Energy systems


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Energy systems

  1. 1. Lloyd Dean Energy Systems
  2. 2. Aims <ul><li>By the end of the lesson you should be able to: </li></ul><ul><li>Describe the role of ATP in transferring energy </li></ul><ul><li>Explain the ATP – PC system </li></ul><ul><li>List the characteristics of the Anaerobic glycolysis system </li></ul><ul><li>Highlight the key points involved within the oxidative energy system </li></ul>
  3. 3. I have an embarrassing story to tell <ul><li>New TV </li></ul><ul><li>Monopoly money </li></ul><ul><li>Wrong currency! </li></ul><ul><li>Embarrassment! </li></ul><ul><li>ATP is the currency for your body </li></ul>
  4. 4. ATP – The Energy We Need <ul><li>What is ATP? </li></ul><ul><li>Adenosine Tri-phosphate (3 lots of phosphate with adenosine) </li></ul><ul><ul><ul><li>A – P – P – P </li></ul></ul></ul><ul><li>How do we get energy from ATP? </li></ul><ul><ul><li>By breaking off one of the high energy </li></ul></ul><ul><ul><li>bonds </li></ul></ul><ul><li>This leaves us with ADP </li></ul><ul><ul><li>Adenosine Di-Phosphate (2 lots of </li></ul></ul><ul><ul><li>Phosphate with adenosine) </li></ul></ul><ul><ul><li>A – P – P </li></ul></ul><ul><li>ADP then replenishes back to ATP </li></ul><ul><ul><li>This process in constantly happens in order to provide energy </li></ul></ul>
  5. 6. Energy Systems <ul><li>Your body makes ATP available for muscle contraction through 3 main energy systems </li></ul><ul><li>The energy system used depends on the intensity and duration of the activity </li></ul><ul><ul><li>ATP – PC OR Phosphagen System </li></ul></ul><ul><ul><li>Anaerobic Glycolysis OR Lactic Acid System </li></ul></ul><ul><ul><li>Aerobic System OR Oxidative System </li></ul></ul>
  6. 7. ATP – PC System <ul><li>Also known as phosphagen system (PCr= Phosphocreatine) </li></ul><ul><li>PCr broken down which releases a phosphate </li></ul><ul><li>Attaches with ADP to form ATP </li></ul><ul><li>Active at start of all activities regardless of intensity </li></ul><ul><li>Stored in small amounts </li></ul><ul><li>Cannot be used for long duration activities (Up to 6 seconds) </li></ul><ul><li>Carbohydrates are only macro-nutrient used without oxygen </li></ul><ul><li>Positives Vs. Negatives? </li></ul>
  7. 8. Anaerobic Glycolysis <ul><li>Also known as lactate acid system </li></ul><ul><li>Occurs after PCr system is depleted. </li></ul><ul><li>Breakdown of carbohydrate (Either glycogen stored in muscle or glucose in blood) to generate ATP </li></ul><ul><li>The by product of this is lactate acid and hydrogen ions </li></ul><ul><ul><li>Increase of hydrogen ions is associated with fatigue (Peaks 5 minutes after exercise has stopped, hence the sick feeling after!) </li></ul></ul><ul><li>Not as fast as ATP-PC system but can generate more ATP </li></ul><ul><li>30 – 120 seconds of work </li></ul>
  8. 9. Aerobic System <ul><li>Also known as oxidative system </li></ul><ul><li>Primary source of ATP at rest and during low intensity exercise </li></ul><ul><ul><li>At rest – 70% fats & 30 carbohydrates </li></ul></ul><ul><ul><li>During high intensity aerobic work up to 100% of ATP can come from carbohydrates </li></ul></ul><ul><ul><li>During steady state (20 minutes or more) exercise can shift towards more fats than carbohydrate for main supply of ATP </li></ul></ul><ul><ul><li>Intensity will determine value </li></ul></ul><ul><li>“ Fat” burning zone </li></ul><ul><li>Large amounts of ATP supplied </li></ul><ul><li>Not as fast as Anaerobic glycolysis but can provide more ATP </li></ul><ul><li>3 minute – 2 hours + </li></ul>
  9. 12. 1 = Highest 5 = Lowest Duration Intensity Primary System Used Work to Rest Ratio (Training) Rate of ATP Production Capacity of ATP Production 0 – 6 seconds Extremely High Phosphagen 1:12 – 1:20 1 5 6 – 30 seconds Very High Phosphagen and Fast Glycolysis 2 4 30 seconds – 2 minutes High Fast Glycolysis 1:3 – 1:5 3 3 2 – 3 minutes Moderate Fast Glycolysis and Oxidative 4 2 3 minutes + Low Oxidative 1:1 – 1: 3 5 1
  10. 13. Articulate <ul><li>With study buddy define the words without saying what it is! </li></ul><ul><li>Energy </li></ul><ul><li>Lactic Acid System </li></ul><ul><li>100 meters (relate to energy system as example) </li></ul><ul><li>ADP </li></ul><ul><li>Javelin (relate to energy system as example) </li></ul><ul><li>ATP – PC </li></ul><ul><li>ATP </li></ul><ul><li>Aerobic energy system </li></ul>