Effects of ingesting a pre-workout dietary supplement with and without synephrine for 8 weeks on training adaptations in resistance-trained males.

What Was Tested

Researchers studied Copper (Supplement) in this randomized controlled trial publication.

The purpose of this study was to examine whether ingesting a pre-workout dietary supplement (PWS) with and without synephrine (S) during training affects training responses in resistance-trained males.

Why It Was Studied

This trial (NCT02999581) was retrospectively registered on December 16th 2016.

Who Took Part

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

Participants donated a fasting blood sample and had body composition (DXA), resting heart rate and blood pressure, cognitive function (Stroop Test), readiness to perform, bench and leg press 1 RM, and Wingate anaerobic capacity assessments determined a 0, 4, and 8-weeks of standardized training.

How the Study Was Run

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

Random assignment meant chance, not the researchers, decided who got Copper (Supplement) and who got the comparison, which limits bias.

Blinding on both sides kept the participants and researchers unaware of who received Copper (Supplement).

The comparison arm used a placebo, so changes seen with Copper (Supplement) could be set against what happens without it.

Data were analyzed by MANOVA with repeated measures.

Blood chemistry data were also analyzed using Chi-square analysis.

What Was Measured

PubMed files the paper under topics including Dietary Supplements, Physical Endurance, Resistance Training, Sports Nutritional Physiological Phenomena, Synephrine and beta-Alanine.

The authors tagged it with the keywords Body composition, Cognitive function, Ergogenic aids, Exercise performance, Multi-ingredient supplement and Safety.

What This Means in Plain Language

The paper is a randomized, double-blind and placebo-controlled study of Copper (Supplement).

Its findings take up roughly 6 sentences of the abstract and are left out here on purpose; the source paper is the place to read them.

The publication is from 2017 (Journal of the International Society of Sports Nutrition), a journal based in United States.

More context: the Copper (Supplement) compound page, all human trials.