Age and Sex Effects on the Active Stiffness of Vastus Intermedius under Isometric Contraction

Figure 6

Comparison of the relationships between VI shear modulus and absolute torque at 90° and 60° knee joint angles for (a) young male subjects; (b) young female subjects; (c) elderly male subjects; and (d) elderly female subjects.

(a)

(b)

(c)

(d)