Stiffness and tension changes when a skinned fiber is put into high-Ca²⁺ rigor state.

<p>The fiber was first activated maximally in contracting solution, and then transferred into high-Ca rigor solution. Arrows indicate timing of solution exchanges. In this and <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0162003#pone.0162003.g003" target="_blank">Fig 3</a>, upper traces show changes in in-phase stiffness and quadrature stiffness, while lower trace shows tension. The tension increment on application of rigor solution is an artefact accompanying solution exchange procedure.