Optimizing an mHealth Intervention to Change Food Purchasing Behaviors for Cancer Prevention: Protocol for a Pilot Randomized Controlled Trial.
Optimizing an mHealth Intervention to Change Food Purchasing Behaviors for Cancer Prevention: Protocol for a Pilot Randomized Controlled Trial.
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DOI：
10.2196/39669
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发表时间：
2022-06-24
影响因子：
1.7
通讯作者：
Butryn, Meghan L.
中科院分区：
文献类型：
--
作者：
Horgan, Olivia Z.;Crane, Nicole T.;Forman, Evan M.;Milliron, Brandy-Joe;Simone, Nicole L.;Zhang, Fengqing;Butryn, Meghan L.
饮食摄入量是影响癌症风险的一个强大的可变因素;然而，大多数美国成年人并不遵守预防癌症的饮食指南。改善饮食依从性的一个有希望的途径是针对杂货店购物习惯。干预措施可以促进健康的杂货选择，结合移动健康和传统方法，通过促进购物时饮食目标的突出性，增强改变饮食的动力，并增加家庭对健康食品购买的支持。这项试点研究将评估旨在提高癌症预防饮食指南依从性的干预成分的可行性和可接受性（初步目标）。该研究的主要目的是量化每个干预成分单独和组合对饮食摄入（主要目的）和杂货店食品购买（探索性目的）的影响。将进行中介分析，以了解行动机制（目标的显着性，动机和家庭支持-次要目标）。总体目标是优化移动健康干预措施，以便在未来的全面临床试验中进行测试。该研究招募了对癌症预防饮食建议依从性低的成年人（N=62）。在为期20周的计划中，所有参与者参加营养教育研讨会，并通过应用程序每周接收教育信息。析因设计用于测试4个干预组件：（1）位置触发的信息：到达杂货店时提供教育信息;（2）对改变的好处的思考：在信息中增加内容，鼓励对健康饮食的预期益处进行反思，参与者参加额外的研讨会和3次关于此主题的教练电话;（3）教练监测：食品购买由教练进行数字监控，教练每周发送个性化的应用程序消息，并进行3次辅导电话，重点关注有关购买的反馈;以及（4）家庭支持：家庭中的另一个成年人接收旨在获得对健康食品购买的支持的消息，并通过3次指导电话和一次由指数参与者和家庭成员参加的额外研讨会来提供支持。评估在第0周、第10周和第20周完成，使用自我报告措施，以及使用商店忠诚度账户从购买点客观捕获杂货店数据。美国国家癌症研究所于2020年7月7日资助了这项研究（R21 CA 252933）。参与者招募于2021年春季开始，最终成功招募62名参与者。数据收集预计将于2022年夏季完成，结果预计将于2023年夏季发布。这项研究的结果将为通过改变饮食摄入量来降低癌症风险的可扩展干预措施的发展提供信息。ClinicalTrials.gov NCT 04947150; https://clinicaltrials.gov/ct2/show/NCT04947150 DERR 1 -10.2196/39669
Dietary intake is a powerful modifiable factor that influences cancer risk; however, most US adults do not adhere to dietary guidelines for cancer prevention. One promising pathway for improving dietary adherence is targeting grocery shopping habits. Interventions might facilitate healthy grocery choices, with a combination of mHealth and traditional methods, by promoting the salience of dietary goals while shopping, enhancing motivation to make dietary changes, and increasing household support for healthy food purchasing. This pilot study will assess feasibility and acceptability of intervention components designed to improve adherence to dietary guidelines for cancer prevention (preliminary aim). The primary aim of the study is to quantify the effect of each intervention component, individually and in combination, on dietary intake (primary aim) and grocery store food purchases (exploratory aim). Mediation analyses will be conducted to understand the mechanisms of action (goal salience, motivation, and household support—secondary aims). The overarching goal is to optimize an mHealth intervention to be tested in a future fully powered clinical trial. The study enrolled adults (N=62) with low adherence to dietary recommendations for cancer prevention. In a 20-week program, all participants attend a nutrition education workshop and receive weekly educational messages through an app. A factorial design is used to test 4 intervention components: (1) location-triggered messages: educational messages are delivered when arriving at grocery stores; (2) reflections on the benefits of change: content is added to messages to encourage reflection on anticipated benefits of healthy eating, and participants attend an additional workshop session and 3 coach calls on this topic; (3) coach monitoring: food purchases are monitored digitally by a coach who sends personalized weekly app messages and conducts 3 coaching calls that focus on feedback about purchases; and (4) household support: another adult in the household receives messages designed to elicit support for healthy food purchasing, and support is addressed in 3 coach calls and an extra workshop session attended by the index participant and household member. Assessments are completed at weeks 0, 10, and 20 using self-report measures, as well as objective capture of grocery data from the point of purchase using store loyalty accounts. The National Cancer Institute funded this study (R21CA252933) on July 7, 2020. Participant recruitment began in the spring of 2021 and concluded with the successful enrollment of 62 participants. Data collection is expected to be completed in the summer of 2022, and results are expected to be disseminated in the summer of 2023. The results of this study will inform the development of scalable interventions to lower cancer risk via changes in dietary intake. ClinicalTrials.gov NCT04947150; https://clinicaltrials.gov/ct2/show/NCT04947150 DERR1-10.2196/39669
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