Energy drinks work when consumed moderately
Washington: A new study has revealed that moderate consumption of energy drinks can improve people’s response time on a lab test measuring behavioral control, but those benefits disappear as people drink more of the beverage.
With the growing popularity of energy drinks such as Red Bull, Monster, Burn and RockStar, especially among high school and college students, psychologists have been studying the effects of sugary, highly caffeinated drinks on young people.
College students in particular have been using these drinks to stay awake, help them study and cut the intoxicating effects of alcohol. The latter use has sent several young people to hospital emergency rooms.
“Several aspects of cognitive performance that show improvement under the influence of caffeine are attention, reaction time, visual search, psychomotor speed, memory, vigilance and verbal reasoning,” said Cecile A. Marczinski, of Northern Kentucky University and co-author of the study.
“The results of the current study illustrate that energy drinks can increase stimulation and decrease mental fatigue, suggesting that they may be used with alcohol to counteract the sedation associated with drinking,” she added.
The study included 80 college students (34 men and 46 women) between the ages of 18 and 40.
Some were given Red Bull 7, while others were given lower amounts of caffeine added to Squirt, a lemon-flavored decaffeinated soda that looks and tastes like Red Bull. Others were given plain Squirt as a placebo.
A half-hour after finishing the drinks, participants took a computerized ‘go/no-go’ test in which they had to respond quickly to targets on a screen and were also asked how stimulated and mentally fatigued they felt after the drinks.
The students who were given Red Bull reported feeling more stimulated and less tired than the other participants, but their response rates were slower.
“This finding is of interest given that energy drinks are frequently mixed with alcohol and the acute effects of alcohol impair response inhibition,” Marczinski said.
The study is published in the December issue of the APA journal Experimental and Clinical Psychopharmacology.
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