“…Some properties of cou- 13 pled contraction-activation dynamics are well-established, 14 for instance the force-length relation of muscle fibers 15 [4,5, 11,21,35,36,45,79,84,98] or the visco-elastic characteristics of 16 tendon material [34,49,50,73,75,76,80,107] . A near-static condition, 17 such as an isometric contraction, is appropriate for determining 18 static properties, i.e.…”