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.
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.
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.
Future studies into on-duty injury and sleep should examine body composition as an effect modifier among career firefighters.
Center 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).
Address correspondence to: Christopher M. Kaipust, PhD, MPH, 1920 W 143rd Street, Suite 120, Leawood, KS 66224 (firstname.lastname@example.org).
Clinical Significance: Health care professionals should discuss weight management and sleep habits with male career firefighters to improve personal health and occupational health and safety, particularly on-duty injury.
Funding: Assistance to Firefighters Grants program managed by the Federal Emergency Management Agency in the Department of Homeland Security (EMW-2007-FP-02571 and EMW-2009-FP-01971).
National Institute for Occupational Safety and Health (NIOSH) Southwest Center for Occupational and Environmental Health (SWCOEH) Education and Research Center Grant No. 5T42OH008421.
Conflicts of Interest: None Declared.