In today's age where many people now take different supplements to help them with exercise performance, as well as recovery, I was curious as to how caffeine effects endurance performance, as well as how it would effect human metabolism while working out.
The study I have found performed endurance tests on nine different competitive cyclists. Two being female, and seven of them being male. One endurance trial was conducted 60 minutes after the participants drank decaffeinated coffee. A second trial was conducted 60 minutes after the participants consumed regular coffee containing 330 mg of caffeine. The subjects were amazingly able to perform an average of 90.2 minutes of cycling after drinking caffeine, compared to only 75.5 minutes of cycling after only consuming the decaffeinated coffee.
In terms of metabolism, evidence was found that a greater rate of lipid metabolism during the caffeine endurance trial compared to that of the trial without any caffeine. However, carbohydrate metabolism seemed to remain consistent between both of the trials.
So it seems that caffeine is able to help increase endurance during exercise by a fairly noticeable rate. Also while doing so, it seems that caffeine can allow your body to metabolize more fat during a workout as well. I wonder however if there other downfalls to taking caffeine with athletic performance, since I feel as if you don't hear all to often of athletes consuming caffeine before sporting events and such.
http://europepmc.org/abstract/MED/723503/reload=0;jsessionid=pHfYGUj8MGup4u9IkRUt.6
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