Isometric and isokinetic torques of bilateral quadriceps and hamstrings were measured with Isokinetic Rehabilitation and Testing System (Model No. Cybex 340) on 40 normal untrained subjects, 20 males and 20 females, ranging between the ages of 23 and 35 years. The mean peak isometric and isokinetic torque values of both muscle groups showed no significant differences between dominant (right) and nondominant (left) limbs in both sexes; however there were significant differences between the male and the female. As the angular velocity increased, the peak torque significantly decreased, and the point of peak torque output occurred significantly later in the range of motion for quadriceps and hamstrings (p < 0.01). There were no significant changes in the hamstrings to quadriceps (H/Q) ratios as the angular velocity increased. However, there were significant differences of mean H/Q ratio between male and female (p < 0.01). Height had significant positive correlation with peak isometric and isokinetic torques for both quadriceps and hamstrings (p < 0.01). Weight was found to correlate significantly with peak isometric and isokinetic torques (p < 0.01). The mean isometric torques were significantly higher than the mean isokinetic torques for any joint angles in both sexes (p < .01).