I haven't seen the full journal article yet, I'll keep you posted. I'm curious to learn the percentages of enhanced performance and decreased lactate accumulation. Also, I'm curious to see if the authors indicate a translation to human application.
From the International Journal of Sports Medicine
"Caffeine and Taurine Enhance Endurance Performance"
T. F. Imagawa, et al.
Caffeine enhances endurance performance; however, its effect on accumulated lactate remains unclear. Conversely, taurine, which also enhances endurance performance, decreases accumulated lactate. In this study, the effect of combination of caffeine and taurine on endurance performance was assessed. Mice ran on a treadmill, and the accumulated lactate was measured. In addition, muscle fibers from the gastrocnemius muscle of the mice were stained with ATPase and analyzed. The use of caffeine and taurine over a 2 week period enhanced endurance performance. Moreover, taurine significantly decreased the accumulated concentration of lactate over long running distances. However, the diameter of the cross-sections and ratios of Types I, IIA, and IIB muscle fibers were not affected.
PS...Caffeine and Taurine are ingredients in popular energy drinks.