The Effect of Functional Exercise Interventions for Older Adults With Sarcopenia: A Hybrid Approach Study Aiming for Community Implementation

Sarcopenia is one of the major causes of functional decline and negative health outcomes among older adults. Prominent evidence suggests exercise interventions can reverse sarcopenia. However, past studies mainly focus on structured exercise programs, automatically excluding many older adults who are not motivated and lack the time/resources to conduct the structural exercise. Therefore, we propose to examine the effect of the Sarcopenia Translation functional Exercise Program (the STEP program) on community-dwelling older adults. The STEP is a functional exercise program designed to address low motivation and other time/resources barriers for rapid translation in community settings. The 12-week STEP program teaches older adults to apply functional exercise activities incorporating resistant training principles in their daily routines. With a dual focus apriori in assessing clinical effectiveness and potential implementation strategies for future community implementations, we will conduct a single-blind randomized control trial among 60 community-dwelling older adults at risk or with sarcopenia. The study's purposes are threefold: (1) to assess the effect of the functional exercise intervention compared to usual care on primary outcomes of sarcopenia (muscle strength, muscle mass, and physical function); (2) to assess the long-term effects of the functional exercise intervention on primary outcomes of sarcopenia; (3) explore potential implementation strategies for rapid community implementation including development of a communityappropriate protocol for tracking long-term effects such as metabolomic biomarkers. This study aims to develop an effective functional exercise program as an alternative to structured exercise programs. Additionally, the goal is to accelerate the translation of the functional exercise program for older adults at risk or with sarcopenia in real-world settings.