Failure of commercial oral amino acid supplements to increase serum growth hormone concentrations in male body-builders.

What Was Tested

The paper reports a study of Exogenous HGH, sermorelin & older GHRPs (why they're passed over), published as a randomized controlled trial.

The aim of this study was to determine the acute effect that amino acid supplements have on serum growth hormone (GH) concentration.

Why It Was Studied

Amino acids are commonly ingested as ergogenic acids in the belief that they enhance protein synthesis and stimulate growth hormone release.

Seven male body-builders reported to the laboratory on four occasions after an 8-hr fast and ingested, in random order, either a placebo, a 2.4-g arginine/lysine supplement, a 1.85-g ornithine/tyrosine supplement, or a 20-g BovrilR drink.

Who Took Part

The age groups tagged for this paper are adults, men only.

How the Study Was Run

The researchers set it up as a randomized and placebo-controlled study.

The participants were allocated by chance, so the Exogenous HGH, sermorelin & older GHRPs (why they're passed over) group and the comparison group should start out alike.

A placebo (an inactive look-alike) gave the Exogenous HGH, sermorelin & older GHRPs (why they're passed over) group a baseline to be compared against.

What Was Measured

The subject headings attached to it are Amino Acids, Growth Hormone and Weight Lifting.

What This Means in Plain Language

The paper is a randomized and placebo-controlled study of Exogenous HGH, sermorelin & older GHRPs (why they're passed over).

The publication is from 1993 (International journal of sport nutrition), a journal based in United States.

More context: the Exogenous HGH, sermorelin & older GHRPs (why they're passed over) compound page, all human trials.