This study aimed to evaluate the relationship between sleep quality and tryptophan consumption in King Saud University students by using a PSQ1 questionnaire. This study was conducted during the COVID-19 pandemic, and it included 122 Saudi students, who received the PSQ1 questionnaire via Twitter, Telegram, and WhatsApp. All data was encoded in Excel for statistical analysis. Generally, low consumption levels were noted for tryptophan, coffee/tea, and soft and energy drinks in 42.6%, 47.5%, and 76.2% of the participants, respectively, whereas dairy consumption was high in 32% of the participants. Moderate consumption of caffeinated drinks was noted in 50.8% of the participants. Meanwhile, moderate scores were noted for sleep quality, sleep duration, sleep delay, and fatigue during day time; high scores for inability to sleep within 20 mins after going to bed were noted in only 25.4% of the participants. When the obtained data was examined in three groups, gender (p=0.02), specialization (p=0.02), not falling asleep within 20 min (p=0.003), sleep delay (p=0.01), feeling cold during sleep (p=0.02), and having a good sleep in the previous month (p=0.04) were associated. By contrast, no association was observed between tryptophan consumption and sleep quality. Interventional studies involving a large sample size, gender bias, other age groups, and other ethnic populations should be carried out in the future.

本研究旨在通过使用 PSQ1 问卷来评估沙特国王大学学生的睡眠质量与色氨酸消耗之间的关系。这项研究是在 COVID-19 大流行期间进行的，包括 122 名沙特学生，他们通过 Twitter、Telegram 和 WhatsApp 收到了 PSQ1 调查问卷。所有数据均编码在 Excel 中进行统计分析。一般来说，色氨酸、咖啡/茶、软饮料和能量饮料的摄入量较低，分别有 42.6%、47.5% 和 76.2% 的参与者，而乳制品摄入量较高的参与者有 32%。50.8% 的参与者适度饮用含咖啡因饮料。与此同时，睡眠质量、睡眠持续时间、睡眠延迟和白天疲劳程度得分中等；只有 25.4% 的参与者在上床后 20 分钟内无法入睡，得分较高。将获得的数据分为三组进行检查，性别（p=0.02）、专业化（p=0.02）、20分钟内未入睡（p=0.003）、睡眠延迟（p=0.01）、睡眠时感到寒冷（p =0.02），与上个月睡眠良好（p=0.04）相关。相比之下，没有观察到色氨酸消耗量与睡眠质量之间存在关联。未来应开展大样本、性别偏见、其他年龄组、其他民族人群的干预研究。