Definition of fast-twitch in English:

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fast-twitch

adjective

[attributive] Physiology
(Of a muscle fibre) contracting rapidly, thus providing strength rather than endurance.
Example sentences
  • That explosion is what stimulates the fast-twitch muscle fibers, which are the ones you want to target for building mass.
  • The machine vibrates at such a high frequency it stimulates fast-twitch muscle fibers.
  • ‘That's an interesting question, but I'd say it combines reflexes for fast-twitch muscles and slow-twitch muscles, cardiovascularly and muscularly,’ he says.
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