Thank you very much for your reply, Scott Johnston!
Sorry for my delay, I needed access to my computer to answer.
As I understood Sebastian Weber & Dan Lorang, the targeted Vlamax for triathletes (and probably mountaineers) should be around 0.2, while UCI world class sprinters have a Vlamax of 0.8. Vlamax is very dependent on muscle fibre type distribution but can be changed with the right training. See: https://www.elementtrainingsystems.com/blog-1/2020/7/15/understanding-vlamax
I read the Vo2max section in the books, and I totally agree. But as a read through the articles the last couple of days, I got the impression that speed / power at threshold (which is the most important driver for performance) is function of VO2MAX.
So you can increase performance at threshold by two separate things:
a) increasing VO2MAX, given the LT as % of Vo2max remains the same, increases speed / power (point B0 in the attached graph)
b) Reducing Vlamax yields to direct increase of LT, since you accumulate lactate at higher speed / power (point A1)
When my understand is faulty here, I’m sorry. I saw the graph attached somewhere but couldn’t find it anymore. For a general reference, see this link to the above mentioned: https://scientifictriathlon.com/tts169/#tab-con-21
Here they say that polarized training might be a problem when you have a very high Vlamax:
Polarised training Q&A and Mikael’s perspectives part 2 | EP#185
You should instead do more Z3 & ME instead of Z4 because Z3 lowers Vlamax (LT+) and Z4 (and strength & sprint training) increases Vlamax (LT-): https://scientifictriathlon.com/tts169/#tab-con-1
So regarding to these sources, we should by all means avoid Z4 & sprint & strength training when we talk about immediate pre-event preparation for endurance sports (probably different for shorter / more intense events like vertical k).
Where do I miss the link here?
Best regards,
Dada
Other relevant source:
Training talk with Sebastian Zeller | EP#259
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