HMS, BM EQ-Bank 145

Compare the by-products and recovery rates of the ATP-PCr and Lactic Acid energy systems. (4 marks)

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Sample Answer

ATP-PCr system produces creatine and phosphate as by-products which do not cause fatigue
Recovery is rapid with 70% restored in 30 seconds and full recovery in 2-3 minutes
Lactic acid system produces lactic acid as a by-product which causes muscular fatigue
Recovery takes longer, requiring 1 hour to remove 95% of accumulated lactic acid

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Sample Answer

ATP-PCr system produces creatine and phosphate as by-products which do not cause fatigue
Recovery is rapid with 70% restored in 30 seconds and full recovery in 2-3 minutes
Lactic acid system produces lactic acid as a by-product which causes muscular fatigue
Recovery takes longer, requiring 1 hour to remove 95% of accumulated lactic acid