Effects of amino acids supplement on physiological adaptations to resistance training.

What Was Tested

The paper reports a study of Amino Acids, published as a randomized controlled trial.

Who Took Part

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

Seventeen healthy men (mean body mass: 77.9 +/- 7.2 kg; mean height: 174.3 +/- 12.4 cm; mean age: 22.9 +/- 3.8 yr) were matched and randomized into two groups and performed 12 wk of periodized heavy resistance training while supplementing with either MA or an isocaloric, isonitrogenous placebo (CON).

How the Study Was Run

The design is described as randomized, double-blind and placebo-controlled.

Because people in this Amino Acids study were split into groups at random, differences between the groups are less likely to reflect who happened to join each one.

As a double-blind Amino Acids study, the assignments were hidden from both participants and investigators until the end.

The comparison arm used a placebo, so changes seen with Amino Acids could be set against what happens without it.

Every 2 wk during the 12-wk intervention, resting blood draws were obtained, and muscle strength and power were measured.

In addition, blood draws were obtained before, during, and after a standardized resistance exercise challenge performed pre-, mid-, and posttraining.

What Was Measured

Topics PubMed links to this paper include Adaptation, Physiological, Amino Acids, Dietary Supplements, Muscle Strength and Resistance Training.

What This Means in Plain Language

The paper is a randomized, double-blind and placebo-controlled study of Amino Acids.

The abstract goes on to report its results in about 5 sentences; this page does not restate them, so read the paper for the findings and their limits.

The publication is from 2009 (Medicine and science in sports and exercise), a journal based in United States.

More context: all human trials.