Sunday, August 31, 2008

Fat and Protein Both Provide Energy

"Both lipids (fat) and amino acids (protein)have been shown to serve as significant energy sources during long runs. Estimates of protein use during exercise suggest that as much as 9% of the total energy expended during a marathon race may be derived from amino acids. Some of the amino acids like alanine may be used by the liver to form glucose- (muscle) does not have the capacity to burn amino acids directly." -Inside Running: Basics of Sports Physiology, David Costill, PhD

MY COMMENTS: I am digging through Costill's old book for some golden running "tidbits"

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