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Sleep, Obesity, and Injury Among US Male Career Firefighters
Christopher M Kaipust1, Sara A Jahnke, Walker S C Poston
1Center for Fire, Rescue & EMS Health Research, National Development & Research Institutes, Leawood, Kansas (Dr Kaipust, Dr Jahnke, Dr Poston, Dr Jitnarin, Dr Haddock); Division of Epidemiology, Human Genetics, and Environmental Sciences, University of Texas Health Science Center at Houston School of Public Health, Texas (Dr Kaipust, Dr Day, Dr Delclos).
Objective:
The aim of this study was to determine the role of obesity on the association between sleep and on-duty injury among male career firefighters.
Methods:
Data on 1419 male career firefighters for this cross-sectional study came from two firefighter cohorts from 2008 to 2013. On-duty injury within the past 6 to 12 months was the dependent variable and getting enough sleep was the independent variable. A multivariable, mixed effect logistic regression model stratified by body mass index (BMI) categories was created to examine the presence of effect measure modification.
Results:
Only obese firefighters who did not get enough sleep were twice as likely to have an on-duty injury than those who got enough sleep. This association was not significant among normal or overweight firefighters.
Conclusions:
Future studies into on-duty injury and sleep should examine body composition as an effect modifier among career firefighters.
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