Re. the validity of lactate testing in general: The best predictor of performance is performance itself.

Re. various approaches for determining training intensities based on measuring blood lactate: it doesn't really matter, *as long as you know what you're doing*.

Lactate Balance Point was developed by Juerg Feldmann IIRC back in 2009 or so, he later de-bunks his own method:

" 'There's nothing so useless as a bad theory': Leonid Brezhnev."

So here where we stand for now.
LBP or lactate balance point was a great step for us in the understanding on lactate trends and the possible connections to the origin of stimulation metabolic shifts .
Wrong conclusions moved us to the idea, that we can use LBP for definition of training intensities.The problem here is the same as we have with any lactate based training intensity definition.
So LBP is not a very great tool to find training intensities or zones.
It changes depending on quite a few factors we where not able to understand at the time but now can see and measure as we have the tools available..
So LBP is out for us and of little value in our assessments.
What we still can use is lactate as a bio marker to find metabolic shifts.
The metabolic shifts can caused by different reasons and this is the actual reason , why we see LBP does not work in a assessment.
So you can use lactate trends in workouts as well we will use for the next few month lactate trends to see, whether the metabolic shifts can easily be found noninvasive by combining many more physiological information's . The problem of lactate as well is the lag of respond and many values are a picture of a previous intensity.
The very interesting part now is to overcome our own ideas and replace them with facts , instead of trying to defend our theory.
The beauty is for the moment to go through our old scripts and presentations and get a smile on the face , when I read, how we tried to understand and defend our own theory and how it looked great at the time.
So it is fun to rewrite the ideas and having a critical backup from two members in the family , Andri working in Switzerland and Martina back from UVIC and UBC with a fresh and critical approach. Than using the different ideas practically on people we tested since years and see, what is different and how we approach the new challanges.
The setup of a new system for Data collection will dramatically speed up our search for new ideas and possible nicer information.


Maurice

Well there you go.

If you're really, really bored :-)

http://www.fact-canada.com/...essages/13/6837.html

Maurice