Fig. 5.
The smooth muscle model (–) was fit to isometric active first Piola-Kirchhoff stress data (○) extracted near the optimal value of circumferential stretch. Shown are the early development of active stress upon stimulation (left) and the mean active stretch-stress behavior following 5 min of contraction (right). Note that it was assumed that no adaptation occurs within the initial 5 minutes of stimulation, hence yielding the virgin behavior. This fit was obtained by setting kAMp = 1.423·10−3 N/m, kpSE = 4.371·10−4 N/m, and = 1.616·104 s−1