Effect on fast/slow-twitch muscle fibres (HSC SSCE Personal Development and Physical Education): Flashcards
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Practise the cards
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What are fast-twitch muscle fibres used for?
What are fast-twitch muscle fibres used for?
They are used for quick, strong actions but tire quickly.
What do slow-twitch muscle fibres excel in?
What do slow-twitch muscle fibres excel in?
They excel in endurance and can work for long periods.
How does myoglobin content differ in muscle fibres?
How does myoglobin content differ in muscle fibres?
Slow-twitch has high myoglobin; fast-twitch has low.
What is the capillary supply in slow-twitch fibres?
What is the capillary supply in slow-twitch fibres?
Slow-twitch fibres have a rich capillary supply.
What is the contraction speed of fast-twitch fibres?
What is the contraction speed of fast-twitch fibres?
Fast-twitch fibres contract quickly and powerfully.
What type of training builds slow-twitch fibres?
What type of training builds slow-twitch fibres?
Endurance training builds slow-twitch muscle fibres.
What does HIIT training improve in muscle fibres?
What does HIIT training improve in muscle fibres?
HIIT increases power and size in fast-twitch fibres.
What role do capillaries play in muscle function?
What role do capillaries play in muscle function?
More capillaries improve oxygen delivery and waste removal.
How does strength training affect fast-twitch fibres?
How does strength training affect fast-twitch fibres?
It increases size and boosts enzymes for quick energy.
What is the main function of mitochondria in muscles?
What is the main function of mitochondria in muscles?
Mitochondria are essential for energy and endurance.