Lipids and Atherosclerosis Unit, Department of Internal Medicine, Maimonides Biomedical Research Institute of Córdoba (IMIBIC), Reina Sofía University Hospital, University of Córdoba, Córdoba, Spain.
Department of Environmental Health, Harvard T.H. Chan School of Public Health, Boston, MA, United States.
Front Endocrinol (Lausanne). 2021 Nov 11;12:772848. doi: 10.3389/fendo.2021.772848. eCollection 2021.
Cardiovascular disease is the leading cause of on-duty fatalities among U.S. firefighters. Research has demonstrated that many modifiable risk factors are contributors to the high prevalence of cardiometabolic risk factors. The current study aimed to assess whether sleep is associated with cardiometabolic risk factors among Indianapolis firefighters. The findings could support improving sleep hygiene in this population.
This cross-sectional study was conducted from the baseline data of eligible firefighters enrolled in "Feeding America's Bravest", a Mediterranean diet lifestyle intervention within the Indiana Fire Departments. Participants' sleep quality was categorized as "good" (≤ 8 points) or "bad" (>8 points) by a sleep quality questionnaire based on some questions from Pittsburgh Sleep Quality Index. In addition, firefighters' sleep duration was stratified based on the number of hours slept per night (≤6 as "short sleep" or >6 hours as normal). Linear and logistic regression models were used to examine the association of sleep with cardiometabolic risk factors.
A total of 258 firefighters were included. Bad sleepers had higher weight, greater waist circumference, higher body mass index (BMI), and increased body fat (all p<0.01) compared to good sleepers. Similarly, participants with short sleep duration were heavier (p<0.02), had greater BMI (p<0.02) and increased body fat (p<0.04) compared with participants with normal sleep duration. Both bad and short sleepers had a higher prevalence of hypertension and obesity (p <0.05).
Our study supports that both sleep quality and quantity are associated with cardiometabolic risk among firefighters.
心血管疾病是美国消防员在职死亡的主要原因。研究表明，许多可改变的风险因素是导致心血管代谢危险因素高发的原因。本研究旨在评估睡眠质量是否与印第安纳波利斯消防员的心血管代谢危险因素有关。研究结果可能有助于改善该人群的睡眠卫生。
这是一项横断面研究，研究对象为参加“喂养美国最勇敢的人”计划的合格消防员，该计划是印第安纳州消防部门开展的地中海饮食生活方式干预计划。根据匹兹堡睡眠质量指数中的一些问题，参与者的睡眠质量通过睡眠质量问卷被分为“好”（≤8 分）或“差”（>8 分）。此外，根据消防员每晚的睡眠时间（≤6 小时为“短睡眠”或>6 小时为正常）对睡眠时长进行分层。线性和逻辑回归模型用于检查睡眠与心血管代谢危险因素之间的关联。
共纳入 258 名消防员。与睡眠质量好的消防员相比，睡眠质量差的消防员体重更大、腰围更大、体重指数（BMI）更高、体脂增加（均 P<0.01）。同样，与睡眠正常的消防员相比，睡眠不足 6 小时的消防员体重更重（P<0.02），BMI 更高（P<0.02），体脂增加（P<0.04）。睡眠质量差和睡眠不足的消防员高血压和肥胖的患病率更高（P<0.05）。
我们的研究支持睡眠质量和数量都与消防员的心血管代谢危险因素有关。
