1.9 Muscle Fibre Types Flashcards
1
Q
What are muscle fibres?
A
Fibres which make up voluntary (skeletal) muscle
2
Q
What are type 1 muscle fibres?
A
Slow twitch muscle fibres; suited to low intensity work
E.g. marathon running
Fibres which can be used for a long period without fatiguing
3
Q
What are type 2a muscle fibres?
A
Fast twitch muscle fibres used in anaerobic work; can be improved through endurance training to increase their resistance to fatigue
4
Q
What are type 2x muscle fibres?
A
Fast twitch muscle fibres used in anaerobic work and can generate much greater force than other fibre types, but fatigue quickly
5
Q
What is myoglobin?
A
A red pigment that transports oxygen to the muscle
