Pires, Flavio O Caffeine and Placebo Improved Maximal Exercise Performance Despite Unchanged Motor Cortex Activation and Greater Prefrontal Cortex Deoxygenation. [electronic resource] - Frontiers in physiology 2018 - 1144 p. digital Publication Type: Journal Article ISSN: 1664-042X Standard No.: 10.3389/fphys.2018.01144 doi