Contraction-induced injury to single muscle fibers: velocity of stretch does not influence the force deficit.

@article{Lynch1998ContractioninducedIT,
  title={Contraction-induced injury to single muscle fibers: velocity of stretch does not influence the force deficit.},
  author={Gordon S Lynch and J. A. Faulkner},
  journal={American journal of physiology. Cell physiology},
  year={1998},
  volume={275 6},
  pages={C1548-C1554}
}
We tested the null hypothesis that the severity of injury to single muscle fibers following a single pliometric (lengthening) contraction is not dependent on the velocity of stretch. Each single permeabilized fiber obtained from extensor digitorum longus muscles of rats was maximally activated and then exposed to a single stretch of either 5, 10, or 20% strain [% of fiber length ( L f)] at a velocity of 0.5, 1.0, or 2.0 L f /s. The force deficit, the difference between maximum tetanic isometric… CONTINUE READING

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