Rosenbloom, C. (June, 2003). High protein diets don't deliver for athletes. GSSI Sports Science News. [https://www.gssiweb.com/reflib/refs/607/highprotein.cfm?pid=96]

Some sports persons consider protein to be the most important nutrient for building and maintaining muscles and therefore, advocate the avoidance of carbohydrates and an emphasis on protein.

Carbohydrates and proteins perform different dietary and physiological roles. One should not be substituted for the other.

• Carbohydrate yields the most efficient energy for work and is the only fuel for anaerobic work. Virtually every athletic pursuit depends upon an adequate supply of carbohydrate. Most "good" sources of carbohydrates are also accompanied by other nutrients, such as vitamins and minerals.
• Excess calories, whether from carbohydrate, protein, or fat cause weight gain.
• High glycemic index foods promote quicker recovery than low glycemic index foods.

Protein is the building block for making hormones, enzymes, and blood cells. It aids in tissue repair and the maintenance of a healthy immune system.

• Protein is not critical for fueling working muscles. It can be a source of energy supply when carbohydrate is in short supply.
• Athletes only need a moderate elevation in protein supply when compared to sedentary individuals. Those needs are easily met by normal foods in adequate amounts.
• Protein, when paired with carbohydrate, helps build muscle mass before and after exercise; it is a good post-exercise snack that stimulates muscle fiber hypertrophy.

Implication. Protein and carbohydrate are essential components of an athlete's diet. When consumed from the "right" sources and in adequate amounts, the athletic body's needs will be met.

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