Fast Versus Slow Twitch Muscle Fibers
Skeletal muscle is composed of long cylindrical cells called muscle fibers. There are two types of muscle fibers, slow twitch or muscle contraction (type I) and fast twitch (type II). Slow twitch fibers are more efficient in using oxygen to generate energy whilst fast twitch fibers are less efficient. However, fast twitch fibers fire more rapidly and generate more force.These are also called the white muscle fibers and red muscles fibers respectively.
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Famous quotes containing the words fast, slow and/or twitch:
“In a herber green, asleep where I lay,
The birds sang sweet in the mids of the day;
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In youth is pleasure, in youth is pleasure.”
—Robert Wever (fl. C. 1550)
“The Cretans are always liars, evil beasts, slow bellies.”
—Bible: New Testament St. Paul, in Titus, 1:12.
Cited by Paul, this remark is attributed to Epimenides.
“our nerve filaments twitch with its presence
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nothing we do has the quickness, the sureness,
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—Denise Levertov (b. 1923)