How COVID-19 lockdown and reopening affected daily steps: evidence based on 164,630 person-days of prospectively collected data from Shanghai, China.
How COVID-19 lockdown and reopening affected daily steps: evidence based on 164,630 person-days of prospectively collected data from Shanghai, China.
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DOI：
10.1186/s12966-021-01106-x
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发表时间：
2021-03-17
期刊：
影响因子：
--
通讯作者：
Shi Y
中科院分区：
文献类型：
--
作者：
Ding D;Cheng M;Del Pozo Cruz B;Lin T;Sun S;Zhang L;Yang Q;Ma Z;Wang J;Jia Y;Shi Y
COVID-19封城可能导致缺乏身体活动，这是非传染性疾病的主要风险因素。本研究旨在确定：1）中国封锁前、封锁期间及封锁后每日步数的轨迹，及2）与轨迹相关的特征。从2019年12月至2020年7月，我们在三个阶段（封锁前、封锁期间和封锁后）连续收集了815名居住在上海的中国成年人超过202天的基于智能手机的步数。报告了参与者的特征，并在锁定前测量了身高、体重和身体成分。使用具有群集稳健标准误差的“尖锐”回归不连续性设计来测试封锁和重新开放对每日步骤的影响，并使用线性混合模型来检查与观察期间的轨迹相关的特征。根据164，630人/日的数据，我们发现每日步数在封锁后（2020年1月24日）急剧下降，平均下降3796步（SE = 88），随后出现显著趋势，每天增加34步（SE = 2.5; p < .001），直至封锁结束（2020年3月22日）。这种增加趋势以每天5步的较慢速度持续到重新开放阶段（SE = 2.3; p = 0.029）。那些年龄较大，已婚，受过大学教育，活动不足的人，身体成分“处于危险之中”，而对照组的人，在封锁期间恢复步数较慢，而那些年龄较大，已婚，没有大学教育，身体成分“处于危险之中”的人在重新开放后恢复步数较慢。尽管后来步数增加，但COVID-19封锁导致体力活动持续减少，可能对健康产生不利影响。世界各地的政府和卫生专业人员应继续鼓励和促进大流行期间的体育活动。在线版本包含补充材料，可通过10.1186/s12966-021-01106-x获得。
COVID-19 lockdowns may lead to physical inactivity, a major risk factor for non-communicable diseases. This study aims to determine: 1) the trajectory in daily step counts before, during and after the lockdown in China, and 2) the characteristics associated with the trajectories. From December 2019 to July 2020, smartphone-based step counts were continuously collected in 815 Chinese adults residing in Shanghai over 202 days across three phases: before, during, and after the lockdown. Participant characteristics were reported, and height, weight and body composition measured before the lockdown. A ‘sharp’ regression discontinuity design with cluster robust standard errors was used to test the effect of the lockdown and reopening on daily steps and a linear mixed model was used to examine the characteristics associated with trajectories during the observed period. Based on 164,630 person-days of data, we found a sharp decline in daily step counts upon the lockdown (24/01/2020) by an average of 3796 (SE = 88) steps, followed by a significant trend of increase by 34 steps/day (SE = 2.5; p < .001) until the end of the lockdown (22/03/2020). This increasing trend continued into the reopening phase at a slower rate of 5 steps per day (SE = 2.3; p = 0.029). Those who were older, married, university educated, insufficiently active, had an ‘at risk’ body composition, and those in the control group, were slower at recovering step counts during the lockdown, and those who were older, married, without university education and with an ‘at risk’ body composition recovered step counts at a slower pace after the reopening. Despite later increases in step counts, COVID-19 lockdown led to a sustained period of reduced physical activity, which may have adverse health implications. Governments and health professionals around the world should continue to encourage and facilitate physical activity during the pandemic. The online version contains supplementary material available at 10.1186/s12966-021-01106-x.
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作者：
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