+AGIL Barcelona: Integrated Care for Community-Dwelling Frail Older Adults

Population aging requires the implementation of sustained integrated strategies and programs to improve intrinsic capacity and delay disability in older adults. The +AGIL Barcelona program exemplifies a pragmatic, multicomponent intervention that effectively improves physical function by integrating health and community resources. This study aims to co-design, adapt, and scale up +AGIL to diverse socioeconomic areas in Barcelona, assessing its effectiveness and evaluating the process of progressive implementation. Methods: Multicenter, pragmatic, Stepped-Wedge Cluster Randomized Trial, performed in three Primary Care Centers in Barcelona (PCCs), involving older adults screened as frail by the Gérontopôle Frailty Screening Tool (total sample size=396, 198 per arm). After a co-design phase to adapt the protocol to each local context, the intervention will be introduced sequentially at each site, according to a randomly determined schedule, until all PCCs are exposed. The intervention, previously piloted in a different PCC, is based on a Comprehensive Geriatric Assessment followed by a 10-week tailored boost multicomponent intervention aligned with the Integrated Care for Older People (ICOPE) framework of the World Health Organization - WHO - (physical exercise being the core element). After three months, continuity of activation is pursued through the integration of community resources (public or private gyms, civic centers etc). The primary outcome will be. The investigators designed a mixed-methods evaluation, measuring physical performance improvement using the Short Physical Performance Battery (SPPB) as the primary quantitative outcome, plus a qualitative assessment of participants' experience and program implementation. Discussion: This study will provide relevant information on the implementation and impact of pragmatic, real-life interventions to improve intrinsic capacity and prevent disability in older adults.