Sydney Medical School, University of Sydney, Sydney 2006, Australia.
Sleep Research Group, Charles Perkins Centre, University of Sydney, Sydney 2006, Australia.
Int J Environ Res Public Health. 2020 Apr 14;17(8):2677. doi: 10.3390/ijerph17082677.
Avoiding food before bedtime is a widely accepted sleep hygiene practice, yet few studies have assessed meal timing as a risk factor for disrupted sleep. This study examined the relationship between evening meal timing and sleep quality in young adults. A total of = 793 participants (26% male) aged between 18 and 29 years responded to an online survey, which captured sociodemographic information, lifestyle variables, and sleep characteristics. Meal timing was defined as meals more than 3 h before or within 3 h of bedtime. The outcomes were as follows: one or more nocturnal awakenings, sleep onset latency of >30 min, and sleep duration of ≤6 h. Logistic regression analyses showed that eating within 3 h of bedtime was positively associated with nocturnal awakening (OR = 1.61, 95% CI = 1.15-2.27) but not long sleep onset latency (1.24; 0.89-1.73) or short sleep duration (0.79; 0.49-1.26). The relationship remained significant after adjusting for potential confounders of ethnicity and body mass index (OR = 1.43, 95% CI = 1.00-2.04). Meal timing appears to be a modifiable risk factor for nocturnal awakenings and disrupted sleep. However, this is a preliminary cross-sectional study and highlights the need for additional research on the influence of the timing of food intake on sleep.
睡前避免进食是一种广泛接受的睡眠卫生习惯，但很少有研究评估用餐时间作为睡眠障碍的危险因素。本研究调查了年轻人晚餐时间与睡眠质量之间的关系。共有 793 名（26%为男性）年龄在 18 至 29 岁的参与者通过在线调查回答了问题，该调查捕获了社会人口统计学信息、生活方式变量和睡眠特征。用餐时间定义为睡前 3 小时以上或 3 小时内的用餐。结果如下：夜间觉醒 1 次或更多次、入睡潜伏期>30 分钟和睡眠持续时间≤6 小时。逻辑回归分析表明，睡前 3 小时内进食与夜间觉醒（OR=1.61，95%CI=1.15-2.27）呈正相关，但与长入睡潜伏期（1.24；0.89-1.73）或短睡眠时间（0.79；0.49-1.26）无关。在调整了种族和体重指数的潜在混杂因素后，这种关系仍然显著（OR=1.43，95%CI=1.00-2.04）。用餐时间似乎是夜间觉醒和睡眠障碍的一个可改变的危险因素。然而，这是一项初步的横断面研究，强调了需要进一步研究食物摄入时间对睡眠的影响。
