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I can find a great deal of information about how muscles contract, and how we divide them up into fast twitch and slow twitch and so forth. However, I can't seem to find anything on how fast a muscle fiber can relax.

How fast can a contracted muscle fiber stop providing force when the motor neuron stops innervating it?

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  • $\begingroup$ To clarify, are you sure you mean to ask what happens when a "motor neuron stops innervating" a muscle? Or do you mean to ask about the normal physiologic process of muscle relaxation. $\endgroup$ – De Novo Mar 9 at 21:44
  • $\begingroup$ I thought they were phrasings for the same thing, but perhaps I used the wrong term. A physical example of what I mean: I am doing a bicep curl. At a point near the top of the curl, I relax my muscle as much as possible and let the weight (and my arm) fall. I'm interested in how quickly my muscle can stop resisting that falling movement. $\endgroup$ – Cort Ammon Mar 9 at 21:47

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