The combined effects of L-theanine and caffeine on cognitive performance and mood

  title={The combined effects of L-theanine and caffeine on cognitive performance and mood},
  author={G. N. Owen and Holly Parnell and E. D. de Bruin and J. Rycroft},
  journal={Nutritional Neuroscience},
  pages={193 - 198}
  • G. N. Owen, Holly Parnell, +1 author J. Rycroft
  • Published 2008
  • Psychology, Medicine
  • Nutritional Neuroscience
  • Abstract The aim of this study was to compare 50 mg caffeine, with and without 100 mg L-theanine, on cognition and mood in healthy volunteers. The effects of these treatments on word recognition, rapid visual information processing, critical flicker fusion threshold, attention switching and mood were compared to placebo in 27 participants. Performance was measured at baseline and again 60 min and 90 min after each treatment (separated by a 7-day washout). Caffeine improved subjective alertness… CONTINUE READING
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