slow-twitch


Also found in: Medical.

slow-twitch

(slō′twĭch′)
adj.
Of or relating to skeletal muscle that is composed of weak, slowly contracting fibers, adapted for low-intensity, high-endurance activities.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
References in periodicals archive ?
Red muscle: Dark "slow-twitch" muscle, sometimes called the "mud line." These muscles are aerobic and need a constant supply of oxygen.
"This is accompanied by a loss of slow-twitch muscle fibers, which are needed for endurance," said Mortreux.
Loss of slow-twitch muscle fibers, which are crucial for endurance, will also occur. 
With mild exercise, only the slow-twitch muscle fibers are activated, not the fast-twitch muscle fibers.
Weighted bats wake up the slow-twitch system (and swinging a bat efficiently requires fast-twitch high performance)."
This way I'm able to train both fast-twitch and slow-twitch muscle fibers.
It is known that fast-twitch and slow-twitch muscle fibers differ in the number and size of sarcoplasmic reticulum [Ca.sup.2+] pumps, such that the slow-twitch fibers have a lower rate of [Ca.sup.2+] uptake, resulting in slower half-relaxation time (Stephenson et al., 1998).
Because of the paucity of relevant research in the existing literature, in the present study, we used old rats to examine the effects of 10-weeks of low-intensity aerobic training combined with BFR on hypertrophy response and nAChRs in 2 types of muscles: fast-twitch (the extensor digitorum longus [EDL]) and slow-twitch (the soleus).
In contrast, the soleus muscle has oxidative fibers predominance and a slow-twitch fibers majority (Table 1).
Endurance of the muscle is determined by slow-twitch fibers and while power is determined by fast-twitch fibers.
While there are multiple genes involved in athletic performance, given the association of PPARGC1A to mitochondrial biogenesis and conversion slow-twitch type I muscle fibers, this novel SNP may explain adaption in aerobic metabolism.