Methods of enhancing muscle growth in a human are disclosed. The method comprises administering to the human a pharmaceutically effective amount of a composition or supplement formulation comprising at least one constituent selected from the group consisting of a nitrate, a nitrite, and both. In some aspects, the composition further comprises at least one constituent amino acid.

Methods of enhancing muscle growth in a human are disclosed. The method comprises administering to the human a pharmaceutically effective amount of a composition or supplement formulation comprising at least one constituent selected from the group consisting of a nitrate, a nitrite, and both. In some aspects, the composition further comprises at least one constituent amino acid.