Ageing is associated with declines in physical and cognitive function that increase the risk of disability and dependence. Intrinsic capacity (IC), proposed by the WHO, provides a multidimensional framework to assess health in older adults. This study aims to evaluate whether a multicomponent recreational exercise programme (Fun Exercise for Older Adults (FEXO)) improves IC, motivation and adherence compared with a conventional programme (OTAGO).

A randomised controlled trial with two groups (2:1 ratio) will be conducted among 120 community-dwelling older adults (≥60 years). Participants will be randomly assigned to FEXO (intervention) or OTAGO (control). Both programmes will consist of 3 weekly sessions for 14 weeks. Primary outcomes: IC, assessed through validated measures (Short Physical Performance Battery, Mini Nutritional Assessment, Mini-Mental State Examination, Cornell Scale for Depression in Dementia and sensory evaluation), motivation (BREQ-3) and adherence rate. Secondary outcomes include body composition, cardiovascular parameters, frailty, cognition and resilience (PRIFOR). Data will be analysed using two-way ANOVA (groupxtime) under an intention-to-treat approach. Effect sizes (p²) and 95% CIs will be reported. Additional analyses (correlation, regression, mediation and moderation) will explore associations and intervention effects.

Approved by the Ethics Committee of Universidad CEU Cardenal Herrera (Ref. CEEI23/487 and CEEI25/639). Results will be disseminated through peer-reviewed journals and scientific conferences. The findings of this study will contribute to improving evidence-based strategies for promoting healthy ageing and will support the development of more engaging and effective exercise interventions for older adults.

This study has been prospectively registered at ClinicalTrials.gov (identifier: NCT07133568).