Inclusion Criteria:  Community-dwelling adults with age equal or greater than 70 years. Barthel index > 85 Gait speed < 0.8 m/s Ability to realize the physical exercise program Capacity to understand the procedures and interventions of the trial Capacity to understand and sign the informed consent  Exclusion Criteria:  Major contraindications for exercise: Severe aortic valve stenosis, myocardial infarction in the previous 6 weeks, Venous thromboembolic disease in the previous 6 weeks. Inability to conduct the physical tests of the trial Inability to understand the procedures of the trial Active solid organ or hematologic neoplasm other than basocellular skin neoplasm, or life expectancy lower than one year. Surgical intervention programmed that could interfere with the physical exercise program.