Compare And Contrast Fast Twitch Fibres

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Slow twitch fibres, called type l are relatively slow in generating peak force, fast twitch fibres (type ll) are about 10 times faster. Type l is adapted for slow rhythmical contractions but can also generate quick forces. Slow twitch fibres are smaller in size and produce less overall force than fast twitch fibres and they are more energy efficient, producing more force for the same energy input, so are used for aerobic activities such as the marathon, in contrast, fast twitch fibres are easily fatigued. Fast twitch fibres have poor aerobic endurance and are better suited to anaerobic activity such as 100m sprint. Fast twitch fibres also have a larger diameter than slow twitch fibres because they have more myosin filaments in them and it
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