It’s widely established that a lack of adapted physical activity (APA) and sedentary behaviors increase the prevalence of frailty, worsening chronic diseases. Hospital stays amplify this phenomenon, causing often irreparable physical deconditioning in elderly patients if not quickly detected and treated. To date, there is no APA-focused standard of care to address frailty acquired during hospitalization. In this context, SHAPE aims to prevent dependency in older adults with chronic diseases by developing an innovative patient pathway based on APA. The project seeks to reduce frailty acquired during hospital stays by establishing standards for APA prescription, based on early diagnosis and care. SHAPE ensures equitable access to care through an accessible and ergonomic web platform, designed for elderly and rural users. It fosters healthcare system resilience by integrating a preventive and multidisciplinary approach into hospital treatments and optimizes resources through a stepped care model that provides progressive and personalized care. First, a contextual study will be conducted in five hospitals to model the pathway and define a rigorous evaluation protocol. Then, a randomized controlled trial (RCT) with 500 subjects will be carried out to assess intervention efficacy over 24 weeks. Thanks to the diverse experiences gained, SHAPE plans to build a transposable model that will be tested in three additional hospitals. Furthermore, the project will perpetuate its action through a training pathway for future sport science professionals, stimulating the supply of prevention services. Finally, SHAPE aims to facilitate its large-scale adoption by public authorities and private health actors, through the creation of a white paper and the implementation of a sustainability plan.