Interesting comments by JV on Froome, but some things he missed:
1) Porte was nearly as fast as Froome up Madone, so if Froome is an absolute, never-seen-before freak, with > 90 V02max, 90% lactate threshold, 23-24% efficiency, so is Porte. If the odds that Froome is are miniscule, what are the odds that both are?
2) This is why I posted earlier that his recorded time does not jibe with the wattage figure he claimed, unless he was timed from > 13 km from the top (or there was a ferocious headwind). But if he was, he not only beat the times of LA and other known dopers, but did it giving them in effect more than a 1 km head start. I continue to be amazed that these discrepancies get ignored after the defending TDF champion publicly reveals his time and wattage.
3) By “adaptive” physiology, I think JV is referring to the distinction—which I discussed earlier on the Ullrich thread, and still earlier on another thread discussing the book The Sports Gene—between inherent or genetic endowment to perform untrained, and the genetic endowment to improve upon training. It’s thought that an athlete can be very endowed in one respect, and not in the other, and JV provides himself as an example of someone endowed in the first respect but not the other.
If I understand JV correctly, he’s saying that Froome is exceptional in the second aspect. Thus his V02max was not initially that high naturally, but became very high after training. This is how he explains the fact that someone with the exceptional physiology suggested in point 1 could have a mediocre career for several years.
The problem with this view is that it doesn’t explain the suddenness of Froome’s transformation. He was mediocre right up to the 2011 Vuelta—shown in particularly clear detail by ScienceisCool’s analysis of his ITT’s before and after this date--at which point he suddenly became the best GT rider on the planet. Individuals with exceptional adaptive physiology simply don’t improve that much that fast. We have discussed here the other explanation for this, schistosomiasis, and I’m not going to reiterate all the flaws in using that as an explanation.
4) Beyond these problems, here is the question or set of questions I have for JV: If Froome were one of your riders, would you (unlike Sky):
a) Attempt to obtain his power data pre-Vuelta, so you could compare them with current data and get some idea of what occurred during the transformation?
b) measure his V02 max, lactate threshold and efficiency, so you could estimate for yourself what watts/kg value he might be capable of?
c) Publically reveal any of the information in a) and b)?
d) Address the question of why Froome continues to maintain that he has suffered from schisto off and on, and was treated for it for several times, when most doctors familiar with the disease, including two who posted here last summer, say that a single treatment almost always eliminates all the worms, and with minimal side effects? The eggs can be a continuing problem in some cases, but there is no treatment for them, at least, the treatment for worms does not affect them.
e) Address the question of how the disease could have affected Froome’s performance, yet not affected his blood passport (according to Vayer, I think it was, who was allowed to examine it)? The worms themselves do not significantly reduce the red blood cell population, but antigens released from the eggs can inactivate hemoglobin, resulting in a decrease in hemoglobin/hematocrit that ought to be picked up by the passport if the disease is serious enough to affect performance. There are also problems with iron metabolism, which would also be expected to affect the passport to the extent that they affect performance.
With respect to the last two points, please understand I'm not expecting you, JV, to know everything about this disease, but am only asking if you would be more transparent, and more consistent, than Sky in addressing these issues.