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

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

1,2,†,* , 2
 and
1
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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Abstract

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 3.0).
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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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