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.
Read more about this topic: ACTN3
Famous quotes containing the words fast, slow and/or twitch:
“Overly persuasive a woman’s ordinance spreads far, traveling fast; but fast dying a rumor voiced by a woman perishes.”
—Aeschylus (525–456 B.C.)
“Most new things are not good, and die an early death; but those which push themselves forward and by slow degrees force themselves on the attention of mankind are the unconscious productions of human wisdom, and must have honest consideration, and must not be made the subject of unreasoning prejudice.”
—Thomas Brackett Reed (1839–1902)
“our nerve filaments twitch with its presence
day and night,
nothing we say has not the husky phlegm of it in the saying,
nothing we do has the quickness, the sureness,
the deep intelligence living at peace would have.”
—Denise Levertov (b. 1923)