青少年早期 Fitbit 日常步数的社会流行病学研究。
Social epidemiology of Fitbit daily steps in early adolescence.
机构信息
Department of Pediatrics, University of California, San Francisco, CA, USA.
Factor-Inwentash Faculty of Social Work, University of Toronto, Toronto, ON, Canada.
出版信息
Pediatr Res. 2023 Nov;94(5):1838-1844. doi: 10.1038/s41390-023-02700-4. Epub 2023 Jun 23.
BACKGROUND
Sociodemographic disparities in adolescent physical activity have been documented but mostly rely on self-reported data. Our objective was to examine differences in device-based step metrics, including daily step count (steps d), by sociodemographic factors among a diverse sample of 10-to-14-year-old adolescents in the US.
METHODS
We analyzed prospective cohort data from Year 2 (2018-2020) of the Adolescent Brain Cognitive Development (ABCD) Study (N = 6460). Mixed-effects models were conducted to estimate associations of sociodemographic factors (sex, sexual orientation, race/ethnicity, household income, parental education, and parental marital status) with repeated measures of steps d over the course of 21 days.
RESULTS
Participants (49.6% female, 39.0% racial/ethnic minority) accumulated an average of 9095.8 steps d. In mixed-effects models, 1543.6 more steps d were recorded for male versus female sex, Black versus White race (328.8 more steps d), heterosexual versus sexual minority sexual orientation (676.4 more steps d), >$200,000 versus <$25,000 household income (1003.3 more steps d), and having married/partnered parents versus unmarried/unpartnered parents (326.3 more steps d). We found effect modification by household income for Black adolescents and by sex for Asian adolescents.
CONCLUSIONS
Given sociodemographic differences in adolescent steps d, physical activity guidelines should focus on key populations and adopt strategies optimized for adolescents from diverse backgrounds.
IMPACT
Sociodemographic disparities in physical activity have been documented but mostly rely on self-reported data, which can be limited by reporting and prevarication bias. In this demographically diverse sample of 10-14-year-old early adolescents in the U.S., we found notable and nuanced sociodemographic disparities in Fitbit steps per day. More daily steps were recorded for male versus female sex, Black versus White race, heterosexual versus sexual minority, >$100,000 versus <$25,000 household income, and having married/partnered versus unmarried/unpartnered parents. We found effect modification by household income for Black adolescents and by sex for Asian adolescents.
背景
已有研究记录了青少年身体活动方面的社会人口学差异，但这些研究主要依赖于自我报告数据。我们的目的是，在美国一个由 10 至 14 岁青少年组成的多样化样本中，使用基于设备的计步指标（包括每日步数 steps d），来检验社会人口学因素的差异。
方法
我们分析了青少年大脑认知发展研究（ABCD 研究）第 2 年（2018-2020 年）的前瞻性队列数据（N=6460）。采用混合效应模型，估计社会人口学因素（性别、性取向、种族/民族、家庭收入、父母教育程度和父母婚姻状况）与 21 天内重复测量的 steps d 之间的关联。
结果
参与者（49.6%为女性，39.0%为少数族裔）平均每天记录 9095.8 步。在混合效应模型中，男性比女性多记录 1543.6 步，黑人比白人多记录 328.8 步，异性恋比性少数群体多记录 676.4 步，家庭收入超过 20 万美元比低于 2.5 万美元多记录 1003.3 步，父母已婚/有伴侣比父母未婚/无伴侣多记录 326.3 步。我们发现，家庭收入对黑人青少年和性别对亚裔青少年的影响存在调节作用。
结论
鉴于青少年 steps d 方面的社会人口学差异，身体活动指南应针对重点人群，并为来自不同背景的青少年采用优化策略。
意义
已有研究记录了身体活动方面的社会人口学差异，但这些研究主要依赖于自我报告数据，而这些数据可能受到报告和歪曲偏差的限制。在这项研究中，我们在美国一个由 10 至 14 岁早期青少年组成的、具有代表性的样本中发现，在 Fitbit 每日计步方面存在显著而微妙的社会人口学差异。男性比女性、黑人比白人、异性恋比性少数群体、家庭收入超过 10 万美元比低于 2.5 万美元、父母已婚/有伴侣比未婚/无伴侣的青少年每天多记录 1543.6 步。我们发现，家庭收入对黑人青少年和性别对亚裔青少年的影响存在调节作用。
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