Centre for Sleep and Cognition, Human Potential Program, Yong Loo Lin School of Medicine, National University of Singapore, 12 Science Drive 2, Singapore, 117549, Singapore.
Oura Health, Oulu, Finland.
Sci Rep. 2021 Jul 13;11(1):14413. doi: 10.1038/s41598-021-93924-z.
Lockdowns imposed to stem the spread of COVID-19 massively disrupted the daily routines of many worldwide, but studies to date have been mostly confined to observations within a limited number of countries, based on subjective reports and surveys from specific time periods during the pandemic. We investigated associations between lockdown stringency and objective sleep and resting-heart rate measures in ~ 113,000 users of a consumer sleep tracker across 20 countries from Jan to Jul 2020, compared to an equivalent period in 2019. With stricter lockdown measures, midsleep times were universally delayed, particularly on weekdays, while midsleep variability and resting heart rate declined. These shifts (midsleep: + 0.09 to + 0.58 h; midsleep variability: - 0.12 to - 0.26 h; resting heart rate: - 0.35 to - 2.08 bpm) correlated with the severity of lockdown across different countries (all Ps < 0.001) and highlight the graded influence of stringency lockdowns on human physiology.
为了遏制 COVID-19 的传播而实施的封锁措施极大地打乱了全球许多人的日常生活，但迄今为止的研究主要局限于少数几个国家的观察，这些研究基于大流行期间特定时间段内来自特定国家的主观报告和调查。我们调查了 2020 年 1 月至 7 月期间，在 20 个国家约 11.3 万名消费者睡眠追踪器用户的睡眠和静息心率与封锁严格程度之间的关联，与 2019 年同期进行了比较。随着封锁措施的严格化，晚睡时间普遍推迟，尤其是在工作日，而晚睡的变化幅度和静息心率下降。这些变化（晚睡时间：+0.09 到+0.58 小时；晚睡变化幅度：-0.12 到-0.26 小时；静息心率：-0.35 到-2.08 次/分钟）与不同国家封锁措施的严重程度相关（所有 P 值均<0.001），突出了严格封锁对人体生理学的渐进影响。
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