Research Article

Adrenergic System Activation Mediates Changes in Cardiovascular and Psychomotoric Reactions in Young Individuals after Red Bull© Energy Drink Consumption

Table 2

Scores achieved on tested cognitive tasks.

Cognitive functionTaskBefore Red BullAfter Red Bull value

Immediate memoryAVLT- (1-) first trial8,17 ± 1,777,79 ± 2,040,426
ADST-forward8,03 ± 0,828,48 ± 0,87*0,029
Delayed recallAVLT-delayed recall12,58 ± 2,1813,00 ± 1,930,231
Working memoryADST-backwards6,45 ± 0,836,86 ± 1,03*0,048
Delayed verbal memoryAVLT-late recall12,55 ± 1,9712,03 ± 3,150,459
Verbal fluencySemantic task23,28 ± 3,8926,10 ± 4,94*<0,001
Ideational task15,07 ± 4,0018,66 ± 4,43*<0,001
Phonemic task30,70 ± 7,3141,76 ± 9,71*<0,001
Attention
d2 test TN-E486,83 ± 69,19592,45 ± 60,31*<0,001
d2 test MC267,90 ± 27,90283,21 ± 21,89*<0,001

Results are expressed as mean ± SD.
AVLT: auditory verbal learning test; ADST: auditory digit span task; TN-E: quantitative measure defined by total number of processed data minus number of total errors; MC: mean concentration.
* (statistically significant values are in bold) before Red Bull versus after Red Bull ().