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Old 04-01-2013, 05:54 AM   #7
Junior LCF Member
Join Date: Mar 2013
Posts: 6
Gallery: sdpierce
I dunno. Some of this isn't jiving with what I'm reading in "The Art and Science of Low Carbohydrate Performance. However, I did send all of my references off to a nutritionist for verification.

Another source states:

Metabolically, high-volume training makes sense. There are two main sources of fuel for exercise: carbohydrates and fats. The energy supply from carbohydrate and fat is inversely related. High rates of carbohydrate use reduce combustion of fat. Carbohydrates are used preferentially at very high efforts, such as a 5K race, or at low fitness levels when fat metabolism is underdeveloped.

Conversely, when you teach your body to rely on fat for fuel, your combustion of carbohydrates goes down, thus "sparing" carbohydrates. This benefits performance in endurance events. You become very fatigued when you run too low on carbohydrates. We store only a very limited amount of carbohydrate (glycogen) in our bodies. Compare this with a relatively unlimited supply of fat. Even an athlete with only 6 percent body fat will have enough fat to fuel exercise lasting for many hours. When you use more fat, you generate more energy and your carbohydrate supply lasts longer.

Follow the principle of specificity. If you want to teach your body to use more fat for fuel, then create training conditions that generate high fat metabolism. Your body will eventually learn to prefer fat.
I'll put "Gary Taubes" on my To-Read list. Thanks for the recommendation.
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