Dual-Platform Digital Intervention for Cognitive Training and Social Participation in Older Adults

Age-related changes in cognitive function and social participation can jointly affect well-being in later life. Digital delivery models may provide a practical approach for supporting older adults, yet reproducible protocols that integrate cognitive training with structured online social participation remain insufficiently described. This article presents a protocol for a four-arm randomized controlled study designed to examine the implementation of a dual-platform digital intervention delivered over 12 weeks. The intervention includes a web-based Virtual Learning Environment (VLE) for adaptive cognitive training and a moderated Online Social Platform (OSP) for guided peer interaction. The protocol describes participant recruitment and screening, digital onboarding procedures, intervention scheduling, adherence monitoring, and safety governance for remote participation. Outcome collection includes measures of global cognitive performance, processing speed, loneliness, and social participation, together with process indicators relevant to protocol implementation. Representative findings are included to illustrate platform uptake, retention patterns, and expected outcome trajectories across study arms. These findings are preliminary and are presented to demonstrate protocol implementation rather than to establish clinical efficacy. This protocol may support researchers and practitioners seeking to replicate or adapt remote, multi-component digital interventions for older adult populations.