muscle fiber characteristics

Fast Twitch Glycolytic (FG) – Diameter

Large

Fast Twitch Oxidative Glycolytic (FOG) – Diameter

Intermediate

Slow Twitch Oxidative (SO) – Diameter

Small

Fast Twitch Glycolytic (FG) – Muscle Color

White

Fast Twitch Oxidative Glycolytic (FOG) – Muscle Color

Red

Slow Twitch Oxidative (SO) – Muscle Color

Red

Fast Twitch Glycolytic (FG) – Capillarity

Sparse

Fast Twitch Oxidative Glycolytic (FOG) – Capillarity

Dense

Slow Twitch Oxidative (SO) – Capillarity

Dense

Fast Twitch Glycolytic (FG) – Myoglobin Content (oxidative capacity)

Low

Fast Twitch Oxidative Glycolytic (FOG) – Myoglobin Content (oxidative capacity)

Intermediate

Slow Twitch Oxidative (SO) – Myoglobin Content (oxidative capacity)

High

Fast Twitch Glycolytic (FG) – Glycolytic capacity

High

Fast Twitch Oxidative Glycolytic (FOG) – Glycolytic capacity

Intermediate

Slow Twitch Oxidative (SO) – Glycolytic capacity

Low

Fast Twitch Glycolytic (FG) – Speed of Contraction

Fastest

Fast Twitch Oxidative Glycolytic (FOG) – Speed of Contraction

Fast

Slow Twitch Oxidative (SO) – Speed of Contraction

Slow

Fast Twitch Glycolytic (FG) – Rate of Fatigue

Fast

Fast Twitch Oxidative Glycolytic (FOG) – Rate of Fatigue

Intermediate

Slow Twitch Oxidative (SO) – Rate of Fatigue

Slow

Fast Twitch Glycolytic (FG) – Motor Unit Size

Large

Fast Twitch Oxidative Glycolytic (FOG) – Motor Unit Size

Intermediate to Large

Slow Twitch Oxidative (SO) – Motor Unit Size

Small

Fast Twitch Glycolytic (FG) – Axon Conduction

Fast

Fast Twitch Oxidative Glycolytic (FOG) – Axon Conduction

Fast

Slow Twitch Oxidative (SO) – Axon Conduction

Slow