Caffeine Takes Fast Runs Farther
Numerous studies have shown that caffeine consumption has a beneficial effect on athletic performance. New research published in the International Journal of Sport Nutrition and Exercise Metabolism tests the world’s most popular stimulant on super-maximal runs to fatigue.
After an exercise test to determine exercise capacity, 18 recreationally active men ran to exhaustion at 115% intensity. Some got 6 mg of caffeine per kg of body weight an hour before this run while other got a placebo. Caffeine increased time to exhaustion by about 11% (130 seconds). Scientists theorized this was due to its effect on metabolic pathways.