Energy systems ⚡️

• ATP

  Adenosine tri-phosphate

  stored in muscles and depletes

  Energy contained in food eaten provides the energy required for the contraction of muscles through atp breakdown in muscle fibres
• 3 energy systems

  ATP-PC

  Lactic Acid

  Aerobic
• ATP-PC

  • No oxygen
  • High intensity, short duration 10 seconds
  • at first ATP stored in muscles is released from muscle contractions but then runs out, so then creatine phosphate is broken down into creatine and phosphate to release energy to rebuild ATP
• Lactic Acid System


  No oxygen

  High intensity 10 - 90 sec
• Lactic acids energy source


  Uses carbohydrates from foods for manufacturing ATP

  carbs are converted into glycogen to re-synthesise ATP

  breakdown of glycogen without oxygen produced lactic acid
• Lactic Acid


  toxic in large amount

  causes pain and discomfort "heavy Legs"

  DOMS - Delayed Onset Muscle Soreness
• Aerobic energyy system

  Requires Oxygen

  Submaximal long duration

  Slow supply of energy
• Aerobic energy source


  Carbohydrates are body's preferred fuel, but can also be fuelled by fats

  fats provide more energy than carbs but need more oxygen
• High GI

  Carbohydrates that break down quickly during digestion have a higher glycemic index
• ATP

  
• Anaerobic 


  Short duration and doesn't require oxygen

  ATP-PC system and Lactic acid system