Cross-bridge movements during a slow length change of active muscle.
Tension changes caused by slow stretch or release of actively contracting muscle are accompanied by axial displacements of myosin heads (i.e., cross-bridges) from the positions characteristic of isometric contraction. The direction of the axial displacement appears to affect the rate of cross-bridge detachment or reattachment during muscle-length changes.
D000818:Animals; D009119:Muscle Contraction; D009132:Muscles / Q000502:physiology* / Q000648:ultrastructure; D011892:Rana catesbeiana; D013997:Time Factors; D014961:X-Ray Diffraction