Effectiveness of a Physical Exercise Prescription Program in Primary Care to Improve Physical Fitness and Quality of Life in Adults Aged 65 Years and Older in a Rural Health Area: PREFIS-AP Randomized Controlled Trial

This randomized controlled trial aims to evaluate the effectiveness of an individualized Physical Exercise Prescription Program delivered in Primary Care for adults aged 65 years and older. The intervention includes a structured assessment of physical fitness, muscle function and mass, physical activity level, and quality of life, followed by a tailored exercise plan encompassing aerobic, strength, respiratory, flexibility, and balance training. Outcomes will be compared with a control group receiving standard health advice to walk briskly for at least 30 minutes daily. The study also explores associations between polypharmacy, muscle function, physical performance, and quality of life.