Dear Wiggo said:This is my understanding.
The thing with VO2max and FTP (or lactate etc) testing is you use them together - not in isolation.
If you have an FTP test, you're unlikely to hit VO2. It can happen, but it's unlikely.
So yes, a step test or lactate test is useful because it's real world. Correct. Very true. No denying. Ferrari's lactate test + 4 hour ride + lactate test is even more real world.
But is that the best the rider can do? And how would you know?
Simples: do a VO2max test. Now you know how much oxygen they can process per kg of weight per minute.
Now compare watts at VO2max to their FTP test watts and you can determine what % of VO2max they are riding at, as well as efficiency, etc, at different points on their lactate graph.
If someone is doing 400W at FTP, that's awesome. But if they are only riding at 60% of their VO2max, you'd say - hang on this kid (probably) has room to improve. What training have they been doing, and what impact has that had, etc, etc.
Keeping in mind you can also improve your VO2max through training, EPO, etc, and it will differ, obviously, depending on fitness. The test also tends to take a very short amount of time vs step test (to exhaustion or not) or lactate test or Ferrari's 4+ hour test.
Without the VO2 max test it's closer to impossible to be able to determine if the athlete has room to improve.
So when Froome or Kerrison or Brailsford say, "Froome has room to improve" they must be basing it on something. Personally I think they are basing it on preemtpive unlikely performance explanation theatre, but regardless - in a real world situation where you have a rider and you want to know if they are hitting their genetic potential at the FTP level, a VO2 max test can help determine if that is in fact the case.
This is at the purely physiology testing level. Says nothing about recovery, tenacity, force of will, experience, team environment, diet, etc, which all play significant parts in how an athlete performs.
At the very least, you would expect they would VO2max and FTP test their riders when they join the team. Even more so if you are claiming to be more scientifically advanced and attention to detail than everyone else.
Well explained, you're pretty close to the mark. Most teams and Sports Institutes use a variation of the principles you explained (or at least they did when I was racing).
VO2 max isn't used quite as commonly as it used to be but it is still unusual for someone at Froome's level to not know it, or at least know what it was from the last time him and his coach structured/restructured his training program, as VO2% at threshold is a hugely important factor for a GT contender and is something that is easily trained if you have the physiological room for improvement.
Guys like acoggan, AlexSimmons and coachfergie are some of the leaders in this field and could inform us on the most current testing protocols. If JV is still around I'm sure he could elaborate as well.