Muscle
Fiber Types
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.com · slow twitch · fast twitch · myoglobin · fatigue
Slow fiber
resting
Fast fiber
resting
Fast energy
100%
state
—
Type I — slow twitch (red, oxidative)
Type IIx — fast twitch (pale, glycolytic)
mitochondria (aerobic ATP)
capillary / oxygen supply
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.com · Muscle Fiber Types