Physical inactivity is a major cause of disease, both in the United States and globally. Physical activity interventions often use a multi-level and community-based approach combining individual and group-based behavioral strategies to promote physical activity and influence social norms. Such interventions can increase their impact by adopting technology-based solutions to facilitate the underlying behavioral strategies. Current technologies for persuading physical activity primarily focus on facilitating individual-level behavioral strategies and de-emphasizing interpersonal aspects. This article focuses on the design and evaluation of technology aimed at facilitating group dynamics-based strategies for promoting physical activity within small socially-connected teams. This work introduces a multi-component smartwatch-centered system called FitAware that uses sensors to automatically track physical activity and leverage the advantages of the watch form factor to facilitate both group and individual level behavioral strategies via non-interruptive, glanceable, and frequent updates. This article describes the design and evaluation of FitAware in the context of an 8-week statewide physical activity community-based intervention.

缺乏运动是美国和全球疾病的主要原因。体育活动干预通常使用基于社区的多层次方法，结合基于个人和基于群体的行为策略来促进体育活动并影响社会规范。通过采用基于技术的解决方案来促进基本的行为策略，此类干预措施可以增加其影响。劝说体育活动的当前技术主要集中在促进个人层面的行为策略和不重视人际关系方面。本文着重于技术的设计和评估，旨在促进基于小组动力学的策略来促进与社会相关的小型团队的体育活动。这项工作引入了一个名为FitAware的多组件智能手表为中心的系统，该系统使用传感器自动跟踪身体活动并利用手表外形的优势，通过不间断，可浏览和频繁的更新来促进小组和个人级别的行为策略。本文在为期8周的全州性体育活动基于社区的干预措施的背景下描述了FitAware的设计和评估。