Ranjit Nalini, Nielsen Aida, Akhavan Nika, Denis Laurence, Janda Kathryn, Jovanovic Christine, Basu Semonti, Hussaini Aliya, van den Berg Alexandra
University of Texas School of Public Health in Austin, Austin, TX, USA.
Michael & Susan Dell Foundation, Austin, TX, USA.
Health Promot Pract. 2022 Jan;23(1):185-194. doi: 10.1177/1524839920961365. Epub 2020 Oct 9.
To describe outcomes of a 4-year physical activity (PA) and nutrition intervention (2013-2017) in Dove Springs, a low-income urban community in Texas.
Go! Austin/Vamos! Austin is a place-based intervention targeting the built and social environments of PA and nutrition. Baseline and follow-up measures related to PA and nutrition were obtained from 357 parent-child dyads (final = 236) in the intervention community and a control community. A three-level dose of exposure measure was created to indicate the amount of exposure to intervention activities across the 4 years. Pre-post changes in key outcomes by level of exposure and contrasts across "high exposure" and "no exposure" categories were obtained using repeated-measures regression, adjusting for important confounders.
"High exposure" adult participants showed consistently more favorable changes than "no exposure" participants across a variety of indicators, including positive perceptions and utilization of community PA resources, amount of moderate PA, utilization of retail outlets offering fresh produce, and measures of healthy eating. Few improvements were seen in child-level outcomes.
Community interventions can successfully improve health-promoting behaviors provided they ensure sufficient dose of exposure.
描述在德克萨斯州一个低收入城市社区多弗斯普林斯开展的为期4年的体育活动（PA）和营养干预（2013 - 2017年）的结果。
“去！奥斯汀/加油！奥斯汀”是一项基于场所的干预措施，针对体育活动和营养的建筑环境与社会环境。从干预社区和一个对照社区的357对亲子二元组（最终为236对）中获取了与体育活动和营养相关的基线及随访测量数据。创建了一个三级暴露剂量测量指标，以表明在这4年中对干预活动的暴露程度。使用重复测量回归分析，在调整重要混杂因素后，得出按暴露水平划分的关键结局的前后变化以及“高暴露”和“无暴露”类别之间的对比情况。
在包括对社区体育活动资源的积极认知和利用、中等强度体育活动量、提供新鲜农产品的零售店的利用情况以及健康饮食指标等各种指标方面，“高暴露”的成年参与者始终比“无暴露”的参与者表现出更有利的变化。儿童层面的结局几乎没有改善。
社区干预措施只要确保有足够的暴露剂量，就能成功改善促进健康的行为。
