interesting article thanks for the link
question for TGJB: since dirt tracks have changed a great deal in the last 40 years, could not turf horses be used as the control group? it would seem that less changes have been made to the turf over the last 40 years, than to the dirt. so if the turf horses are faster, it would support the conclusion that horses have gotten faster; if they are slower, it would support the conclusion that they have gotten slower; but if turf horses are neither faster, nor slower, it would support the conclusion that the difference in times is an aberration, and that horses are the same as they were 40 years ago.
the author didn\'t notice it, but the comparison between spitz and phelps, actually bolsters the idea that current horse race times, might not be a function of talent at all:
some of the increasing speed in swimming is the result of improved training and finessing of technique (though no current swimmer has better technique than spitz did); but much of the non-pharmaceutically achieved increases these days is due to the fact that to be competitive at the elite level, you have to be 6\'4 or taller.
taller swimmers have the same advantage moving through the water as longer keeled boats. the longer the keel, the faster the boat. mark spitz at 6\' would be between 4-6 inches shorter than most of his competitors, if he were racing today.
compare his world record time in the freestyle in 1972 of 51.22 seconds, to the current world record holder, alain bernard\'s time of 47.50--bernard is 6\'5.\" sptiz\'s time, adjusted for height, is still rated as olympic class; but a swimmer of bernard\'s height, swimming the same time as spitz, is only rated as all american level (of course, if spitz were swimming today, he wouldn\'t be fast enough to be olympic level, but not because swimmers like bernard are better (or \"faster\") than he was; but because they are taller, so they move through the water more efficiently--their increased speed is a function of physics, not a function of talent)(which mirrors the question about horse performances in the article--is it talent, or physics?). (the difference between spitz\'s time still only being olympic level, and not world record level, when adjusted for height, is probably a function of doping, and not talent either).
you can play with height to time in swimming here:
http://www.swimmingpotential.com/custom.htmlhere\'s an article taking about how body size impacts performance in a variety of sports:
http://www.nytimes.com/2007/09/27/health/nutrition/27Best.html?_r=0the decreasing heights of distance runners over the same period of time has had the same effect in running, as increasing height has had on swimmers. just as the ever decreasing height of female gymnasts allowed for more and more dare-devil feats, at least until the advent of wide spread steroid and testosterone use from the mid 1990s on, made them too heavy to allow them to maintain the technique required to achieve what gymnasts in the 1980s did (probably no one here is interested in watching a youtube video of gymnasts mounting the balance beam, but this youtube montage of the greatest female gymnasts of all time (from about 1978-1992) is incredible
http://www.youtube.com/watch?v=y-ZdyIsk2k4this is esp. true in comparison to the 2012 olympics--it\'s nice to know that sometimes doping doesn\'t result in improved outcomes...it\'s rare though...(what\'s crazy though is that they changed the scoring, so that a non-doped gymnast of the caliber of the girls in the video, would receive no pints for ther virtuosity--the cynic in me, can\'t help think this is just another example of a sport federation maintaining and promoting and coddling its doping culture, to the detriment of clean athetes...)
all that being said--the constant breaking of world records in almost every sport owes a lot to doping. swimming is just as dirty as cycling...it\'s just better at keeping its underbelly hidden.
if horses are faster today, but have slower times due to track surface, are they only able to maintain the times they do because of doping--i.e. not matching the best times of the 70\'s but still within the margin of the winning times of the 70s? if they weren\'t doped what would the times these days look like?
if they are slower today, what use is doping, other than to force unsound horses into as many races as possible before they break down?
i still believe that the greatest benefit of doping in horses, just as it is in humans, is in allowing naturally crap horses to be competitive with naturally elite horses (which would have profound effects on the quality of the horses being bred and foaled). without doping, maybe the auxiliary gate in the ky derby would never be needed...
sorry for such a long post