Dictionary

fast–twitch

adjective \ˈfas(t)-ˌtwich\

Definition of FAST-TWITCH

:  of, relating to, or being muscle fiber that contracts quickly especially during brief high-intensity physical activity requiring strength — compare slow-twitch

First Known Use of FAST-TWITCH

1970

fast–twitch

adjective \ˌfas(t)-ˌtwich\   (Medical Dictionary)

Medical Definition of FAST–TWITCH

:  of, relating to, or being muscle fiber that contracts quickly especially during brief high-intensity physical activity requiring strength—compare slow-twitch

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