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Energy systems
 

Energy systems

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    Energy systems Energy systems Presentation Transcript

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