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Nutrients 2013, 5(6), 2062-2075; doi:10.3390/nu5062062

The Effects of Caffeinated “Energy Shots” on Time Trial Performance

1,2,†,* , 2
1 Department of Kinesiology, California State University Chico, 400 W. 1st Street, Yolo Hall 243, Chico, CA 95929, USA 2 Department of Kinesiology, California State University San Marcos, 333 S. Twin Oaks Valley Road, University Hall 320, San Marcos, CA 92096, USA Current Address: School of Public Health, Griffith University, Gold Coast Campus, Queensland 4222, Australia.
* Author to whom correspondence should be addressed.
Received: 26 March 2013 / Revised: 22 May 2013 / Accepted: 27 May 2013 / Published: 6 June 2013
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An emerging trend in sports nutrition is the consumption of energy drinks and “energy shots”. Energy shots may prove to be a viable pre-competition supplement for runners. Six male runners (mean ± SD age and VO2max: 22.5 ± 1.8 years and 69.1 ± 5.7 mL·kg−1·min−1) completed three trials [placebo (PLA; 0 mg caffeine), Guayakí Yerba Maté Organic Energy Shot™ (YM; 140 mg caffeine), or Red Bull Energy Shot™ (RB; 80 mg caffeine)]. Treatments were ingested following a randomized, placebo-controlled crossover design. Participants ran a five kilometer time trial on a treadmill. No differences (p > 0.05) in performance were detected with RB (17.55 ± 1.01 min) or YM ingestion (17.86 ± 1.59 min) compared to placebo (17.44 ± 1.25 min). Overall, energy shot ingestion did not improve time-trial running performance in trained runners.
Keywords: time trial; caffeine; taurine; yerba maté; distance running time trial; caffeine; taurine; yerba maté; distance running
This is an open access article distributed under the Creative Commons Attribution License (CC BY) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Schubert, M.M.; Astorino, T.A.; Jr., J.L.A. The Effects of Caffeinated “Energy Shots” on Time Trial Performance. Nutrients 2013, 5, 2062-2075.

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