Effects of two doses of glucose and a caffeine-glucose combination on cognitive performance and mood during multi-tasking.
Bottom Line: This study assessed the effects of two doses of glucose and a caffeine-glucose combination on mood and performance of an ecologically valid, computerised multi-tasking platform.The caffeine-glucose group had significantly better total multi-tasking scores than the placebo or 60 g glucose groups and were significantly faster at mental arithmetic tasks than either glucose drink group.There were no significant treatment effects on mood.
Affiliation: Centre for Human Psychopharmacology, Swinburne University, Melbourne, VIC, Australia.Show MeSH
Related in: MedlinePlus
Mentions: There was a significant time × condition interaction for blood glucose levels [F(6, 292) = 20.68, p < 0.001]. Blood glucose levels did not differ at baseline [F(3, 146) = 0.91, p = 0.438]. There were significant group differences at both at the 30-min (pre-task) [F(3, 146) = 25.48, p < 0.001] and 60-min (post-task) [F(3, 146) = 27.21, p < 0.001] time points. Pairwise comparisons revealed that all measures were significantly higher than placebo at both post-baseline time points (p < 0.005) and that the 25 g drink was associated with lower blood glucose levels than the caffeine–glucose drink at the pre-task measure (p = 0.038) and both the 60 g drink and the caffeine–glucose drink at the post-test measure (p < 0.005 in both cases). These data are plotted in Figure 2 (upper panel).
Affiliation: Centre for Human Psychopharmacology, Swinburne University, Melbourne, VIC, Australia.