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      • KCI등재

        Consumption of an "Energy Drink" does not Improve Aerobic Performance in Male Athletes

        ( Monica Umana Alvarado ),( Jose Moncada Jimenez ) 한국스포츠정책과학원(구 한국스포츠개발원) 2005 International Journal of Applied Sports Sciences Vol.17 No.2

        Energy drinks differ from sport drinks in their composition and purpose; sports drinks are consumed primarily to replenish carbohydrate and electrolytes loss during exercise, while energy drinks are used to stimulate the central nervous system in activities different than sports. The main purpose of the study was to determine if the intake of a commercially available energy drink enhanced motor performance in male athletes. A double-blind, randomized-crossover study was carried on 11 athletes who completed two 10 km cross-country races. Subjects drank 6 ml·kg-1 body mass of an energetic drink or a placebo beverage 30 min before the race. Statistical analysis included analysis of variance, repeated measures t-student, and McNemar χ2 tests on the dependent variables, urine specific gravity, ratings of perceived exertion, heart rate, gastrointestinal symptoms, and performance time. The results indicated that no significant differences were found between mean racing times; however, ratings of perceived exertion were significantly lower when participants ingested the energy drink (energy drink= 7.02 ± 1.21 vs. placebo = 8.01 ± 0.75) (p < .05). No significant associations were found between the energy drink or the placebo and gastrointestinal symptoms. Finally, no specific personality type was related to the placebo effect. In conclusion, even though athletes did not improve their racing times when consuming the energy drink, their perceived exertion was lower during the running trials.

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