Anaerobic Systems

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  • ATP-PC system
    • Very high intensity
    • 3-10 seconds of energy
      • low stores of PC
    • Short metabolic pathway
      • Only 1 reaction so energy is supplied quickly
    • ADP+ phosphate+ energy (endothermic) --> ATP
    • Coupled reaction
      • Exothermic energy used in an endothermic reaction
    • Anaerobic Systems
      • Lactic Acid System
        • Glycogen
          • Glycogen phosphorylase
            • Glucose
              • PFK
                • Energy
                • Pyruvic Acid
                  • LDH
                    • Lactic Acid
        • 10-180 secs
          • Depends on tolerance to lactic acid
            • Lactic acid build up = STOP
        • High intensity
        • E.g.
          • 400/800m
          • A C in netball reacting to a counter attack
        • Lactic Acid
          • Decrease pH of muscles
            • Inhibits enzyme activity
              • Impares muscle performance
                • Decreases performance
                • Stimulates pain receptors
        • Glucose
          • Usable form of glycogen
    • EG.
      • 100m sprint
      • sprinting to intercept ball in netball
    • Creatine Kinase breaks the bond between Phosphate-Creatine which goes to phosphate+ creatine+ energy

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