1. Effect of an Energy Drink on Physical and Cognitive Performance in Trained Cyclists
- Author
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Joowon Lee, David G. Lassiter, James Burns, Heontae Kim, John L. Ivy, Lynne Kammer, and Zhenping Ding
- Subjects
medicine.medical_specialty ,Calorie ,Placebo ,Crossover study ,Task (project management) ,chemistry.chemical_compound ,chemistry ,Exercise performance ,Physical therapy ,medicine ,Effects of sleep deprivation on cognitive performance ,Caffeine ,Psychology ,Stroop effect - Abstract
Background: Caffeine and carbohydrates are used by consumers to increase exercise and certain aspects of cognitive performance. This study investigated the effectiveness of an energy drink (ED) containing caffeine to enhance cycling time-trial performance and cognitive performance at rest, during strenuous exercise, and after exercise. Methods: The experimental protocol was a double-blind, placebo-controlled, randomized, crossover design. The treatments were ED containing caffeine (160 mg), carbohydrate (54 g), taurine, and Panax ginseng, and a caffeine-free noncaloric placebo beverage (PLA). After a 12-hour calorie and caffeine abstention, exercise performance was measured by time to finish a simulated 35-km cycling time-trial course. Cognitive performance was measured by a Stroop Test, a tapping task, a reaction time task, and an executive function task consisting of both tapping and reaction time. Participants (n=15, seven women, eight men) were grouped as low-baseline (LO) or high-baseline (HI) since ...
- Published
- 2012