Through physical activity and calcium intake with respect to bone health in schoolchildren in Villavicencio; the following objectives are to be achieved: to characterize sociodemographic variables, clinical history and drug use of study participants; establish physical activity levels in participating schoolchildren; establish bone mineral density by both DEXA and participant anthropometry; establishes the anthropometric condition of the participants; estimate the predictive model of bone health in participating schoolchildren. The applied methodology presented the type of descriptive – transversal research, with a comparative and predictive phase. The population corresponded to the total number of schoolchildren between 8 and 16 years of age of the public and private schools of the city of Villavicencio. Inclusion and exclusion criteria were established; techniques and instruments equivalent to survey observation and application techniques were also used; procedures were also developed in line with the approaches to the proposed objectives; the analysis plan was also established, through the SPSS version 24 program, licensed by the Autonomous University of Manizales. Results commensurate with the construction of sociodemographic variables, clinical history and drug use of study participants; it allowed to know and identify the following aspects: gender, CAT stratum, drug use and category of medicines, levels of physical activities in schoolchildren, bone mineral density both by, anthropometric condition, among others.