Does caffeine help athletic performance? Two studies offer conflicting findings.
The latest issue of the Journal of Caffeine Research offers two studies on the effects of caffeine on physical activities. One study (http://bit.ly/uogAQs) looks at how runners performed after consuming caffeine and the other (http://bit.ly/smWXiT, abstract only )considered whether caffeine provides bicyclists with a boost.
At the University of Memphis, researchers split 12 runners into three groups. One consumed caffeine by itself an hour before running 10 kilometers; another consumed caffeine in combination with a chemical known as 1,3-Dimethylamylamine, commonly used by athletes as an energy booster. The third group took a placebo. The researchers say neither the caffeine nor 1,3-Dimethylamylamine appeared to have any effect on the runners’ times.
But another study by researchers at California State UniversitySan Marcos and Tufts University, tested caffeine’s effects on bicyclists. Some consumed caffeine and others a placebo. Those who had caffeine increased their baseline performance on a 10-kilometer bike ride by 0.3 percent to 2 percent.
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