This semi-experimental study aimed to investigate the impact of personalized and supervised exercise on the physical fitness of elderly people. Ninety people aged 60 or over took part in the study, in which significant improvements were observed in various dimensions of physical fitness. The data analyzed showed significant improvements in several dimensions of physical fitness. In particular, localized muscular strength and endurance showed substantial gains, highlighting the effectiveness of our exercise programs in improving functional capacity. When comparing the diagnostic and formative assessments, differences were observed, including improvements in body composition, localized muscular endurance, muscular strength and a positive evolution in the general fitness index (∆% = 7.89%, p>0.0001). This study emphasizes the possible benefits of individualized and supervised exercise programs to promote physical fitness and independence in the elderly population.