■证据表明,青少年在暑假期间进行较少体力活动。关于COVID-19大流行夏季几个月的体育锻炼知之甚少。
■利用青少年大脑认知发育研究的数据,作者检查了在学校和夏季期间,在COVID-19大流行发生之前和之后,FitbitCharge2设备测量的日常活动。线性模型估计了COVID-19之前学校的活动,前COVID-19夏季,COVID-19学校,和COVID-19夏天。
■参与者(N=7,179,年龄11.96岁,51%女性,51%白色)累积8,671.0(95%CI=8,544.7;8,797.3)步骤,32.5(95%CI=30.8,32.3)分钟的中度至剧烈体力活动,和507.2(95%CI=504.2,510.2)分钟的久坐时间。在COVID-19学校期间,青少年每天累积的步数和中等至剧烈体力活动的分钟数(-1,782.3步[95%CI=-2,052.7;-1,511.8]和-6.2分钟[95%CI=-8.4,-4.0],分别)。青少年在COVID-19上学期间累积的每日久坐时间(29.6分钟[95%CI=18.9,40.3])比在COVID-19上学之前的几个月更多。在COVID-19之前的夏季,青少年每天累积的步数比COVID-19个月多1,255.1(95%CI=745.3;1,765.0)。男孩每天积累更多的步数和中等至剧烈的体育锻炼(2,011.5步数[95%CI=1,271.9;2,751.0]和7.9分钟[95%CI=1.4,14.4],分别)在COVID-19之前的夏季比在COVID-19期间的夏季。在COVID-19上学期间,男孩和女孩都累积了更多的久坐时间(47.4[95%CI=27.5,67.3]和51.2[95%CI=22.8,79.7],分别)比COVID-19夏季月份更多。
■COVID-19期间的社会限制对美国的活动水平产生了负面影响,特别是在COVID-19的夏季。
UNASSIGNED: 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.
UNASSIGNED: 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.
UNASSIGNED: 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.
UNASSIGNED: Societal restrictions during COVID-19 negatively impacted activity levels in the U.S., particularly during the summer months during COVID-19.