This is a cross-sectional descriptive study whose objective is to relate the degree of physical activity and sedentary lifestyle with performance in biomechanical evaluation tests, in a sample of 60 students from 15 to 16 years old in a School located in San Miguelito District, province of Panama. Divided according to the level of physical activity obtained in the IPAQ short version in Spanish, in two groups of ? and ?: Active Group and Sedentary Group, evaluated anthropometrically and through biomechanical tests to determine power (lower train), strength (upper limbs) and endurance (aerobic capacity).

No significant differences were found for age, weight and height. In men, the BMI showed no significant difference, while it was significant in women (P?0.001). The BF% was of statistical significance in both males (P?0.03) and females (P?0.0006). No significant difference was found in the biomechanical evaluation of power and strength.  In contrast, for the resistance, the difference was significant for the METs obtained in the IPAQ and the VO2max in both, men (P?0.0001 and P?0.0001) and women (P?0.0001 and P?0.01) respectively.