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Re: Article on drinking too much during exercise [Slowman]
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first, it seems to me that a lot of noakes' writings are born of the work he's done at races, that is, he performs his "study" at ironman south africa, or comrades, or some sort of ultra ultra distance triathlon. is this what you mean, andy, when you say he hasn't conducted a single experimental study, that the studies about which noakes writes are often just a grouping of 20, or 200, or 2000, "anecdotes" collected an athletic event? does this explain the difference in the views expressed on this thread regarding "literature," that noakes' "literature" consists of these sorts of "field tests," plus his manifestos on hydration protocols, and these are not considered in the same class as that which would be conducted in a lab setting?

I don't think I would characterize them as anecdotal...he does check labs, he does weigh the athletes, etc. However, such studies are not necessarily at the level of a highly controlled, laboratory investigations. I very much agree with his observations regarding weight gain, overdrinking, and hyponatremia. However, as Andy pointed out, this observation does not support his contention that dehydration is the best strategy.

Regarding the electrolyte issue, I'm not aware of any studies that have indicated that electrolyte supplementation improved performance, or significantly impacted plasma electrolyte concentrations during exercise. (Most studies I am aware of that showed performance benefit included carbohydrates in the replacement beverage, and I would argue this is where the benefit came from.) This does not mean electrolyte supplementation is unimportant, only that I am unaware of data on that point. Andy, do you know of anything off the top of your head? Pubmed came up dry for me.

Dr. Philip Skiba
Scientific Training for Endurance Athletes now available on Amazon!
Last edited by: Philbert: Jun 20, 07 7:45

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  • Post edited by Philbert (Dawson Saddle) on Jun 20, 07 7:45