This document discusses the three energy systems - ATP/PC, lactic acid, and aerobic - that provide ATP to allow human movement. The ATP/PC system provides ATP for 2-10 seconds of high-intensity exercise like sprinting using stored ATP and phosphocreatine. The lactic acid system takes over for 10 seconds to 2 minutes of high-intensity exercise, producing ATP without oxygen and leading to lactic acid buildup. The aerobic system fuels activities from 2 minutes to hours using oxygen to break down fats and produce large amounts of ATP.

2.  ATP is the only useable form of energy in our bodies.
 When we want to move we have to use ATP.
 ATP stands for adenosine triphosphate.
 We have 2 seconds worth of ATP stores in our muscles.
Question: - BUT after these stores are used up where do we
get it from?

3.  ATP/PC system – 1st
 Lactic acid system – 2nd
 Aerobic system – 3rd

4. This is a bond. When we want
to use ATP we must break it
to produce a high amount of
energy.
+
ATP
ADP

5.  2 – 10 seconds of exercise.
 High intensity.
 Produces 1 molecule of ATP.
 Requires a lot of rest in order to
recover.
 Does need oxygen.
 Uses glycogen.
 For example Usain Bolt.

6.  10 seconds – 2 minutes.
 High intensity
 Produces 2 molecules of ATP.
 Requires a lot of recovery time.
 If used for too long lactic acid is produced.
 Does not require oxygen.
 Uses glycogen.
 For example a 400m runner.

7.  From 2 minutes up to 2 hours.
 Low intensity
 Produces 38 molecules of ATP
 Doesn’t require much recovery time.
 Requires oxygen.
 Uses fat.
 For example Mo Farah.

8. Lactic acid
system
Lactic acid
system

9.  What?
 Why?

10.  E.g
◦ ATP/PC - to kick the ball when shooting.
◦ Lactic acid – to defend well throughout a series of
attacks.
◦ Aerobic – to keep running for the whole 90 minutes of the
game.

12.  Pass = Write a paragraph on each energy system
with reference to sporting examples.
◦ Can you link these to methods of training?
 Merit = Write a detailed paragraph of each energy
system. Show how the three systems can be used
together.