What have the laboratory studies of endurance on stationary bicycles found regarding caffeine consumption?
A) Caffeine can significantly improve work output at doses of 300-500 mg
B) Caffeine can double endurance at 80 mg, the amount in a can of Red Bull
C) Caffeine does not appear to improve performance
D) Caffeine does not work as well as it did in studies of marathon runners

Question

Quizplus · Accepted Answer

Caffeine has been shown to significantly improve work output and endurance in various studies, with noticeable effects at doses ranging from 300-500 mg. This is attributed to caffeine's ability to enhance fat utilization, spare glycogen, and possibly affect the central nervous system, leading to reduced perception of effort.

What Have the Laboratory Studies of Endurance on Stationary Bicycles