Information de reference pour ce titreAccession Number: | 00124278-200907000-00031.
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Author: | Candow, Darren G 1; Kleisinger, Amanda K 1; Grenier, Stephanie 2; Dorsch, Kim D 1
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Institution: | (1)Faculty of Kinesiology and Health Studies, University of Regina, Regina, Saskatchewan, Canada; and (2)School of Human Kinetics, Laurentian University, Sudbury, Ontario, Canada
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Title: | |
Source: | Journal of Strength & Conditioning Research. 23(4):1271-1275, July 2009.
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Abstract: | Candow, DG, Kleisinger, AK, Grenier, S, and Dorsch, KD. Effect of sugar-free Red Bull energy drink on high-intensity run time-to-exhaustion in young adults. J Strength Cond Res 23(4): 1271-1275, 2009-Consuming sugar-free Red Bull energy drink before exercise has become increasingly popular among exercising individuals. The main purported active ingredient in sugar-free Red Bull is caffeine, which has been shown to increase aerobic exercise performance. The purpose of this study was to determine the effects of sugar-free Red Bull energy drink on high-intensity run time-to-exhaustion in young adults. Physically active university students (n = 17, 9 men, 8 woman; 21 +/- 4 years, 73.4 +/- 3.1 kg, 175.1 +/- 3.2 cm) participated in a double-blind, crossover, repeated-measures study where they were randomized to supplement with sugar-free Red Bull (2 mg[middle dot]kg-1 body mass caffeine or ~147 mg caffeine; 4 kcal/250 mL) and noncaffeinated, sugar-free placebo (lemon-lime flavored soft drink, tonic water, lime juice; 4 kcal/250 mL) separated by 7 days. Exercise capacity was assessed by a run time-to-exhaustion test at 80% [latin capital V with dot above]o2max, perceived exertion was assessed immediately after exercise, and blood lactate was measured before and after exercise. There were no differences in run time-to-exhaustion (Red Bull: 12.6 +/- 3.8 minutes, placebo: 11.8 +/- 3.4 minutes), perceived exertion (Red Bull: 17.1 +/- 2.0, placebo: 16.6 +/- 1.8), or blood lactate between groups. In conclusion, sugar-free Red Bull energy drink did not influence high-intensity run time-to-exhaustion in young adults.
(C) 2009 National Strength and Conditioning Association
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Author Keywords: | caffeine; ergogenic aids; athletes.
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Language: | English.
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Document Type: | Original Research.
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Journal Subset: | Clinical Medicine. Health Professions.
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ISSN: | 1064-8011
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NLM Journal Code: | 9415084
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DOI Number: | https://dx.doi.org/10.1519/JSC.0...- ouverture dans une nouvelle fenêtre
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