I love this article
some keen folks are catching on and trying to spread the good word. In May of 2006,
and their article is form 2016 but never theless a fun section to read.
Lactate… The Math, The Myth, The Legend
Jennifer Herbold June 22, 2016Cycling, Exercise and Fitness, Facts vs. Misbeliefs
Chances are, you’ve been thinking about this all wrong. You may have first heard about it from a trusty high school coach, explaining why your legs burned at the end of a really hard sprint. Or perhaps you read about it in a popular book or magazine. But no matter how it was added to your knowledge base, you now need to unlearn it… and re-learn the correct concept.
The concept of “lactic acid burn” during intense exercise has been debunked for nearly 40 years, however, the notion refuses to extinguish itself from common ideology. The belief still blazes hot, but thankfully, some keen folks are catching on and trying to spread the good word. In May of 2006, the New York Times published an article on the use of lactate as a fuel (even though they still mistakenly called it “lactic acid”… at least they were moving in the right direction). Even VeloNews has caught up with the correct science, publishing an article in 2014 on the original nature of the bad idea, admitting to how we have been speaking about it in error for too long of a time. With the proper scientific know-how bequeathed to me by an excellent graduate mentor (who wrote his doctoral dissertation on lactate metabolism), I got Gu Energy Labs to remove it from their product marketing after consulting their R&D department. Ironically, their researchers studied under the man himself who figured it all out in the 1980’s, Dr. George Brooks at the University of California, Berkeley (here is a link to his 1985 article on the topic).
The work ethic and self-realization required by all of us to unlearn and re-learn what we thought we knew is mentally tough, that is a fact. It’s human to accept and hold onto things that confirm our biases and identities. But why wouldn’t you want to be equipped with the truth, and why is that so difficult to accept?
Why the confusion in the first place? Leave it to Louis Pasteur, the famed French microbiologist responsible for developing anthrax and rabies vaccines, as well as the bacteria-killing pasteurization process for boozie drinks and milk. While conducting research involving yeast and alcohol production in 1857, he discovered that yeast converted sugar into lactic acid when oxygen was not present. To piggyback on the idea that production of lactic acid resulted from non-aerobic sugar metabolism, German biochemist Otto Meyerhof and physiologist A.V. Hill, both Nobel Prize winners, produced theories relating blood oxygen status and oxygen debt to lactic acid production. Their research concluded that as exercise intensity increased to a point where working muscle was becoming oxygen deprived (delivery could not meet demand), “lactic acid” accumulation in the blood would simultaneously increase. And because of this, until the 1980’s, we believed this tiny little carbohydrate was a worthless byproduct… and an athlete’s worse nightmare.
BUT… basic chemistry proves them wrong (yes, it’s simple math).
Yeast and humans. You can’t feasibly put a square peg in a round hole without some legitimate manipulation. Both yeast and humans are living things, but not the same when it comes to sugar metabolism. They are not like Jenny and Forest – they are not like peas and carrots.
Now even more fun is that we where able to develop 20 + ideas on how to find a magical point by using a time lag sensitive product to create training ideas and zones. and even more fun that w e than create d ideas that this magical LT is the same as a potential VT.
A simple experiment may help to make the decision that VT and LT are not the same even if they are sometimes close .
Deload the body from glucose and load it and check the change in LT curve with the change in VT reaction.