I started about two weeks ago with Paleo not to lose weight, but to improve my cycling performance. My primary goal is to improve time trialing. These are (in my case) mostly between 8km and 30km. (Under 45 minutes).
Furthermore in the winter I do some cyclocross. A typical contest is around an hour or so.
I am typically interested in a more efficient use of energy within my muscles. Paleo seems a good way to achieve this.
However, After one week the diet results were not too good. At 10km I lost about 30 seconds, and that's a lot! After some calorie counting I found that I was getting too little calories (about 500kcal short/day) Cause found... I guess this will improve if I'll eat somewhat more
The FAQ at http://www.thepaleodiet.com/ came up with this:
The two primary sources of this fat are 1) fat stores directly within muscle called "intra-muscular triglycerides" (IMT), and 2) free fatty acids in your bloodstream whose source is from stored fat in adipose (fat) tissue. When the typical western, high carbohydrate diet (bread, rice, potatoes, refined sugars etc) is consumed the muscles adapt to this diet by storing more carbohydrate within muscle cells as glycogen, and simultaneously storing less IMT. Additionally, high carbohydrate diets tend to reduce the enzymes that allow fat stores to be broken down and utilized during exercise. As your body becomes more and more accustomed to a reduced carbohydrate intake, both IMT stores will increase along with increased efficiency of stored fat breakdown. Thirdly, liver, blood and muscle glucose stores will be more actively conserved. The net effect of all of these changes will be to keep your blood sugar levels within normal ranges during exercise. </blockquote>
And that sounds a little scary to me... Muscle glycogen is an important factor for riding at maximum. If that will be less available it will probably have an effect on my performance. Maybe I will lose more performance by the glycogen than win by the increase of IMT.
Anyone here on the forum can shine some light on this?