Figure 3

Mean power output, isokinetic peak torque (PT), mechanomyographic (MMG) amplitude, and MMG mean power frequency (MPF) responses with increases in velocity during maximal eccentric isokinetic muscle actions. (A) Relationship between mean power output and angular velocity during maximal eccentric isokinetic muscle actions of the leg extensors. (B) Relationship between isokinetic peak torque and angular velocity during maximal eccentric isokinetic muscle actions of the leg extensors. (C) Relationship between mechanomyographic (MMG) amplitude (averaged across the rectus femoris, vastus lateralis, and vastus medialis muscles) and angular velocity. (D) Relationship between MMG mean power frequency (MPF, averaged across the rectus femoris, vastus lateralis, and vastus medialis muscles) and angular velocity. The data presented in each graph are the mean values from 24 subjects, and all MMG signals were recorded with a piezoelectric contact sensor (HP 21050A).