Circadian and Biological Rhythms in Shift Workers—A Firefighter’s Study

Duarte, I.F.; Pereira, J.; Lima, JPM.; Simões, H.; Pereira, T.; Conde, J.

http://hdl.handle.net/10400.8/10022

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Abstract(s)

Shift Work contribute to dysregulation of the typical sleep and awake periods that cause circadian distortions, increasing the risk of cardiovascular mortality and morbidity and developing metabolic diseases. Firefighting is a career that demands much of individuals and has a great impact on their health, making it a high-risk job. Objectives: This study aims to characterize shift workers’ blood pressure profiles in an attempt to understand the repercussions of shift work on the circadian blood pressure rhythm in a sample of professional firefighters. Materials and methods: Participants were classified based on their dipping status: dipper drop of 10–20%; non-dipper 0–10%; invert-dipper when there is a rise in BP; extreme-dipper superior to 20%. Results: Abnormal dipping was found in 55.6% of the participants, and there was a marked difference in gender in percentage where dipping is concerned, with 66.7% of women having abnormal dipping against 50% of the men. It was proved that men had a slower heart rate than women (p-value = 0.029) and that dippers had a higher 24 h DBP compared with those of abnormal dipping (p-value = 0.049). Conclusions: Shift work is a high-risk module of labor, and its consequences require a more thorough examination. Abnormal dip- ping prevailed in firefighters, and the differences between genders need to be better characterized in future studies. © The Author(s), under exclusive license to Springer Nature Switzerland AG 2024.

Description

Part of the book series: Studies in Systems, Decision and Control (SSDC, volume 492).

Keywords

Blood pressure dipping Circadian rhythm Firefighters Shift workers

URI

http://hdl.handle.net/10400.8/10022

Citation

Duarte, I.F., Pereira, J., Lima, J.P.M., Simões, H., Pereira, T., Conde, J. (2024). Circadian and Biological Rhythms in Shift Workers—A Firefighter’s Study. In: Arezes, P.M., et al. Occupational and Environmental Safety and Health V. Studies in Systems, Decision and Control, vol 492. Springer, Cham. https://doi.org/10.1007/978-3-031-38277-2_18