Tension Recovery following Ramp-Shaped Release in High-Ca and Low-Ca Rigor Muscle Fibers: Evidence for the Dynamic State of AMADP Myosin Heads in the Absence of ATP
Fig 5
Diagram illustrating method of estimating amplitude of tension recovery.
Upper and lower traces show length and tension changes of the fiber, respectively. The fiber is activated maximally in contracting solution, and transferred to high-Ca rigor solution. On application of release, the initial elastic tension drop from To to T1 is followed by the subsequent tension recovery from T1 to T2. The amplitude of tension recovery relative to To is expressed as Trec = (T2–s1) / To.