Effects Of Caffeine On Cognitive Performance

Effects Of Different Doses Of Caffeine On Cognitive Performance In Healthy Physically Active Individuals

Caffeine is a potent central nervous system stimulant that increases the activity in the prefrontal cortex and can improve cognitive skills. An improvement in these cognitive skills can lead to further benefits in athletic performance. Therefore, it is necessary to clarify the dose-response of caffeine on cognitive performance.The aim of this research will be to determine the effects of different doses of caffeine on sport-related cognitive aspects.

The investigators will require healthy, physically active young adults to complete three trials under the conditions: a) placebo, b) 3 mg/kg, or c) 6 mg/kg body mass of caffeine. In each trial, different cognitive abilities will be assessed using the following test batteries: reaction time (DynavisionTM D2), anticipation (Bassin Anticipation Timer), sustained attention (Go/No-Go and Eriksen Flanker Test) and memory tests. In addition, side effects and the perceived sensation index will be recorded 24 h after each test.

Inclusion Criteria:

• Physically active individuals ( >150 min/week moderate physical activity or >75 min/week vigorous physical activity)
• Individuals without serious and undiagnosed health problems.

Exclusion Criteria:

• Individuals with color blindness.
• Regular caffeine consumers (>3 cups of coffee/day).