This is the latest version of this eprint.

Abstract

In the current study pupillary oscillations were measured in order to provide a physiological indication of the effects of Quick Energy™ (Viva Beverages) on alertness. In a within-participants balanced placebo design, twenty-two participants completed the 11-minute Pupillographic Sleepiness Test (PST) following consumption of Quick Energy™ (59ml, orange flavor; mixed with a 250ml of orange cordial/water solution) or placebo (250ml of orange cordial/water solution). Self-rated measures of mood (VAMS: Bond and Lader, 1974) and sleepiness (SSS: Hoddes et al., 1973) were taken at three testing epochs: baseline, 15-minutes following drink consumption (i.e. immediately pre-PST), and immediately post-PST. The PST was found to significantly increase pupillary unrest (i.e. increase daytime sleepiness), increase self-rated sleepiness, and decrease self-rated alertness. For the PST, the interaction between experimental stage (baseline and test) and drug condition approached significance (p=0.07), providing some evidence that Quick Energy™ moderated the rise in daytime sleepiness. However, physiological measures were not mirrored subjectively, wherein Quick Energy™ had no effects on self-rated sleepiness, alertness, contentedness, and calmness.

Available Versions of this Item

• The effects of Quick Energy™ on daytime sleepiness and mood. (deposited 24 Apr 2012 14:31) [Currently Displayed]