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Published on: August 8, 2019
Cardiovascular Risk Factors in 101 Night-shift and Day Workers in Industry: A Cross-sectional Study
Marit Skogstad1, Sarah Alsaedi, Per Anton Sirnes
1From the National Institute of Occupational Health (STAMI), Oslo, Norway (M.S., S.A., Ø.S., E.G., L.O.G., D.M., E.Z.B.); Cardiology, Sykehuset i Vestfold HF, Tønsberg, Norway (P.A.S.); School of Health Sciences, Kristiania University College, Oslo, Norway (A.M.); and Department of Medical Biochemistry, Oslo University Hospital, 0450 Oslo, Norway (H.C.D.A.).
Objective:
This cross-sectional study assesses cardiovascular disease (CVD) risk factors in industrial rotating night-shift and day workers.
Methods:
We examined 27 day workers, 40 night-shift workers with high night load, and 34 night-shift workers with low night loads. We assessed sleep, blood pressure, pulse wave velocity, carotid intima-media thickness, maximal oxygen uptake ( ), glycosylated hemoglobin, lipids, focusing on inflammatory markers, and adipokines.
Results:
High-load night-shift workers had higher inflammation and lower adiponectin level compared with other shift workers and day workers. Night shifts of 8 and 12 hours shortened sleep. The number of night shifts was positively associated with inflammatory markers and negatively associated with adiponectin.
Conclusions:
Night-shift work is associated with CVD risk factors. Shift schedules with fewer night shifts and longer recovery periods could mitigate it.
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