Benedict Christian, Brandão Luiz Eduardo Mateus, Merikanto Ilona, Partinen Markku, Bjorvatn Bjørn, Cedernaes Jonathan
Department of Neuroscience, Sleep Science (BMC), Uppsala University, 752 36 Uppsala, Sweden.
Department of Medical Sciences, Uppsala University, 752 36 Uppsala, Sweden.
Clocks Sleep. 2021 Apr 22;3(2):251-258. doi: 10.3390/clockssleep3020015.
The COVID-19 pandemic and related restrictions, such as stay-at-home-orders, have significantly altered daily routines and lifestyles. Given their importance for metabolic health, we herein compared sleep and meal timing parameters during vs. before the COVID-19 pandemic based on subjective recall, in an anonymous Swedish survey. Among 191 adults (mean age: 47 years; 77.5% females), we show that social jetlag, i.e., the mismatch in sleep midpoint between work and free days, was reduced by about 17 min during the pandemic compared with the pre-pandemic state ( < 0.001). Concomitantly, respondents' sleep midpoint was shifted toward morning hours during workdays ( < 0.001). A later daily eating midpoint accompanied the shift in sleep timing ( = 0.001). This effect was mainly driven by a later scheduled first meal ( < 0.001). No difference in the timing of the day's last meal was found ( = 0.814). Although our survey was limited in terms of sample size and by being cross-sectional, our results suggest that the delay in sleep timing due to the COVID-19 pandemic was accompanied by a corresponding shift in the timing of early but not late meals.
新冠疫情及相关限制措施，如居家令，已显著改变了日常生活规律和生活方式。鉴于睡眠和用餐时间安排对代谢健康的重要性，我们在一项瑞典匿名调查中，基于主观回忆，比较了新冠疫情期间与疫情之前的睡眠和用餐时间参数。在191名成年人（平均年龄：47岁；77.5%为女性）中，我们发现，与疫情前相比，疫情期间社会时差（即工作日与休息日睡眠中点的差异）减少了约17分钟（P<0.001）。与此同时，受访者在工作日的睡眠中点向早晨时段偏移（P<0.001）。每日用餐中点随睡眠时间的变化而延迟（P=0.001）。这种影响主要是由第一餐时间延迟所致（P<0.001）。未发现一天中最后一餐时间的差异（P=0.814）。尽管我们的调查在样本量和横断面性质方面存在局限性，但我们的结果表明，新冠疫情导致的睡眠时间延迟伴随着早餐饮用时间的相应变化，而非晚餐饮用时间。
