Abstract
Isokinetic movements are performed with maximum muscular effort resulting in maximal knee joint loading throughout the range of movement. The calculation of joint forces and therefore estimation of knee loading requires the accurate measurement of the moment exerted on the dynamometer and the gravitational moment acting on the system. The purpose of this study therefore was the examination of different methods for the measurement of the gravitational moment and the calculation of muscular and tibiofemoral forces during eccentric isokinetic knee exercises at angular velocities ranging from 0.52 to 2.62 rad s−1, using a biomechanical model of the knee joint.