... (force enhancement) and decreases after active shortening (force depression). In addition to cross-bridges, titin has been suggested to contribute to force enhancement and depression. Although titin is too compliant in passive muscles to contribute to active tension at short sarcomere lengths...

...Shawn M. O'Connor; Elton J. Cheng; Kevin W. Young; Samuel R. Ward; Richard L. Lieber ABSTRACT Laser diffraction (LD) is a valuable tool for measuring sarcomere length ( L s ), a major determinant of muscle function. However, this method relies on few measurements per sample that are often...

...: walter@kin.ucalgary.ca ) 17 5 2003 © The Company of Biologists Limited 2003 2003 passive force skeletal muscle stretching titin cross-bridge theory sarcomere length stability molecular spring calcium It is well accepted that force increases when an active muscle...

... other than sarcomere length non-uniformity alone are operative. A second cut was made on the posterior, lateral thigh and the tibial nerve was exposed and implemented with a bipolar cuff-type electrode for soleus stimulation. The cat was secured in a prone position in a hammock and the pelvis, thigh...

...LAWRENCE C. ROME; R. MCNEILL ALEXANDER The aim of this study was to evaluate how fish locomote at different muscle temperatures. Sarcomere length excursion and muscle shortening velocity, V , were determined from high-speed motion pictures of carp, Cyprinus carpio (11–14 cm), swimming steadily...