Once again rekrunner, you are wrong.......The answer to your question about how would we respond to an exercise physiology textbook and an Ashenden study both stating that losses of plasma volume are in the order of 10 to 20% is that..... I respond by saying I totally AGREE with the exercise physiology textbook and Ashenden study.......what a big surprise!!!....... You don't understand the difference between changes in plasma volume and changes in hemoglobin values! They are NOT THE SAME THING!!! .........You don't understand the difference, do you rekrunner??????..........sorry about that..........................
Let me explain it to you how it works :
Hematocrit is the percentage of Red Blood Cells(RBCs) of the total blood volume or..... %RBCs divided by total blood volume.
Total blood volume is made up of RBCs and plasma, so a hematocrit of 45% is 45% RBCs and 55% plasma.
Hemoglobin is the iron containing protein which carries oxygen and is located in the RBCs, so hematocrit and hemoglobin levels will increase and decrease by the same amount in percentage change terms, so with a 10 percent change in RBCs as measured by hematocrit there will be a 10 percent change in hemoglobin value along with it.
Now get your calculator out........ A typical runner has a total blood volume of about 6.0 Liters.
so let's use our typical hematocrit score example of 45% to calculate the amount of RBCS, which is 0.45 x 6.0L equals 2.7L of RBCs and 0.55 x 6.0L equals 3.3L of plasma making up the total blood volume of 6.0Liters.
Now let's go with the highest number from the textbook and Ashenden study of 20% for the loss of plasma volume due to prolonged running and dehydration. So the 3.3L of plasma is decreased by 20%(0.66L) to 2.64L
Note that ONLY the plasma level has changed, not the RBCs, which remain the same at 2.7L.
Now the total blood volume has decreased to 2.7L of RBCs with 2.64L of plasma for a total blood volume of 5.34L. It has decreased from 6.0L to 5.34L from the loss of plasma volume.
The hematocrit, which is the %RBCs of total blood volume, is now 2.7L of RBCs divided by 5.34L of total blood volume, which gives a result of 0.5056179, which is a hematocrit value 50.56179%
So with a 20% loss of plasma volume from prolonged running and dehydration, the hematocrit has increased from 45% to 50.56179%, which is an increase of only 12.36% in hematocrit value. A 20 % loss of plasma volume would also lead to a similar 12.36% increase in hemoglobin values from prolonged running and dehydration......NOT a 20% increase in hemoglobin values. See how changes in hematocrit and hemoglobin values are MUCH LESS and DIFFERENT than changes in plasma volume. They are DIFFERENT, while you have been trying to say they are the same, which is WRONG!!!!.........
Paula had a hemoglobin (or hematocrit) increase of 30%, which if you can do math, in our example leads to an increase of hematocrit from 45% to 58.5%( a 30% increase),with the RBC value still staying the same at 2.7L; this would mean that her plasma volume would have had to decrease from 3.3 L to 1.915L,( for a total blood volume of 2.7L RBCs plus 1.915L plasma equals 4.615L of total blood volume, so 2.7L of RBCs divided by 4.615L of total blood volume equals a hematocrit of 58.5% ) ....this decrease of plasma volume from 3.3L to 1.915L is a decrease of plasma volume of 41.97%!!!!!!! to explain Paula's change in hemoglobin value increase of 30%. So she won the 1 hour and 7 minute half marathon WC race with a plasma volume loss of over 41%( and remember she had an anemic hemoglobin level at the same time!)......WOW!!!....... THAT IS SOME MASSIVE DEHYDRATION and OVER 41% LOSS OF PLASMA VOLUME IN ONLY 1 HOUR AND 7 MINUTES OF RUNNING WHILE WINNING THE WC 1/2 MARATHON RACE!!!! ....Go Paula!!!!.......She is once again SUPERWOMAN!!!!!!.......
So you can see that an implied 41.97% plasma volume loss by Paula is over 100% MORE than the maximum number of 20% plasma volume loss in the exercise physiology textbook or the Ashenden study, and that I agree with the textbook and Ashenden study.......Isn't that strange we would all agree?
See how I have shown you and everyone reading this how to calculate hematocrit and hemoglobin changes, and blood volume changes , and plasma volume changes .....all off the top of my head.........with just a calculator...........NO TEXTBOOK REQUIRED......or ASHENDEN STUDY REQUIRED........Do you know why I don't need them?........because I have already read BOTH of them!!!.....a long time ago.....
See how you are WRONG AGAIN!!!!.......sorry rekrunner........I suggest you go back to your LAB ERROR explanation that you and Paula (with the once again superhuman blood test results) and the IAAF and Dr. Saugy are all so fond of ..........while I wait for Dr. Martial Saugy to be arrested and put in jail................with the rest of his corrupt pals..........
Go Paula!!!!!.... Go Lord Coe!!!.......Go Dr. Plan B Saugy!!... Go rekrunner!!!...Go trolls with poor reading comprehension who don't know the difference between plasma volume changes and hemoglobin changes!!!!!!!!.........You should go to the physiology textbook and Michael Ashenden study that you quote from...and try to understand what they actually state......instead of trying to distort the truth so that it can somehow fit into your distorted pro-Paula world view...........
Are we having fun yet rekrunner?......Hey, what is that sound I just heard???....... I think it might be the sound of your explanations for Paula's blood results being destroyed in the distance..........just like the 67 Russian samples that Dr. Plan B Saugy destroyed for the IAAF.........