Shattuck Nita Lewis, Matsangas Panagiotis
Human Systems Integration Program, Operations Research Department, 48848Naval Postgraduate School, Monterey, CA, USA.
Nutr Health. 2021 Mar;27(1):3-8. doi: 10.1177/0260106020960878. Epub 2020 Oct 27.
Due to their long workdays and erratic watch schedules, sailors on United States Navy (USN) ships often eat meals close to their bedtime, which may contribute to sleep disruption.
To assess the duration of meal-to-sleep (M-S) intervals in relation to timing of sailor workdays and watch schedules.
Longitudinal field assessment of USN sailors performing their underway duties ( = 234). Participants completed questionnaires, wore actigraphs, and completed activity logs.
Approximately 35% of M-S intervals were <3 h in duration. M-S interval duration was associated with watchstanding status ( < 0.001) and the number of sections in the watchstanding schedule ( < 0.001). Sailors on the two-section watch schedule had, on average, the shortest M-S intervals (55 min) compared to sailors on three- or four-section watchbills (∼4 h) and to non-watchstanders (4.85 h).
Sailors on two-section watchbills often eat quite close to bedtime. To provide appropriate recommendations regarding healthy dietary patterns, we will continue assessing dietary behaviors and food choices of sailors while underway, especially as they relate to sailor work hours, circadian rhythms, and sleep practices.
由于工作日漫长且值班表不固定，美国海军舰艇上的水手经常在接近就寝时间用餐，这可能会导致睡眠中断。
评估进餐至睡眠（M-S）间隔时间与水手工作日时间安排和值班表的关系。
对执行海上任务的美国海军水手进行纵向实地评估（n = 234）。参与者完成问卷调查、佩戴活动记录仪并填写活动日志。
约35%的M-S间隔时间短于3小时。M-S间隔时间与值班状态（P < 0.001）和值班表中的班次数量（P < 0.001）相关。与三班或四班值班表的水手（约4小时）和非值班人员（4.85小时）相比，两班值班表的水手平均M-S间隔时间最短（55分钟）。
两班值班表的水手用餐时间通常非常接近就寝时间。为了提供有关健康饮食模式的适当建议，我们将继续评估水手在航行中的饮食行为和食物选择，特别是与水手工作时间、昼夜节律和睡眠习惯相关的方面。
