Assess and apply the COM-B model to design individualized physical activity interventions for older adults with chronic conditions. Test the ability to: perform a COM-B assessment (Capability, Opportunity, Motivation), identify barriers and facilitators, map components to evidence-based behavior change techniques and implementation strategies (e.g., tailored exercise prescription, environmental modifications, social support, motivational interviewing, self-monitoring), address safety and comorbidity limitations, and define measurable outcomes and an evaluation plan. Provide a concise intervention plan for a brief case or synthesized profile, with theoretical and geriatric rationale.