Figure 2
On/off centers in the torque planes of the ankle (top), knee (middle), and hip (bottom). Vertical and horizontal axes represent joint torque and joint torque velocity, respectively; positive sign represents ankle dorsiflexion, knee extension, and hip anteflexion. Dark blue and light blue circles represent the centers of on-area and off-area, respectively, for all trials (80 samples for each muscle). Gray background represents an anatomically indirect joint-muscle relationship.
