Effects of a multi-nutrient supplement on exercise performance and hormonal responses to resistance exercise.

What Was Tested

Researchers studied the intervention named in the title in this randomized controlled trial publication.

The purpose of this study was to determine the influence of a comprehensive multi-component nutritional supplement on performance, hormonal, and metabolic responses to an acute bout of resistance exercise.

Why It Was Studied

Subjects then reported to the laboratory, ingested the corresponding supplement, and performed two consecutive days of heavy resistance exercise testing with associated blood draws.

Who Took Part

By PubMed's age tags, the people studied were adults, men only.

How the Study Was Run

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

Because people in this 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 study, the assignments were hidden from both participants and investigators until the end.

A placebo (an inactive look-alike) gave the intervention group a baseline to be compared against.

In the crossover set-up each of the participants took both the intervention named in the title and the comparison in turn, acting as their own control.

What Was Measured

Subjects then reported to the laboratory, ingested the corresponding supplement, and performed two consecutive days of heavy resistance exercise testing with associated blood draws.

Topics PubMed links to this paper include Amino Acids, Biomarkers, Blood Glucose, Body Composition, Creatine Kinase, Diet and Dietary Supplements.

What This Means in Plain Language

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

The publication is from 2007 (European journal of applied physiology), a journal based in Germany.

More context: all human trials.