Separate and Joint Associations of Shift Work and Sleep Quality with Lipids.
10.1016/j.shaw.2015.11.007
- Author:
Luenda E CHARLES
1
;
Ja K GU
;
Cathy A TINNEY-ZARA
;
Desta FEKEDULEGN
;
Claudia C MA
;
Penelope BAUGHMAN
;
Tara A HARTLEY
;
Michael E ANDREW
;
John M VIOLANTI
;
Cecil M BURCHFIEL
Author Information
1. Biostatistics and Epidemiology Branch, Health Effects Laboratory Division, National Institute for Occupational Safety and Health, Centers for Disease Control and Prevention, Morgantown, WV, USA. lcharles@cdc.gov
- Publication Type:Original Article
- Keywords:
lipids;
police officers;
sleep quality;
work schedules
- MeSH:
Biomarkers;
Buffaloes;
Cholesterol;
Female;
Humans;
Joints*;
Lipoproteins;
Police;
Triglycerides
- From:Safety and Health at Work
2016;7(2):111-119
- CountryRepublic of Korea
- Language:English
-
Abstract:
BACKGROUND: Shift work and/or sleep quality may affect health. We investigated whether shift work and sleep quality, separately and jointly, were associated with abnormal levels of triglycerides, total cholesterol (TC), and low-and high-density lipoprotein cholesterol in 360 police officers (27.5% women). METHODS: Triglycerides, TC, and high-density lipoprotein were analyzed on the Abbott Architect; low-density lipoprotein was calculated. Shift work was assessed using City of Buffalo payroll work history records. Sleep quality (good, ≤ 5; intermediate, 6-8; poor, ≥ 9) was assessed using the Pittsburgh Sleep Quality Index questionnaire. A shift work + sleep quality variable was created: day plus good sleep; day plus poor sleep; afternoon/night plus good; and poor sleep quality. Mean values of lipid biomarkers were compared across categories of the exposures using analysis of variance/analysis of covariance. RESULTS: Shift work was not significantly associated with lipids. However, as sleep quality worsened, mean levels of triglycerides and TC gradually increased but only among female officers (age- and race-adjusted p = 0.013 and 0.030, respectively). Age significantly modified the association between sleep quality and TC. Among officers ≥ 40 years old, those reporting poor sleep quality had a significantly higher mean level of TC (202.9 ± 3.7 mg/dL) compared with those reporting good sleep quality (190.6 ± 4.0 mg/dL) (gender- and race-adjusted p = 0.010). Female officers who worked the day shift and also reported good sleep quality had the lowest mean level of TC compared with women in the other three categories (p = 0.014). CONCLUSION: Sleep quality and its combined influence with shift work may play a role in the alteration of some lipid measures.
