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Anerobic glycolysis

Anerobic glycolysis is the transformation of glucose to lactate when limited amounts of oxygen (O2) are available. This is only an effective means of energy during short, intense exercise, providing energy for 30 seconds to 2 minutes. It replenishes very quickly over this period and produces 2 ATP per glucose for about 5% of glucose's energy potential. See aerobic glycolysis for longer, low intensity energy.