The break down of glucose to provide energy, through coupled reactions to resythesise ADP back into ATP.
Glucose is supplied directly from carbs or glycogen. the carbohydrated is located in the liver and muscles and are a ready fuel source.
a decrease in PC activates the enyzme glycogen phosphorylase to break down glycogen during the process glycolysis.
takes place in the sarcoplasm of muscle cells and is anaerobic.
during glycolysis the enzyme phosphoructokinase (PFK) initiates the breakdown of glucose into pyruvic acid but if there is a lack of oxygen, pyruvic acid is turned into lactic acid by the enzyme lactate dehydrogenase.
provides energy during the first 2-3mins of high intensity short duration work. if the activity is flat out the la system may only last up to 30secs
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