What is the predominant energy system used during high intensity, short duration activity lasting up to 3 seconds?
The main energy system during high intensity, short duration work lasting up to 3 seconds is the ATP-PC system. This is an anaerobic energy system which uses phosphocreatine as its fuel source. PC (phosphocreatine) is broken down by creatine kinase to form a phosphate molecule, creatine and energy. This energy is used to resynthesise ATP from ADP and P, to allow for muscle contraction to occur.
HB
Answered by Harvey B. • Physical Education tutor
4503 Views
See similar Physical Education A Level tutorsRelated Physical Education A Level answers
All answers ▸Explain (using a sport of your choice) which physiological aids would be most beneficial to a performer.
Outline the process of muscle contraction.
What are the predominant energy systems used by a 400m runner?
How do the arm muscles work to flex the elbow?