新冠疫情之前及期间美国青少年的身体活动和久坐时间：一项大型队列研究的结果
Physical Activity and Sedentary Time Among U.S. Adolescents Before and During COVID-19: Findings From a Large Cohort Study.
作者信息
Hunt Ethan T, Brazendale Keith, De Moraes Augusto C F, Malkani Raja, Heredia Natalia I, Pfledderer Christopher D, Brown Denver M, Hoelscher Deanna M, Beets Michael W, Weaver Robert G
机构信息
Michael and Susan Dell Center for Healthy Living, University of Texas Health Science Center at Houston (UTHealth) School of Public Health, Austin, Texas.
Department of Health Promotion and Behavioral Science, University of Texas Health Science Center at Houston (UTHealth) School of Public Health, Austin, Texas.
出版信息
AJPM Focus. 2024 Jun 17;3(5):100253. doi: 10.1016/j.focus.2024.100253. eCollection 2024 Oct.
INTRODUCTION
Evidence suggests that adolescents engage in less physical activity during the summer break. Less is known regarding physical activity during the summer months of the COVID-19 pandemic.
METHODS
Utilizing data from the Adolescent Brain Cognitive Development study, the authors examined daily activity measured by Fitbit Charge 2 devices before and after the onset of the COVID-19 pandemic during school and summer months. Linear models estimated activity during pre-COVID-19 school, pre-COVID-19 summer, COVID-19 school, and COVID-19 summer.
RESULTS
Participants (N=7,179, aged 11.96 years, 51% female, 51% White) accumulated 8,671.0 (95% CI=8,544.7; 8,797.3) steps, 32.5 (95% CI=30.8, 32.3) minutes of moderate-to-vigorous physical activity, and 507.2 (95% CI=504.2, 510.2) minutes of sedentary time. During COVID-19 school, adolescents accumulated fewer daily steps and minutes of moderate-to-vigorous physical activity (-1,782.3 steps [95% CI= -2,052.7; -1,511.8] and -6.2 minutes [95% CI= -8.4, -4.0], respectively). Adolescents accumulated more minutes of daily sedentary time (29.6 minutes [95% CI=18.9, 40.3]) during COVID-19 school months than during the pre-COVID-19 school months. During pre-COVID-19 summer months, adolescents accumulated 1,255.1 (95% CI=745.3; 1,765.0) more daily steps than during COVID-19 months. Boys accumulated more daily steps and moderate-to-vigorous physical activity (2,011.5 steps [95% CI=1,271.9; 2,751.0] and 7.9 minutes [95% CI=1.4, 14.4], respectively) during the summer before COVID-19 than in summer during COVID-19. Both girls and boys accumulated more minutes of sedentary time during COVID-19 school months (47.4 [95% CI=27.5, 67.3] and 51.2 [95% CI=22.8, 79.7], respectively) than during COVID-19 summer months.
CONCLUSIONS
Societal restrictions during COVID-19 negatively impacted activity levels in the U.S., particularly during the summer months during COVID-19.
引言
有证据表明，青少年在暑假期间的体育活动较少。关于2019冠状病毒病大流行夏季月份的体育活动情况，我们了解得较少。
方法
作者利用青少年大脑认知发展研究的数据，研究了2019冠状病毒病大流行开始之前和之后的上学期间以及夏季，通过Fitbit Charge 2设备测量的日常活动。线性模型估计了2019冠状病毒病大流行之前的上学期间、2019冠状病毒病大流行之前的夏季、2019冠状病毒病大流行期间的上学期间以及2019冠状病毒病大流行期间的夏季的活动情况。
结果
参与者（N = 7179，年龄11.96岁，51%为女性，51%为白人）每天累计步数为8671.0步（95%置信区间=8544.7；8797.3），中度至剧烈体育活动时间为32.5分钟（95%置信区间=30.8，32.3），久坐时间为507.2分钟（95%置信区间=504.2，510.2）。在2019冠状病毒病大流行期间的上学期间，青少年每天累计步数和中度至剧烈体育活动时间减少（分别减少1782.3步[95%置信区间=-2052.7；-1511.8]和6.2分钟[95%置信区间=-8.4，-4.0]）。在2019冠状病毒病大流行期间的上学月份，青少年每天的久坐时间比2019冠状病毒病大流行之前的上学月份增加了29.6分钟（95%置信区间=18.9，40.3）。在2019冠状病毒病大流行之前的夏季月份，青少年每天的步数比2019冠状病毒病大流行期间多1255.1步（95%置信区间=745.3；1765.0）。在2019冠状病毒病大流行之前的夏季，男孩每天的步数和中度至剧烈体育活动时间比2019冠状病毒病大流行期间的夏季更多（分别多2011.5步[95%置信区间=1271.9；2751.0]和7.9分钟[95%置信区间=1.4，14.4]）。在2019冠状病毒病大流行期间的上学月份，女孩和男孩的久坐时间都比2019冠状病毒病大流行期间的夏季月份更多（分别为47.4分钟[95%置信区间=27.5，67.3]和51.2分钟[95%置信区间=22.8，79.7]）。
结论
2019冠状病毒病期间的社会限制对美国的活动水平产生了负面影响，尤其是在2019冠状病毒病期间的夏季月份。
Zotero 插件