A few years ago, researchers in Spain combed through the results of more than 7,000 urine samples tested for doping at competitions in various Olympic sports. Overall, 76 percent of the samples contained caffeine, with the highest concentrations found in cycling, track and field, and rowing. Frankly, I’m surprised that the number wasn’t higher, given how effective caffeine is as a performance booster and how widespread coffee consumption is more generally.
But I’m conflating two different things. Coffee, as a new review paper in the Journal of International Society of Sports Nutrition points out, is not just liquid caffeine. I’ve written many, many articles about research into caffeine’s performance-boosting powers, almost all of which uses pills to provide a carefully controlled dose of caffeine. In contrast, many of my running friends swear by their pre-workout or pre-race coffee. The new review, from a group of researchers led by Lonnie Lowery of Walsh University, asks whether coffee—“a complex matrix of hundreds of compounds”—provides the same athletic benefits as an equivalent dose of caffeine,…
