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Transcript of Energy Systems
The energy we get comes from foods such as carbohydrates, fats and proteins which we absorb when we eat food. We also can use creatine phosphate which comes from the muscles but there is not much of it and it replenishes slowly with rest. ATP-PC System How the system works The ATP-PC system works by getting creatine phosphate(PC) and attaching it to the Adenosine Diphosphate(ADP) to create ATP. Creatine Phosphates found in the muscles but there is not much of it. Aerobic or Anaerobic The ATP-PC systems anaerobic because no oxygen is required to breakdown creatine phosphate. Duration The ATP-PC system works for a very limited amount of time, about 5-10 seconds because there is limited PC(Creatine Phosphate) Food for Fuel Phosphate creatine is not found in food its naturally produced in the muscles and that's where it is stored and made. By-products The ATP-PC system has no by-products Sporting examples The ATP-PC system is used in almost every sport but is used mostly in sports such as 100-200m sprints, high jump, long jump and a lot of other track and field sports. Which muscles fibers are recruited The fast twitch muscle fibers are recruited because they are used for high intensity movement and strength for a short period of time. Advantages and disadvantages The advantages of the ATP-PC system is that you can perform high intensity exercises without relying on oxygen whilst doing them and with no by-products.
But a disadvantage is that you can only perform these tasks for a short amount of time and that your PC stores replenish slowly, using the ATP-PC system will also end up giving you a huge oxygen debt. Latic Acid System H C 3 OH OH O How it works The Lactic acid system(Anaerobic glycolosis) works by getting the adenosine diphosphate and adding glycogen with it without using oxygen to break the glycogen down this produces ATP with a by-product of lactic acid. Duration The duration of the lactic acid system is about 2-3 minutes because after that you muscles fill with lactic acid and you start to work slower. Aerobic or Anaerobic The lactic acid system is anearobic because it uses no oxygen Food for fuel Glycogen is used for the lactic acid system which is found in all foods By-products The by-product of the lactic acid system is lactic acid Sporting examples The lactic acid system is used for high intensity exercise over a medium range of time e.g. 400m run, 800m run and almost every other sport at specific times. Which muscle fibers The lactic acid system uses fast twitch muscle fibres Advantages The advantages of the lactic acid system is that you can work at high intensity and that you can work for longer than the ATP-PC system Disadvantages The disadvantage is that anaerobic glycolosis produces lactic acid which burns your muscles and makes you slow down Aerobic system How it works The Aerobic system works by breaking down glycogen with oxygen and attaching it to ADP to create ATP Duration The Aerobic glycolosis system works for 3+ minutes Aerobic or Anaerobic Aerobic because it uses oxygen Food for fuel The aerobic glycolisis system uses food to produce glycogen By-products The by-products of aerobic glycolisis are H20(Sweat) and C02(Carbon dioxide/exhaling) Sporting examples Aerobic glycolosis is like all energy systems used in most sports but is used thoroughly in long distance running where it is sub maximal intensity but for a long time Muscles fibers used Slow twitch muscle fibers are used because they can be used for a long time at low intensity suited for the Aerobic glycolisis system Advantages and Disadvantages The advantages of the Aerobic system is that you can work for a long period of time but a disadvantage is that you can only work at sub maximal intensity and you can also find it hard to take in the oxygen required for muscles to work Energy system interplay The interplay between energy systems means that no matter what system your using you will always use all three, but you will be using one more than the other two depending on intensity and duration of the exercise your doing Time(sec) Percentage of use 10 180 60 120 30 300 600 ATP-PC Lactic acid Aerobic Key 5% 30% 90% Bibliography Amanda Telford. (2010). Aerobic and Anaerobic pathways. In: Catherine Greewood Nelson Phisical Education VCE Units 1&2. 2nd ed. Melbourne: Nelson CENGAGE. 45-59 About.com. (2013). Lactic acid chemical structure. Available: http://0.tqn.com/d/chemistry/1/0/R/K/1/lactic_acid.jpg. Last accessed 13th May 2013. By Connor Miller