Figure 2. Passive mechanical protocol with example data from a C57 EDL muscle. (A) After preconditioning stress relaxation is held for 2 minutes with Squares representing maximum stress (dynamic stiffness), and circles representing stress at 2 minutes used to (elastic stiffness). (B) Strains of 2.5- 15%, with a ramp stretch of 1 fiber length/second and held for 2 minutes. (C) Stiffness is determined from a quadratic fit to the stress strain curves taking the tangent modulus at 10% strain for both dynamic and elastic stiffness. From Smith and Barton, 2014.
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