Prochnow Tyler, Dunton Genevieve F, de la Haye Kayla, Pollack Porter Keshia M, Lee Chanam
Department of Health Behavior, School of Public Health, Texas A&M University, College Station, TX, United States.
Department of Preventive Medicine, Keck School of Medicine, University of Southern California, Los Angeles, CA, United States.
JMIR Res Protoc. 2025 Feb 21;14:e68667. doi: 10.2196/68667.
Physical activity (PA) is crucial for youth health, but up to 74% of adolescents fail to meet recommended levels, especially during summer when structured supports associated with school are not available. The social and built environments significantly influence youth PA; yet, their complex interactions remain poorly understood. This study aims to evaluate the feasibility of combining ecological momentary assessment (EMA) and social network analysis to examine bidirectional influences among youth PA, built environments, and social networks during summer.
The objectives are to (1) evaluate the feasibility and acceptability of the combined EMA and Social Network Analysis protocol, and (2) identify phenotypes using person-level, microtemporal, and dynamic overlap between social and built environments.
This mixed methods feasibility study with an exploratory observational component will recruit 120 youth aged 12 years to 15 years from an urban school district in Central Texas, US. Participants will first complete a baseline survey to report their general social network patterns and environmental perceptions. Then participants will wear an ActiGraph LEAP accelerometer and respond to EMA prompts via smartphone for 7 days. EMA will assess real-time perceptions of social networks and surrounding built environments, which will be time-matched with accelerometer-assessed PA data. GPS coordinates will be collected with each EMA prompt to assess features of the built environment. Follow-up semistructured interviews will assess protocol acceptability.
This study has been funded by the National Heart, Lung, and Blood Institute. Data collection is expected in the summers of 2025, 2026, and 2027.
This innovative approach combines EMA, SNA, accelerometry, and GPS data to provide unprecedented insights into the dynamic interplay between social networks, built environments, and youth PA during summer. Findings will inform the development of more targeted, effective interventions to promote PA among youth. While limitations include potential participant burden and generalizability, the study's strengths in capturing real-time, contextualized data make it a valuable contribution to understanding youth PA determinants.
INTERNATIONAL REGISTERED REPORT IDENTIFIER (IRRID): PRR1-10.2196/68667.
身体活动对青少年健康至关重要，但高达74%的青少年未达到推荐水平，尤其是在夏季，此时缺乏与学校相关的结构化支持。社会和建筑环境对青少年的身体活动有显著影响；然而，它们之间复杂的相互作用仍知之甚少。本研究旨在评估结合生态瞬时评估（EMA）和社会网络分析来研究夏季青少年身体活动、建筑环境和社会网络之间双向影响的可行性。
目标是（1）评估EMA与社会网络分析相结合方案的可行性和可接受性，以及（2）利用社会和建筑环境之间的个人层面、微观时间和动态重叠来识别表型。
这项具有探索性观察成分的混合方法可行性研究将从美国德克萨斯州中部的一个城市学区招募120名12至15岁的青少年。参与者首先将完成一项基线调查，以报告他们的一般社会网络模式和环境认知。然后，参与者将佩戴ActiGraph LEAP加速度计，并通过智能手机对EMA提示做出回应，为期7天。EMA将评估对社会网络和周围建筑环境的实时认知，这将与加速度计评估的身体活动数据进行时间匹配。每次EMA提示时将收集GPS坐标，以评估建筑环境的特征。后续的半结构化访谈将评估方案的可接受性。
本研究已获得美国国立心肺血液研究所的资助。预计在2025年、2026年和2027年夏季进行数据收集。
这种创新方法结合了EMA、SNA、加速度测量和GPS数据，为夏季社会网络、建筑环境和青少年身体活动之间的动态相互作用提供了前所未有的见解。研究结果将为制定更有针对性、更有效的干预措施以促进青少年身体活动提供信息。虽然局限性包括潜在的参与者负担和普遍性，但该研究在获取实时、情境化数据方面的优势使其对理解青少年身体活动的决定因素做出了有价值的贡献。
国际注册报告识别码（IRRID）：PRR1-10.2196/68667。
