The research tested how to use caffeine to obtain the best results in sports performance. It was conducted across a range of sports and found that even small doses of caffeine (1.5 mg/kg) could improve the performance, according to Sophie Killer, a doctoral researcher in exercise metabolism and performance nutrition at Loughborough University.
In endurance exercise it was shown that caffeine improved the ability to exercise for a prolonged period of time. In high intensity sports such as swimming or rowing, lasting between 1-60 minutes, performance also improved with the use of caffeine.
Although team sports were harder to test, caffeine was believed to help when fatigue was a limiting factor. Even the strength-based sports could benefit from caffeine use, but only if there was an endurance component.
Coffee on the run
Contrary to the traditional view, the research showed that caffeine did not have to be taken before exercise.