Protein (PRO) plays several important roles in the athlete’s body but unlike
carbohydrates and fat, protein is not a primary energy source. Protein’s job is
to build and maintain muscle mass and to help regulate metabolism. These
functions are by no means less important than energy production, but since
the body does not store protein efficiently, it is needed in smaller amounts than
the other macronutrients.
Amino acids are the building blocks of proteins. There are twenty unique amino acids that combine in various ways to form the proteins that the body requires. Nine of these amino acids are dubbed “essential” meaning they must
be obtained from the diet. The remaining 11 amino acids are “nonessential”
meaning they can be produced by the body. Under certain circumstances, the
body’s demand for some of these nonessential amino acids is too great and
more is needed from the diet, these are referred to as “conditionally essential.” Of the amino acids, leucine, isoleucine, and valine (also referred to as the
branched-chain amino acids related most significantly to muscle tissue.)
carbohydrates and fat, protein is not a primary energy source. Protein’s job is
to build and maintain muscle mass and to help regulate metabolism. These
functions are by no means less important than energy production, but since
the body does not store protein efficiently, it is needed in smaller amounts than
the other macronutrients.
Amino acids are the building blocks of proteins. There are twenty unique amino acids that combine in various ways to form the proteins that the body requires. Nine of these amino acids are dubbed “essential” meaning they must
be obtained from the diet. The remaining 11 amino acids are “nonessential”
meaning they can be produced by the body. Under certain circumstances, the
body’s demand for some of these nonessential amino acids is too great and
more is needed from the diet, these are referred to as “conditionally essential.” Of the amino acids, leucine, isoleucine, and valine (also referred to as the
branched-chain amino acids related most significantly to muscle tissue.)
| Essential Amino Acids | Nonessential Amino Acid |
| Histidine | Alanine |
| Isoleucine (BCAA) | Arginine* |
| Leucine (BCAA) | Aspartic Acid |
| Lysine | |
| Methionine | Cysteine* |
| Phenyalanine | Glutamic Acid |
| Threonine | Glutamine* |
| Tryptophan | Glycine* |
| Valine (BCAA) | Proline* |
| Proline* | |
| Tyrosine |
SORRY,this is typing mistake.Tyrosine is non essential amino acid
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