I wasn't aware the body has changed since the last millennium. You apparently do not understand what is being discussed. I suggest you try to understand the concepts being discussed before disparaging them. It has nothing to do with estimating some sort of threshold though that can be done very easily. It is much more complicated than that. It is trying to measure what causes a threshold or what is behind any measured number metabolically.

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Jerry Cosgrove

Sports Resource Group
http://www.lactate.com
https://twitter.com/@LactatedotCom