slow-twitch fibers

One of the two main types of skeletal muscle, which contains abundant mitochondria and myoglobin. Red muscle fibres contract and fatigue more slowly than white fibres and generate ATP by aerobic catabolism of glucose and fats, utilizing myoglobin-bound O2

slow-twitch fi·bers

(slō-twich fī'bĕrz)
Histologically distinct skeletal muscle fibers that generate energy predominantly through the aerobic energy transfer system; are selectively recruited in aerobic activities.
Synonym(s): slow-oxidative (SO) fibers, Type I fibers.
References in periodicals archive ?
It's great that you are creating a better balance by focusing on the slow-twitch fibers that increase your aerobic capacity.
What's the difference between light meat and dark meat, or slow-twitch fibers and fast-twitch fibers?
This finding was particularly interesting because it is exactly opposite of what would be expected from conventional fiber type-based explanations of EMG frequency, where fast-twitch fibers would have higher frequency EMG spectra than slow-twitch fibers.
Type I fibers are slow-twitch fibers, and they are built for fatigue resistance.
Slow-twitch fibers (also called "Type 1 muscle fibers") activate and deactivate slowly, but when activated they are also very slow to fatigue.
Cross-sectional area of fast-twitch fibers was almost twice the size of slow-twitch fibers (6,721 and 3,713 ^m2, respectively).
Although fast-twitch muscle fibers are usually larger in size than slow-twitch, slow-twitch fibers can become up to 22% larger than fast-twitch fibers with effective endurance training.
When you do strength training, though, you use fast-twitch and slow-twitch fibers.
9] The thyroarytenoid and lateral cricoarytenoid muscles have a high proportion of fast-twitch fibers that are involved in glottic sphincteric action and a low proportion of slow-twitch fibers that are involved in phonation.
Slow-twitch muscles fibers cannot produce as much force as fast-twitch fibers, which also generate a given level of force in a shorter period of time than slow-twitch fibers.