Mirghani Hyder Osman, Albalawi Khalid Saleh, Alali Omar Yarub, Albalawi Waled Mohammed, Albalawi Khalid Mohammed, Aljohani Talal Rabea, Albalawi Wedyan Saleh
Faculty of Medicine, University of Tabuk, Saudi Arabia.
Pan Afr Med J. 2019 Dec 5;34:178. doi: 10.11604/pamj.2019.34.178.16250. eCollection 2019.
There is an increasing awareness regarding meal timing and chronotype. The present study aimed to assess breakfast skipping, late dinner intake, and chronotype among Saudi medical students.
A cross-sectional study was conducted among 169 clinical phase medical students during the period from January to May 2017. A self-administered questionnaire was used to report the frequency and timing of breakfast and dinner. In addition, the previous cumulative grade average, bedtime, wake-up time, and sleep duration during working days and weekends were reported. The chronotype was calculated from mid-sleep and wakeup time during weekends and sleep dept. The student's weight and height were measured to assess the body mass index (BMI). Participants also completed a diary detailing their sleep habits for two weeks before filling out the questionnaire. The chi-square and Pearson's correlation were used for the statistical analysis.
Out of 169 medical students (48.5% males), their age was 22.90±1.27 years, 42% were breakfast-skippers, while 49.7% were late dinner consumers. No correlation was found between the previous cumulative grades (GPA), BMI, chronotype, and time lag in wakeup and bedtime between weekdays and weekends (p>0.005). No significant statistical differences between breakfast-skippers and late dinner consumers and their counterparts regarding GPA and chronotype.
Breakfast skipping and late dinner consumption were prevalent among medical students in Tabuk, Saudi Arabia, future large sample case-control studies to assess the impact of meal timing, and chronotype on academic performance are highly recommended.
人们对用餐时间和昼夜节律类型的认识日益提高。本研究旨在评估沙特医科学生中不吃早餐、晚餐进食较晚以及昼夜节律类型的情况。
2017年1月至5月期间，对169名临床阶段的医科学生进行了一项横断面研究。使用一份自填式问卷来报告早餐和晚餐的频率及时间。此外，还报告了之前的累积平均绩点、工作日和周末的就寝时间、起床时间以及睡眠时间。根据周末的入睡和起床时间以及睡眠深度计算昼夜节律类型。测量学生的体重和身高以评估体重指数（BMI）。参与者在填写问卷前还完成了一份记录两周睡眠习惯的日记。采用卡方检验和皮尔逊相关性分析进行统计分析。
在169名医科学生中（48.5%为男性），他们的年龄为22.90±1.27岁，42%的学生不吃早餐，而49.7%的学生晚餐进食较晚。未发现之前的累积成绩（GPA）、BMI、昼夜节律类型以及工作日和周末起床与就寝时间的时间差之间存在相关性（p>0.005）。在不吃早餐和晚餐进食较晚的学生与正常进食的学生之间，在GPA和昼夜节律类型方面没有显著的统计学差异。
在沙特阿拉伯塔布克的医科学生中，不吃早餐和晚餐进食较晚的情况很普遍，强烈建议未来进行大规模样本的病例对照研究，以评估用餐时间和昼夜节律类型对学业成绩的影响。
