Adolescents with overweight and poor physical fitness have an increased likelihood of developing cardiovascular diseases during adulthood. In Ecuador, a health promotion program improved the muscular strength and speed-agility, and reduced the decline of the moderate-to-vigorous physical activity of adolescents after 28 months. | Two years of school-based intervention program could improve the physical fitness among Ecuadorian adolescents at health risk: Subgroups analysis from a clusterrandomized tria