社会生态模型是当前国际上体力活动（身体锻炼）干预研究的重点之一，其在我国人群的研究仍有待加强。申请人前期研究发现我国农村老年居民慢性病负担重但体力活动水平较低，加之农村人口老龄化问题突出，因此拟利用社会生态模型开展农村老年居民体力活动干预的研究。拟将社会生态模型与健康信念模式、社会认知理论和社区组织与社区建设理论的经典概念进行整合，从而创建本项目的理论基础。并在此思路下，通过了解农村老年居民体力活动的影响因素，按照随机对照试验设计，从个体、人际和社区层面分别利用传播材料、自我监测、电话咨询、个性化援助、自愿小组、交流活动会、集中培训会和关键人物参与对干预组进行干预。最后拟采用RE-AIM框架评估项目效果和项目外推性。本研究将探索基于社会生态模型的农村老年居民体力活动干预模式，以期促进社会生态模型的理论发展，并为今后类似的研究提供经验和为相关卫生政策的制定提供理论依据和政策建议。

Socio-ecological model has been successfully adopted in studies promoting physical activity around the world, especially in developed countries. Nevertheless, little emphasis has been placed on such research in China. My previous research showed that the chronic disease burden in rural older adults has become a daunting health challenge, especially considering the low level of physical activity in this group. Therefore, this study seeks to use socio-ecological model to guide an intervention to increase physical activity in rural older population. It proposes to conceptualize an intervention model by integrating socio-ecological model with constructs from Health Belief Model, Social Cognitive Theory, and Community Organization and Community Building theories, in the light of impact factors of physical activity behavior. It aims to change participants’ physical activity at individual level, interpersonal level, and community level. Promoting materials, self-monitoring, telephone consultation, individualized assistance, group activities, interactive meeting, training session, and key figure involvement will be provided and established as intervention measures. RE-AIM (Reach, Efficacy, Adoption, Implementation, and Maintenance) framework will be applied to evaluate the pre-post and intervention-control differences as well as external validity. The established intervention model may provide valuable information for future study designs and yield evidences to inform decision-making of health policy in rural China.