Muscle fibre comparison

Characteristics Slow Oxidative Fast oxidative glycolytic (F.O.G.) Fast twitch glycolytic (F.T.G.)
Fibres per motor neurone 10-180 300-800 300-800
Motor neurone size Small Large Large
Speed of contraction (ms) Slow (110) Fast (50) Fast (50)
Force of contraction Low High High
Size Smaller Large Large
Fatigue resistance Fatigue resistant Less resistant Easily fatigued
Aerobic capacity High Medium Low
Capillary density High High Low
Mitochondrial density High Lower Low
Myoglobin content High Lower Low
Anaerobic capacity Low High Very high
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