Fig. 6. The relationship between phase of EMG activity and tailbeat frequency during sprinting. Onset and offset times of EMG activity are relative to the sinusoidal, 360°, strain cycle. Muscle is at resting length l0 at 0° and maximum length at 90°. Blue, red and green points represent data from 0.35, 0.5 and 0.65FL, respectively, where FL is fork length. Values from different fish are shown with different symbols. Data are from six fish, with five measurements from each individual. Equations for the lines are presented in Table4.
