Effect of a Multicomponent Therapeutic Exercise Program in Primary Care on Frailty and Sarcopenia in Older Adults

This intervention consists of a 12-week multicomponent therapeutic exercise program for older adults with mild to moderate frailty. Participants will complete 12 sessions (8 supervised in primary care and 4 home-based), each lasting approximately 60 minutes. Sessions include warm-up, strength exercises (using body weight or elastic bands), moderate aerobic activity (e.g., walking or pedaling), balance and coordination training (including dual tasks), and a cool-down phase. The program follows FITT-VP principles and is tailored to functional capacity. Intensity is monitored using the Borg scale (CR10 and RPE), estimated 1RM (20-80%), and 64-76% HRmax. Exercises are progressively adjusted in volume, intensity, and complexity. Home sessions are guided by an illustrated manual and reinforced by biweekly follow-up phone calls to promote adherence and safety. The intervention is aligned with international guidelines and aims to improve physical performance, reduce frailty and sarcopenia.

The pre-intervention period (Month 0 to Month 3) will serve as the control phase, during which participants will receive no specific exercise program. From Month 3 to Month 6, the intervention phase will begin. Participants act as their own control.