Isokinetic Quadriceps and Hamstring Torque Levels of Adolescent, Female Soccer Players

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Abstract
Using a Cybex II(R) dynamometer, the quadriceps and hamstring torque levels of 16 female high school soccer players were measured. Both the dominant and nondominant knees were tested at a fast (1 80 per second) and slow (30 per second) speed. The results were similar to those of previous studies that used men as subjects. The conclusions were: 1) Extension torque is significantly greater than flexion torque for both legs and at both speeds. At 30 per second the hamstring1 quadriceps ratio is 0.6 1. This ratio increases to 0.78 at 180 per second. 2) There is no significant difference between dominant and nondominant legs for either flexion or extension torque at fast or slow speed. 3) At 30' per second, peak quadriceps torque is achieved at approximately 73 of extension, and peak flexion torque is achieved at approximately 38 flexion. 4) Slow speed flexion and extension torque levels are significantly greater than fast speed torque levels for both legs.J Orthop Sports Phys Ther 1984;5(4):196-200.

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