Dun Yaoshan, Ripley-Gonzalez Jeffrey W, Zhou Nanjiang, You Baiyang, Li Qiuxia, Li Hui, Zhang Wenliang, Thomas Randal J, Olson Thomas P, Liu Jie, Dong Yuchen, Liu Suixin
Division of Cardiac Rehabilitation, Department of Physical Medicine and Rehabilitation, Xiangya Hospital of Central South University, Changsha, Hunan, China.
National Clinical Research Center for Geriatric Disorders, Xiangya Hospital of Central South University, Changsha, Hunan, China.
BMJ Open. 2021 Jul 22;11(7):e052451. doi: 10.1136/bmjopen-2021-052451.
To observe the weight change in Chinese youth during a 4-month COVID-19 lockdown, and the association between weight change and mental health, physical activity and sedentary time changes, and dietary habits.
A retrospective observational study.
Two universities located in Zhejiang and Hunan provinces, China.
This study enrolled 12 889 college students whose body weight was measured before the lockdown (1 December 2019-20 January 2020) at the two universities, and reported their weight measured at home or community after the end of the lockdown (1-23 May 2020) via an online follow-up questionnaire.
The primary outcome was the weight change in Chinese youth during a 4-month lockdown resulting from the COVID-19 pandemic. The secondary outcomes were the relationships of weight change to COVID-19-related stress, depression, anxiety, physical activity and sedentary time changes, and dietary habits.
Participants' ages ranged from 17 to 27 years (=19, SD=1) with 80.2% identified as female. The average absolute and relative changes in body weight were 2.6 (95% CI 2.0 to 3.2)) kg and 4.2% (95% CI 4.0% to 4.3%) for men, and 2.1 (1.9 to 2.4) kg and 4.2% (95% CI 3.9% to 4.4%) for women. An increase in overweight and obese individuals according to Asian cut-off points as a demographic percentage by 4.5% and 2.7% and 4.8% and 3.4% in men and women, respectively (<0.001), was observed. Weight gain was significantly associated with increased sedentary time and an increase in COVID-19-related stress and depression score.
The present study's results suggest that the risk of weight gain in Chinese youth during the lockdown increased and that strategies to decrease sedentary time and improve mental health may be warranted to mitigate weight gain during and after the COVID-19 pandemic.
观察中国青年在新冠疫情封锁4个月期间的体重变化，以及体重变化与心理健康、身体活动和久坐时间变化及饮食习惯之间的关联。
一项回顾性观察研究。
中国浙江省和湖南省的两所大学。
本研究招募了12889名大学生，他们在封锁前（2019年12月1日至2020年1月20日）于这两所大学测量了体重，并通过在线随访问卷报告了封锁结束后（2020年5月1日至23日）在家中或社区测量的体重。
主要观察指标是新冠疫情导致的4个月封锁期间中国青年的体重变化。次要观察指标是体重变化与新冠相关压力、抑郁、焦虑、身体活动和久坐时间变化及饮食习惯之间的关系。
参与者年龄在17至27岁之间（=19，标准差=1），80.2%为女性。男性体重的平均绝对变化和相对变化分别为2.6（95%置信区间2.0至3.2）千克和4.2%（95%置信区间4.0%至4.3%），女性分别为2.1（1.9至2.4）千克和4.2%（95%置信区间3.9%至4.4%）。观察到按照亚洲切点划分的超重和肥胖个体作为人口统计学百分比在男性和女性中分别增加了4.5%和2.7%以及4.8%和3.4%（<0.001）。体重增加与久坐时间增加以及新冠相关压力和抑郁评分增加显著相关。
本研究结果表明，封锁期间中国青年体重增加的风险增加，在新冠疫情期间及之后，可能需要采取减少久坐时间和改善心理健康的策略来减轻体重增加。
