Length-Force Relation of Calcium Activated Muscle Fibers

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Science  07 Apr 1972:
Vol. 176, Issue 4030, pp. 52-54
DOI: 10.1126/science.176.4030.52


Calcium activated skinned frog muscle fibers develop a large relative force at a sarcomere length of 1.0 micrometer. Since the normal myofilament lattice is perturbed at this length, regularity of the lattice does not appear to be an important factor in the contraction mechanism.