Simulated Torque-Frequency Relationship.

<p><b>A:</b> Simulated stimulation protocol was a square wave with pre-determined frequency (20 Hz). Simulated activation responses for the 1^st and 60^th motor unit are plotted in dark and light grey dashed lines respectively. Total simulated torque for the combined model is plotted in black. <b>B:</b> Simulated torque traces in response to stimulation at a range of frequencies (10, 15, 20, 25, 30, 35, 40, and 45 Hz). Stimulation for each simulation began at 0.2 s. <b>C:</b> Comparison between simulated and experimental torque output in response to stimulation at frequencies between 10 and 50 Hz. Simulated torque values (closed symbols) were typically within one standard deviation of mean experimental values (open symbols ± SD).