The Effect of Acute Caffeine Ingestion on Endurance Performance: A Systematic Review and Meta-Analysis.
Kyle SouthwardKay J Rutherfurd-MarkwickAjmol AliPublished in: Sports medicine (Auckland, N.Z.) (2018)
Caffeine can be used effectively as an ergogenic aid when taken in moderate doses, such as during sports when a small increase in endurance performance can lead to significant differences in placements as athletes are often separated by small margins.