Figure 2

Mean power output, isokinetic peak torque (PT), mechanomyographic (MMG) amplitude, and MMG mean power frequency (MPF) responses with increases in velocity during maximal concentric isokinetic muscle actions. (A) Relationship between mean power output and angular velocity during maximal concentric isokinetic leg extensions. (B) Relationship between maximal concentric isokinetic leg extension peak torque and angular velocity. (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 26 subjects, and all MMG signals were recorded with a piezoelectric contact sensor (HP 21050A).