Bilateral eccentric and concentric torque of quadriceps and hamstring muscles in females and males

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Abstract
This study assessed maximum eccentric (ECC) and concentric (CON) torque of quadriceps (QUAD) and hamstring (HAM) muscle groups in healthy females (n=13) and males (n=27). Peak torques (PT) of bilateral muscle actions were recorded at constant angular velocities of 0.52, 1.57 and 2.61 rad·s−1. The QUADcon and HAMcon PT decreased (pecc and HAMecc PT increased (pecc PT decreased (pecc PT showed no change in males. In general, ECC PT was higher (pppcon and HAMcon were reduced (pecc and HAMecc were abolished. The CON and ECC PT were, on average, 60% and 41% greater, respectively, in males than in females. The corresponding differences, when adjusted for body mass, were 23% and 8%. ECC:CON PT for QUAD were higher (ppecc PT relative to QUADcon PT than males.