I guess my effort to be more clear failed. There is a connection between the two, but they are not synonyms.Prolonged strenuous exercise in heat can cause hemoconcentration, for several reasons, one of which is dehydration.This is what I meant when some fluid is lost as sweat, but not all.It's not a dehydration argument but a hemoconcentration argument, of which dehydration can be a partial contributor.It would be exaggerated to think that dehydration was the only cause of the lost plasma, and therefore, Paula should have been suffering from severe dehydration, preventing her from speeding up the last 5K. (Seems like the opposite is possible -- that speeding up the last 5K might lead to more fluid loss at the end of the race).According to the paper, it falls back to pre-race baselines within 2 hours.A lot of discussion hinges on this 12.0 value and the 82 off-score, pre-race 2003.I agreed, and agree now, the prerace values looks low -- too low if she just finished altitude training, and could maintain it with an altitude tent.Is it anemia topped up with a blood bag? Even with all the possible pre-2009 errors, this doesn't rule out doping. It just makes it less probable until other possibilities are rule out.It's also a pre-race hemoglobin value that hasn't been reported or confirmed as far as I know. It looks like 12.0 comes from her book, but this number doesn't match with more official responses, presumably using values from actual blood reports, which says the increase in hemoglobin to 15.6 was 2.8 g/dl, with no significant change in RET%.If these values were from blood taken after 2008, under stricter conditions, I would agree, probably still not as strongly as rjm33 and pop_pop now, that these large swings look extremely suspicious. But they weren't.Blood doping as described by rjm33 is still possible, but not necessary, to explain even the large 33 point difference.
casual obsever wrote:
rekrunner wrote:1) More clearly, there is only a hemoconcentration argument. Anyone who understood dehydration simply misunderstood what was being argued. The IAAF did not argue dehydration. (Actually, I found I also used the word "dehydration" earlier, so I must retract "surely I never".)
IAAF used "dehydration" a lot. Starting with 4.14.1:
"because dehydration could cause haemoconcentration"
Ref. 62: "Hemoconcentration can be caused by dehydration associated with prolonged exercise or by posturally-induced shifts in plasma volume, and may be in the order of 10-20%')."
etc.
The point back then was that Paula's rise was much more than those mentioned 10-20%, in milder conditions. In the end, you conceded that there must have been a measurement error.
Note also that these numbers include the so-called plasma shift...