Moderate
A fast-twitch fiber is______________________?
Correct answer: C. White muscle
- A. Red muscle
- B. Only A
- C. White muscle
- D. Both
Explanation
Fast-twitch fibres are commonly described as white fibres because they contain less myoglobin and rely more on anaerobic energy production. Red fibres are slow-twitch and are better suited to endurance activity.
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Practise Anatomy and Physiology for Sport
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