One of the problems with studies like these (or perhaps it is just a problem with the article) is that they don't tell you what the runners ate during the race itself. I've read a lot about carb loading and race nutrition in general. In most cases, the benefits of carb loading disappear if runners consume supplemental nutrition as they run. The disadvantage of carb loading is that (if done properly) you go into the race several pounds heavier. Those pounds matter in a long run.
If you are an elite or competitive runner who is going to finish in under 3 hours, carb loading can be an advantage because it allows you to avoid eating (or try to eat) on the run, or at least not have to eat much. If you are finishing in over 4 hours, you need to eat and carb loading is less of a deal breaker (if it matters at all).
Edited by: LIVE2RUN4LIFE at: 10/31/2012 (11:30)
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