What is the difference between slow twitch and fast twitch muscle fibres?

Slow oxidative fibres are designed for aerobic endurance exercise. They use oxygen to work at a moderate rate over a long period. They are red due to the high concentration of blood vessels which deliver a rich supply of oxygenated blood. They have a high resistance to fatigue and are found in high percentages in athletes such as marathon runners.

Fast twitch fibres are designed for anaerobic exercise. They produce small amounts of energy very quickly. Unlike slow twitch they don't use oxygen to produce energy (ATP) so do not require such a rich blood supply. This means they are white in colur not red. They fatigue much more quickly than slow twitch fibres. Athletes in high power sports such as sprinting have high percentages of fast twitch fibres.

Related Physical Education GCSE answers

All answers ▸

State two components of physical fitness that an individual would need when taking part in a 100m sprint race and describe how each component could improve her performance.


Explain 'reversibility' within the SPORT principles


Why does an increased heart rate help during endurance exercise?


What does the vertical jump test measure and how would this be suitable for a netball player?


We're here to help

contact us iconContact usWhatsapp logoMessage us on Whatsapptelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo

© MyTutorWeb Ltd 2013–2025

Terms & Conditions|Privacy Policy
Cookie Preferences