Fig. 9. (A,B) Scatter plots showing variation in peak plantaris stress as a
function of EMG duty cycle (A) and EMG intensity (B) for all six individuals.
(C,D) Plots for peak stress vs EMG duty cycle (C) and peak stress
vs EMG intensity (D) for frog 5. Regression lines and partial
coefficients of determination (r2) were calculated in the
same manner as in Fig. 6.