Rashid Goin HAMzi wrote:
http://www.letsrun.com/forum/flat_read.php?thread=4615815Can we start taking bets on a 'getting caught' timeframe for this guy?
No one took his bet three years ago, but he would have cleaned up.
Back on topic, even though it was years ago:
Renato Canova wrote:
b) when you STAY in altitude, you don't have any new stimulus, but you have ADAPTATION. This means that the number of RBC remain constant (and not very high, African have less RBC than people of sea level), but thei globular volume is bigger. And all the top African runners have a normal level of hematocrit (rarely over 45), the most part of cases lower than the level of European and American runners.
Renato, do you have any comment on the contradiction between your statement and published research?
http://www.humankinetics.com/acucustom/sitename/Documents/DocumentItem/02_J3910_Wilber_2012_0054_92-102.pdf:
There are minimal data regarding the hematological profiles of elite Kenyan and Ethiopian distance runners, and those studies are difficult to compare due to inconsistent methodology and design.
Moore et al reported a relatively high hemoglobin concentration (flow cytometry) and hematocrit in 41 elite male Kenyan distance runners who were native to the Rift Valley (2000–2500m). The mean hemoglobin concentration and hematocrit were 16.4 g/dL and 49%, respectively, and nearly 25% of these athletes had a hemoglobin concentration above 17.0 g/dL and hematocrit above 50%.
A recent investigation compared 10 elite male Kenyan distance runners (10,000-m personal best 28:29 [min:s]) who were native to Eldoret, Kenya (2100 m), and 11 elite male German distance runners (10,000-m personal best 30:39) who were sea-level natives. When measured in Kenya (Nairobi, 1660 m) approximately 12 hours after subjects had left Eldoret, hemoglobin concentration (photometric analysis) was 16.1 g/dL, which was not significantly different ( P > .05) from the German runners (15.2 g/dL). When measured at sea level (Bayreuth, Germany, 340 m) approximately 26 to 30 hours after the subjects had left Eldoret, total hemoglobin mass (CO rebreathing) was not different between the Kenyan athletes (14.2 g/ kg) and German athletes (14.0 g/kg).Similarly, there were no differences in total blood volume between the Kenyan runners (101.9 mL/kg) and German runners (99.6 mL/kg).
(A Hematocrit over 50% BTW is not normal. Cycling does not allow riders to compete with a hematocrit over 50%)