Dr. Judy Staveley Health Bits: Proteins: How are they used in training and should I take protein before or after training? Ok. Dr. Staveley: protein contributes to less than 2% of the fuel used during exercise of less than one hour’s duration. So if you are a runner you need to more carbs. YAY for carbs! We all love CARBS! However, us American get enough carbs in diet to last us a lifetime, or we wouldnt be running to burn them off. During prolonged exercise (i.e., three to five hours’ duration - half marathon or marathon), the total contribution of protein to the fuel supply may reach 5% to 10% during the final minutes of prolonged work. Note your dietary intake for what type of training you are doing. Proteins broken down into amino acids and muscles can directly metabolize the chain of amino acids to alanine and the liver can convert alanine to glucose. So yes, it can be used as a fuel source to answer your question.
Posted on: Thu, 08 Jan 2015 16:49:39 +0000
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