Originally Posted by
terrymorse
While you can "survive" while exercising at a low intensity without taking in carbs, athletes performing at moderate or greater intensities benefit greatly from carb ingestion. There are much data to confirm this, going back decades.
Also, 10 g/hr is well below the ACSM guideline of 30-60 g/hr for endurance exercise greater than 1 hour.
Many if not all of those studies, spanning over 100 years of literature, are covered in the above paper, and there are many other interesting bits, like the observation that ingesting carbs will lead to more glycogen depletion, which seems paradoxical.
By the way, I don't care to convince you or anybody else on this topic, nor to suggest that one is
required to not do over X amount of carbs per hour, only that it
is not necessary to do so, which are two very different things, but the article makes for an interesting read nonetheless.