3 energy systems:
Lactic Acid System– also known as the Glycolytic System, is a system which supplies energy for intense activities or exercises which would normally last for a short period of time such as a 100m sprint race so an appropriate athlete would be Usain Bolt. Some long distance runners would need to use this system slightly at the end of a race when the athlete is at a sprint finish such as Mo Farah. This system uses anaerobic respiration which has the equation; glucose → lactic acid + energy released. This is when your muscles need to create energy quickly, so in order for this to happen, glucose is broke down to for lactic acid and the release of energy. A lot of ATP is produced at a fast rate.

Aerobic System – This is the long duration energy system. The aerobic system produces a lot more ATP than either of the other energy systems however it produces the ATP much more slowly which is why the aerobic system helps in long distance races (such as the 10,000m) as the energy is produced at a slow constant rate. Rowers would also use this system because they would not want all their energy used up at once because their body needs to consistently perform in order to last the whole race.
Phosphocreatine System – this is also known as the Phosphagen system. This releases energy at a high rate. The CP …show more content…
For example, rugby uses all 3 energy systems. A winger in rugby would use the Phosphocreatine System when complete sprints down the channel of the rugby pitch, in order to beat players. This is because the Phosphocreatine System produces energy at a rapid pace which last for about 12 seconds which is the perfect amount of time for a powerful sprint. Also generally all rugby players would benefit from the Phosphocreatine System due to the fact that hard tackles need to be made which involves fast pace movement. If a rugby player’s Phosphocreatine System is increased then harder tackles will be