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Muscle fibre types.
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- 1213
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- Tue Oct 21 2003

... Laura Cwiklinski January 2002 Portfolio Piece Muscle Fibre Types There are three different types of muscle fibre found within the body. Each has a specific set of characteristics that determine the type of activity that a person will be much more able and capable of performing. The three types of muscle found within the body are: -Slow oxidative fibres (SO) -Fast oxidative glycolytic fibres (FOG) -Fast glycolytic fibres (FG) Every muscle contains all three types but not in equal proportions. You will only find one fibre in any one given motor unit. Type 1: Slow Oxidative Fibres The nerve impulse travels slowly to the muscle fibre because the myelin sheath is thin. Slow twitch fibres do not produce as much force as fast twitch fibres. They can however, have high levels of endurance. Slow twitch fibres are far more suited to aerobic work. They contain mitochondria and myoglobin, and have













