Two stars for the Paleo Diet but Zero stars for the "modifications."
I was severely disappointed with this book. I hoped that an athlete would adopt the diet and adapt his training to the demands of the sound science that Dr. Cordain authored with his Paleo Diet. Instead, we have an athlete who has basically adapted the Paleo Diet to the high carbohydrate nonsense that permeates the "endurance world", which leads to good results, but bad health. How many of our great athletes have to continue sacrificing their long-term health for short term goals?
Recovery is not a good enough reason to "adapt" and modify the diet. The goal of training is to race, not more training. I don't think enough athletes understand that. There is a large section in this book about overtraining, but the authors "overcome" this seeming limitation ironically with the very thing that the Paleo Diet attempts to cure us from - - a misplaced reliance on excessive glucose which is responsible for the majority of the maladies that currently afflict us.
"Periodization" is also a problem. I'll leave you this quote by Olympian Gordon Pirie which accurately details the issue:
"Another popular aspect of training which I think is very dangerous is that known as "periodization" - that is, breaking down the training year into various "phases", each of which is divorced from the others. Thus, the beginning of the year may be devoted to a slow distance "build-up", the second portion of the year devoted to hill training, a third part devoted to interval work and then speed training, and finally (though most of these runners never get this far) a racing season undertaken. The difficulty with training in this manner is that you go along quite well with one aspect of training (e.g. long distance running), and then suddenly, on a certain day, "Bang!". You start hill-bounding, or speed-training, or something new, and the body simply is not ready for the change, and invariably, year in and year out, you are more often than not injured. The body should be trained in all aspects of running, all of the time. Only the emphasis should change as you progress through the year; no aspect of training should be entirely given up for any significant length of time. The balance between different types of training (distance running, intervals, hill running and speed training) should be adjusted as the year progresses" Pirie, "Running Fast and Injury Free", Page 86.
This balance can be achieved with adequate rest. When an athlete gives up his dependance on sugar, he will find that he has much more strength and steady energy reserves. Sure, you don't recover as quickly, but this is an indication that training is too hard, and one needs to adjust this training in order to successfully make it to the starting line. The science by Phinney and others clearly demonstrates that athletes, when given sufficient time to adapt to fat burning, were able to repeat their athletic performance. Frequency was a problem, but again, the goal of training is to race, not more training.
I'm disappointed that Dr. Cordain could not find an athlete willing to test his theories with sound and intelligent training, rather than the usual carb-load glucose-laden mess we've been stuck with. There are many low carb runners and cyclists out there who address the issues covered in this book far more intelligently and in a way that does not compromise their long term health as this approach potentially does.
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