The civilian population that enters military life is exposed to different risk factors that contribute to developed injuries, especially in the first months of entry. Physical condition assessments are not sufficient to evaluate military neuromuscular (lower body) and the proprioceptive component, which determines joint stability and motor control. These are protective factors for injury and determine physical performance in men and women. Previous studies have found that the asymmetries present in the lower body of military personnel have a probability of generating injuries 3 times more in men and 6 times more in women.PURPOSE: Evaluate the relationship between lower body asymmetries and alterations in bipedal posture. METHODS: A descriptive cross-sectional study with a descriptive componente, 50 cadetes of the Military School of Colombian (ESMIC) (male=20 ; women 30) were tested, who enter the ESMIC in 2021. The neuromuscular condition is evaluated by means of the counter movement jump test (CMJ) using a uniaxial force platform (PASCO) and the postural stability test with the Romberg test, using a triaxial platform (AMPTI). The lower body force variables that were taken into account were: eccentric force, concentric force and asymmetries in the vertical jump (CMJ) and postural control through the Romberg index (RI), which is measured in the standing position on the force platform (1 minute with eyes open (OE) and then with eyes closed (CE). Statistical analysis is performed using cross tables in Mintab to evaluate the associations between the variables. RESULTS: No significant relationships were found between asymmetries and gender (p = 0.1718), however, a high correlation was found between concentric and eccentric asymmetries of the impulse phase with the Romberg index (p = 0.0005).CONCLUSIONS: Postural instability and lower body asymmetries alter the ability of the neuromuscular system to transfer forces and energy to other structures and tissues in the body. The increase in injuries in the military, in the first year of admission, could be conditioned by alterations in balance and eccentric and concentric asymmetries of the lower body that could be more accentuated with increased training and fatigue.