The Effect of Low-Level Activation on the Mechanical Properties of Isolated Frog Muscle Fibers

@article{Lnnergren1971TheEO,
  title={The Effect of Low-Level Activation on the Mechanical Properties of Isolated Frog Muscle Fibers},
  author={Jan L{\"a}nnergren},
  journal={The Journal of General Physiology},
  year={1971},
  volume={58},
  pages={145 - 162}
}
The mechanical properties, as revealed by minute length changes, of isolated twitch fibers of the frog have been studied at rest and during low-level activation. Resting tension is 77 +/- 23 mN/cm(2) (mean +/- SD) at 2.2 microm sarcomere length.(1) The slope of the tension curve (DeltaP/DeltaL) recorded during a constant-speed length change of a resting fiber is initially large. At length changes exceeding about 0.18 % of the initial length of the fiber DeltaP/DeltaL falls abruptly and remains… CONTINUE READING
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