A2 PE OCR Exercise Phys Lactic Acid system

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  • Created by: Sorcha
  • Created on: 16-02-14 11:26
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  • Lactic Acid System (anaerobic glycolysis)
    • GLYCOGEN
      • GLUCOSE
        • PYRUVIC ACID
          • LACTIC ACID
            • FATIGUE
            • an increase in LA = a decrease in muscle/blood PH therefore inhibits muscle contraction
          • lactate dehydrogenase (LDH)
            • LACTIC ACID
              • FATIGUE
              • an increase in LA = a decrease in muscle/blood PH therefore inhibits muscle contraction
        • phosphofructokinase (PFK)
          • PYRUVIC ACID
            • lactate dehydrogenase (LDH)
        • glycogen phosphrylase (GPP)
          • GLUCOSE
            • phosphofructokinase (PFK)
            • 2 ATP
          • ADVS: fast acting, lasts longer that ATP-PC, more ATP produced, no O2, Large glycogen store in muscles
          • DISADVS: Lactic acid produced = poison = lowers Ph = denatures enzymes = effects processes = lower skill level = FATIGUE
          • EFFECTS OF TRAINING: increased tolerance to LA, increased stores of glycogen, delayed OBLA.
            • use anaerobic system, overload the LA energy system
            • can work at a higher intensity for a longer duration.

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