I was reading the following article http://www.medbio.info/...olism_march_2007.htm about work and energy in muscles and it got me to thinking... Why not measure for blood glucose levels instead of lactic acid? If the human body starts to pull energy from bodily fluids when glucose stores are depleted during anaerobic work then why not use blood glucose measurements to determine if the endurance athlete is working aerobically or anaerobically? Wouldn't you then be able to set thresholds based off of blood glycogen depletion instead of LT production?

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Ready or not here I come!
Coaching NY's Southern Tier
Swift^3