Assertion: sprinter | /r/HasAspect | fast-twitch muscle fibers
Facets:
value: primarily
type: DEGREE
Source sentences:
text: As a result, marathoners typically contain a significant amount of slow-twitch muscle fibers while sprinters primarily have fast-twitch muscle fibers.
text: Although physical fatigue of the muscles influences all runners’ performance, sprinters may be affected more often because they tend to have more fast-twitch muscle fibers.