Fig. 2.
Methods used for evaluation of contractile properties of the quadriceps femoris muscle evoked by electrically evoked muscle stimulation at 10 Hz. The torque elicited at 10 Hz stimulation was first expressed as a percentage of the maximal torque evoked at 150 Hz (T150). T10 was the peak value of the 10 Hz torque trace. The force oscillation amplitude (FOA) was determined by expressing the mean amplitude of the torque oscillation (Os) between the fourth and seventh stimulus as a fraction of the mean torque (Tm) during this time