PURPOSE: The instability of the knee and ankle joints are the main risk factors for injuries of the musculoskeletal system and soft tissues when they are subjected to high training loads, as is the case of the military in initial training. The lower train is subjected to accelerations, decelerations, changes of direction and jumps that involve high loads that must support the most distal and intermediate joints in order to absorb the impacts. The measurement of stability is routinely used to measure the risk factors of injury to the ankles and knee, being the most frequent in military training. PURPOSE: To determine the risk of lower train injury in Colombian military personnel by analyzing the dynamic stability METHODS: cross-sectional study in a cohort of 124 cadets. Of the participants in the study 87 (70.2%) were men and 37 women (29.8%), with an average weight of 62 ± 9.2 kg, age 18 ± 1 years, height of 1.70 ± 0,08 meters, which was admitted in the military school in 2017. The measurement of the unipodal dynamic stability was made by using uniaxial force platform. The variables were measured as a percentage of asymmetry of the dynamic stabilization time (26.24 ± 18,86 %) and percentage of asymmetry of the force peak in the landing (28.59 ± 17.62%). RESULTS: Of the total number of subjects, 41 presented lesions in the lower limbs during follow-up, corresponding to 33.1%. The logistic regression model developed to determine the risk factors associated with injuries in lower limbs, presented a significance of the model of P = 0.017, with a probability of success of 70%. The variables: Body mass index (OR 1.001, 95% CI 0.843 - 1.181), gender (OR 2.709, 95% CI 1.15 - 6.37), the difference of the right-left stabilization time (OR 6.66, 95% CI 1.33 - 32.14), the percentage of asymmetry of the stabilization time (OR 1.021, 95% CI 0.999 - 1.043), the percentage of asymmetry of the peak force (OR 1.015, 95% CI 0.977 - 1.055), are those that best predict the model. CONCLUSIONS: The stabilization time is a strong predictor of risk factors for lower train injuries. Likewise, gender and dominance of the lower limb are determining factors in the development of injuries under military training. Based on the results, it is considered a tool that can help to measure the risk factors in the military population in training and the controls throughout their training.