School of Exercise and Nutritional Sciences, San Diego State University, 5500 Campanile Drive, San Diego, CA, 92182, USA.
Center for Child Health, Behavior, and Development, Seattle Children's Research Institute, 1920 Terry Avenue, Seattle, WA, 98101, USA.
Int J Behav Nutr Phys Act. 2024 May 10;21(1):55. doi: 10.1186/s12966-024-01602-w.
The purpose of this study was to investigate the effects of a walking school bus intervention on children's active commuting to school.
We conducted a randomized controlled trial (RCT) in Houston, Texas (Year 1) and Seattle, Washington (Years 2-4) from 2012 to 2016. The study had a two-arm, cluster randomized design comparing the intervention (walking school bus and education materials) to the control (education materials) over one school year October/November - May/June). Twenty-two schools that served lower income families participated. Outcomes included percentage of days students' active commuting to school (primary, measured via survey) and moderate-to-vigorous physical activity (MVPA, measured via accelerometry). Follow-up took place in May or June. We used linear mixed-effects models to estimate the association between the intervention and outcomes of interest.
Total sample was 418 students [M=9.2 (SD = 0.9) years; 46% female], 197 (47%) in the intervention group. The intervention group showed a significant increase compared with the control group over time in percentage of days active commuting (β = 9.04; 95% CI: 1.10, 16.98; p = 0.015) and MVPA minutes/day (β = 4.31; 95% CI: 0.70, 7.91; p = 0.02).
These findings support implementation of walking school bus programs that are inclusive of school-age children from lower income families to support active commuting to school and improve physical activity.
This RCT is registered at clinicaltrials.gov (NCT01626807).
本研究旨在探讨步行校车干预对儿童上下学积极出行的影响。
我们于 2012 年至 2016 年在德克萨斯州休斯顿（第 1 年）和华盛顿州西雅图（第 2-4 年）进行了一项随机对照试验（RCT）。该研究采用两臂、集群随机设计，将干预措施（步行校车和教育材料）与对照组（教育材料）进行比较，为期一学年（10 月/11 月至 5 月/6 月）。有 22 所服务于低收入家庭的学校参与了研究。结果包括学生上下学积极出行的天数百分比（主要通过调查测量）和中等到剧烈的身体活动（MVPA，通过加速度计测量）。随访于 5 月或 6 月进行。我们使用线性混合效应模型来估计干预措施与感兴趣的结果之间的关联。
总样本为 418 名学生[M=9.2（SD=0.9）岁；46%女性]，干预组 197 名（47%）。与对照组相比，干预组在积极出行的天数百分比（β=9.04；95%CI：1.10，16.98；p=0.015）和 MVPA 分钟/天（β=4.31；95%CI：0.70，7.91；p=0.02）方面随着时间的推移呈现出显著的增加。
这些发现支持实施包容性更强的步行校车项目，以支持来自低收入家庭的学龄儿童积极上下学出行，并提高身体活动水平。
这项 RCT 在美国临床试验注册中心（NCT01626807）注册。
