Definition of fast-twitch in English:
(Of a muscle fibre) contracting rapidly, thus providing strength rather than endurance.
- 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.
Definition of fast-twitch in:
- US English dictionary