Fig. 7. Variations in stiffness among the five segments studied at P_o or 0.25 of P_o. Stiffness declines from the tendon to the aponeurosis, and the tendon was significantly (P<0.05; indicated on graph) stiffer than all three regions that did not include any overlap between tendon and aponeurosis. In addition, while the general pattern holds for contractions at 0.25 of P_o, the tissue is much more compliant. TEND, tendon; PTDA, proximal tendon/distal aponeurosis; DA, dorsal aponeurosis; MA, middle aponeurosis; PA, proximal aponeurosis.