Physical Activity and Sedentary Time Among U.S. Adolescents Before and During COVID-19: Findings From a Large Cohort Study

AJPM focus Pub Date : 2024-06-17 DOI:10.1016/j.focus.2024.100253

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Abstract

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.

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美国青少年在 COVID-19 之前和期间的体育活动和久坐时间：一项大型队列研究的结果

引言有证据表明，青少年在暑假期间的体育活动较少。方法作者利用青少年大脑认知发展研究的数据，研究了 COVID-19 流行病爆发前后学校和暑假期间 Fitbit Charge 2 设备测量的每日活动量。线性模型估算了 COVID-19 流行前的学校、COVID-19 流行前的夏季、COVID-19 流行前的学校和 COVID-19 流行前的夏季的活动量。0 (95% CI=8,544.7; 8,797.3)步，32.5 (95% CI=30.8, 32.3)分钟的中度到剧烈运动，507.2 (95% CI=504.2, 510.2)分钟的久坐时间。在 COVID-19 学校期间，青少年每天积累的中强度体力活动步数和分钟数较少（分别为-1,782.3 步 [95% CI= -2,052.7; -1,511.8] 和-6.2 分钟 [95% CI= -8.4, -4.0]）。与 COVID-19 前的学月相比，COVID-19 学年的青少年每天累积的久坐时间更长（29.6 分钟 [95% CI=18.9, 40.3]）。在 COVID-19 前的夏季，青少年的日积步数比 COVID-19 期间多 1,255.1 (95% CI=745.3; 1,765.0)。与 COVID-19 期间的夏季相比，男孩在 COVID-19 之前的夏季积累了更多的每日步数和中强度体力活动（分别为 2,011.5 步 [95% CI=1,271.9; 2,751.0] 和 7.9 分钟 [95% CI=1.4, 14.4]）。结论 COVID-19 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 COVID-19 期间的夏季。

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来源期刊

AJPM focus Health, Public Health and Health Policy

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0.50

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