slow twitch and fast twitch muscle fibres

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Skeletal Muscles are made of slow twitch and fast twitch muscle fibres


Skeletal muscles are made up of two types of muscle fibres – slow twitch and fast twitch. Different muscles have different proportions of slow and fast twitch fibres. The two types have different properties:


Slow-twitch muscle fibres

  1. Fibres contract slowly.
  2. Muscles you use for posture e.g. those in the back, have a high proportion of them.
  3. Good for endurance activities, e.g. maintaining posture, long-distance running.


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