Originally Posted by Ben Fury
Burke and Deakin? If you're into carb loading and fear fat, they're good ones to read. They'll support that position.
If you're into hearing an alternate hypothesis; enjoy reading a few papers by SD Phinney, JS Volek, and EC Westman.
A close reading of Phinney's:
Ketogenic diets and physical performance
can be quite informative.
Thank's for posting the link. You're right it was quite informative, particularly the conclusion.......
Both observational and prospectively designed studies
support the conclusion that submaximal endurance performance
can be sustained despite the virtual exclusion of
carbohydrate from the human diet. Clearly this result
does not automatically follow the casual implementation
of dietary carbohydrate restriction, however, as careful
attention to time for keto-adaptation, mineral nutriture,
and constraint of the daily protein dose is required. Contradictory
results in the scientific literature can be
explained by the lack of attention to these lessons learned
(and for the most part now forgotten) by the cultures that
traditionally lived by hunting. Therapeutic use of
ketogenic diets should not require constraint of most
forms of physical labor or recreational activity, with the
one caveat that anaerobic (ie, weight lifting or sprint) performance
is limited by the low muscle glycogen levels
induced by a ketogenic diet, and this would strongly discourage
its use under most conditions of competitive
Soooo... let's see; "submaximal endurance performance can be sustained despite the virtual exclusion of carbohydrate from the human diet" but "anaerobic (ie, weight lifting or sprint) performance is limited by the low muscle glycogen levels induced by a ketogenic diet." right?
In other words fat is an ideal fuel if you want to go for a really long walk in a cold climate but if you want to sprint to the finish line or lift a heavy weight above your head you'd better make sure you're eating enough carbs to replenish your glycogen stores between workouts.
Thank's Ben, glad you could help clarify things.