twitch muscle


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twitch muscle

Muscle fibers that can conduct axon potentials along their cell membranes. Almost all skeletal muscle in humans is twitch muscle. A very small number of muscles in humans are tonic muscles. Twitch muscles cells can be categorized into a number of types on the basis of the biochemical cycle that they use to produce their energy: red (oxidative), white (glycolytic), or intermediate (oxidative/glycolytic). Most human muscles are composed of a mix of twitch muscle cell types.
See also: muscle
References in periodicals archive ?
As their name suggests, slow twitch muscles release the gas at a much slower and consistent rate than fast twitch fibres do - a trait which gives players from the Northern hemisphere more stamina and endurance than is often found naturally in players on Southern hemisphere sides.
05 mm/ms recorded during this PNS pulse setting was approximately twice that seen for PNS pulse settings between 250 [micro]s and 500 [micro]s and supports the contention that short PNS pulse durations only allow for the recruitment of small motorneurons that innervate slow twitch muscle fibers.
We have another type - unsurprisingly called slow twitch muscle fibres.
If you have plenty of fast twitch muscle fibres, you're going to be good at endurance sports such as marathons.
Therefore, those genetically predisposed to a high fast twitch muscle fiber composition have a greater capacity to develop muscle strength.
We are born with a certain percentage of fast twitch and slow twitch muscle fibers and their proportional makeup in our muscles will determine, to a certain extent, our ability to move quickly.
In addition, the size of type II or fast twitch muscle fibers, which contract quickly and powerfully but have little endurance, declined by about 6.