Lu, Jing Wang, Fengfei Ding, Li Ba, Junhua Mei

Published in: International Archives of Occupational and Environmental Health | Issue 4/2024

Abstract

Purpose

Whether chronotype affects the health outcomes of night shift work populations is unknown. This study aimed to assess the influence of different chronotypes in the rotating night shift population on sleep status, mood, blood pressure (BP), and heart rate variability (HRV), as well as the circadian rhythm of BP and HRV.

Methods

A total of 208 rotating night shift workers were included. All participants completed structured questionnaires to assess chronotype, mood and sleep status. During their daily lives outside of the night shift, they underwent 24-hour Holter electrocardiogram monitoring and 24-hour ambulatory blood pressure monitoring. Day-time and night-time BP and BP dipping were obtained. Day-time and night-time HRV values (SDNN, RMSSD, LF, HF, LF nu, SD1, SD2 and SD2/SD1) were calculated and fitted to the cosine period curve. Three circandian parameters (mesor, amplitude and acrophase) were extracted to quantify the circadian rhythm of the HRV indices.

Results

Among all three groups, E-type showed more fatigue and sleepiness. In addition, E-type showed blunted diastolic BP dipping. Notably, E-type showed association with higher RMSSD, LF, HF and SD1 in the night time, and higher mesors of RMSSD and LF and amplitude of SD2/SD1 in circadian analysis.

Conclusion

Chronotype is a factor affecting fatigue, sleepiness and cardiovascular circadian rhythms of rotating night shift workers. Chronotype should be taken into consideration for managing night-shift rotation to promote occupational health.

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Title: Effects of chronotype on sleep, mood and cardiovascular circadian rhythms in rotating night shift medical workers
Authors: Jinzhen Jiang
Guohua Chen
Xinhua Song
Jiajia Lu
Jing Wang
Fengfei Ding
Li Ba
Junhua Mei
Publication date: 02-03-2024
Publisher: Springer Berlin Heidelberg
Published in: International Archives of Occupational and Environmental Health / Issue 4/2024
Print ISSN: 0340-0131
Electronic ISSN: 1432-1246
DOI: https://doi.org/10.1007/s00420-024-02060-4

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Effects of chronotype on sleep, mood and cardiovascular circadian rhythms in rotating night shift medical workers

Abstract

Purpose

Methods

Results

Conclusion

Keynote webinar | Spotlight on medication adherence

Springer Medicine

Abstract

Purpose

Methods

Results

Conclusion

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