Derose Kathryn Pitkin, Marsh Terry, Mariscal Mark, Pina-Cortez Sophia, Cohen Deborah A
RAND Corporation, 1776 Main St, P.O. Box 2138, Santa Monica, CA 90407-2138, USA.
Los Angeles Department of Recreation and Parks, 1670 Palos Verdes Drive North, Harbor City, CA 90710, USA.
Prev Med. 2014 Jul;64:14-9. doi: 10.1016/j.ypmed.2014.03.019. Epub 2014 Mar 25.
The aim of this study is to describe implementation of a randomized controlled trial of community-based participatory research (CBPR) approaches to increase park use and physical activity across 33 diverse neighborhoods in Los Angeles.
Fifty parks were randomly assigned based on park size, facilities and programs, and neighborhood socio-demographic characteristics to: park director (PD, 17 parks); PD and park advisory board of interested community members (PD+PAB, 16 parks); and no-intervention control (17 parks) arms. Between 2007 and 2012, PDs and PABs from the 33 intervention parks participated in community engagement, baseline assessment, marketing training, intervention design and implementation, and follow-up assessment.
Intervention parks (PD and PD+PAB) invested in new and diversified signage, promotional items, outreach or support for group activities like fitness classes and walking clubs, and various marketing strategies. Scaling up CBPR methods across parks in 33 diverse neighborhoods was challenging. Working with departmental management and established structures for community input (PABs) and park policy (PDs) facilitated implementation and sustainability.
Scaling up CBPR methods across diverse communities involved tradeoffs. CBPR is useful for tailoring research and enhancing community impact and sustainability, but more work is needed to understand how to conduct multi-site trials across diverse settings using CBPR.
本研究旨在描述一项随机对照试验的实施情况，该试验采用基于社区的参与式研究（CBPR）方法，以增加洛杉矶33个不同社区的公园使用率和身体活动水平。
根据公园规模、设施和项目以及社区社会人口特征，将50个公园随机分为：公园主管组（PD，17个公园）；公园主管和由感兴趣的社区成员组成的公园咨询委员会组（PD+PAB，16个公园）；以及无干预对照组（17个公园）。在2007年至2012年期间，来自33个干预公园的公园主管和公园咨询委员会参与了社区参与、基线评估、营销培训、干预设计与实施以及随访评估。
干预公园（PD组和PD+PAB组）投资于新的和多样化的标识、宣传物品、对健身课程和步行俱乐部等团体活动的外展或支持，以及各种营销策略。在33个不同社区的公园中扩大CBPR方法具有挑战性。与部门管理以及已建立的社区意见反馈机制（公园咨询委员会）和公园政策机制（公园主管）合作有助于实施和可持续性发展。
在不同社区扩大CBPR方法需要进行权衡。CBPR对于调整研究以及增强社区影响和可持续性很有用，但还需要更多工作来了解如何使用CBPR在不同环境中进行多地点试验。
