Also found in: Dictionary, Thesaurus, Encyclopedia.


A skeletal muscle cell.

type 1 myofiber

A skeletal muscle cell that has a rich concentration of myoglobin and oxidative enzymes. Also known as “red” or “slow twitch” myofibers, these cells rely principally on aerobic metabolism for energy.

type II myofiber

A skeletal muscle cell with little myoglobin content. Also known as “white” or “fast-twitch” myofibers, these cells rely principally on anaerobic metabolism for energy.
References in periodicals archive ?
It may be suggested that myofibers in group B couldn't preserve their orientation because of potential mechanisms underlying the statin induced myopathy.
With computational means to assess biomarkers, researchers can rapidly analyze hundreds to thousands of myofibers across entire muscle sections, aiming for an objective assessment of the tissue.
In the past decades, these cells have been investigated for muscle tissue bioengineering approaches, allowing the growth of new myofibers [2, 3, 32, 33].
Caption: Figure 2: Myofiber types in the muscle of D-galactosamine-treated and D-galactosamine-untreated mice.
Mitochondria are accounted for more than 20% volume density in myofibers, which play a critical role in muscle's functional properties [39-41].
Primary myofibers are more genetically determined, therefore less affected from maternal environment (Maltin et al., 2001).
The central nucleus is an indicator of myofiber regeneration (Charge and Rudnicki, 2004; Morioka et al., 2008; Matsuba et al., 2009; Tidball and WehlingHenricks, 2007).
Our preliminary studies indicated that electroacupuncture (EA) at the ST36 and Ashi acupoints could promote regeneration of the rabbit gastrocnemius (GM) by improving microcirculation perfusion, promoting the recovery of myofiber structures, and inhibiting excessive fibrosis.
(2006) Efficacy of 3 days/wkresistance training on myofiber hypertrophy and myogenic mechanisms in young vs.
Tremblay, "Electroporation as a method to induce myofiber regeneration and increase the engraftment of myogenic cells in skeletal muscles of primates", Journal of Neuropathology and Experimental Neurology, vol.
M1/70 attenuates blood-borne neutrophil oxidants, activation, and myofiber damage following stretch injury.