Armstronglivs wrote:
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Everything that is known about doping indicates that is far from the case.
I might argue that by presenting a hypothetical example. Consider that there is a shoe with marked performance-enhancing properties that is banned but the technology involved is extremely difficult to detect. Runners who use the shoe know they will have a distinct advantage over those who don't - and they are unlikely to be caught. What do you think will be the incidence of its use at the top levels of sport? That is doping.
That hits the nail on the head. You say "everything that is known" as if there is a significant body of "knowledge" linking doping to elite performance. "Everything that that is known" about doping, and specifically the relation to elite marathon performance, would not fill a specimen bottle. And what we do know often doesn't strongly correlate doping with better elite performances.
You cannot use science that measures the wrong thing on the wrong people under the wrong conditions to suggest that doped elite performances in the marathon should be faster than non-doped elite performances. Even the scientists conducting the studies agree and typically caution against such projections.
You cannot use a handful of anecdotes, as they lack controls for a proper comparison, and are generally not blinded.
You certainly cannot use anecodotes from other events and sports.
When someone argues about lack of testing, or concedes there is a lack of data because athletes evade or hide data collection, this only confirms that we are in the realm of that which we do not know.
You cannot combine all of these together and fill a specimen bottle with the combined knowledge.
A compromise I would accept, lacking athlete specific doping data, is to look for performance trends over all time. This should be possible to observe when "1 in 2" athletes are allegedly doping, and the effect is allegedly greater than shoes. We instantly saw this trend globally with the introduction of shoes causing a noticeable drop in road racing times across the board. This is often why many people suggest Kenyans and East Africans started doping in the '90s. But recall that, while the performance evidence exists, the evidence that East Africans were doping in the '90s on such a large scale doesn't exist.
Doping shows no such performance trend in many countries known to dope. On the contrary, we often see apparent contradictions. In the specific case of the women's marathon, comparing Russian women, to the Japanese women, as two countries over all time, fails to confirm the expected prediction. Russia has been known to dope both their men and women with steroids and blood doping since the '70s, while Japan is notable for being among the least suspicious of doping, and often appearing as 0% in the few prevalence estimates available by country. Once you get past the sole example of Shobukhova, and compare country to country, over all time Russia does not outperform Japan by any metric.
If we accept that "1 in 2" championship athletes are doping, we should be able to identify performance trends in countries with a high percentage of doping busts.
Looking at performance trends in the marathon, it defies all the popular doping milestones. No improvements in the '90s, when no testing existed and testing wasn't standardised by WADA, for men and women until the very end of the decade; each time testing improves, with the first EPO test in 2000, OOC testing in 2003, improved testing in 2005, improved standards in 2007, ABP in 2009, and improved testing/enforcement in Kenya in 2017, the marathon just gets faster and faster, when you would predict it slows down.
We also saw in the Sunday Times that WC and Olympic marathon medals won over the period of 2001-2012 were "suspicious" only 1 out of 9 times -- meaning 8 out of 9 were not suspicious -- comparatively far below that of other events, and also below the global average. Here, a large database of collected blood samples could not provide evidence that blood doping was important for winning championship/Olympic medals.
All this suggests is that factors that limit elite marathon performance cannot be significantly addressed by doping.