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

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

1,2,†,* email, 2email and 1email
Received: 26 March 2013; in revised form: 22 May 2013 / Accepted: 27 May 2013 / Published: 6 June 2013
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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
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MDPI and ACS Style

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.

AMA Style

Schubert MM, Astorino TA, Jr. JLA. The Effects of Caffeinated “Energy Shots” on Time Trial Performance. Nutrients. 2013; 5(6):2062-2075.

Chicago/Turabian Style

Schubert, Matthew M.; Astorino, Todd A.; Jr., John L.A. 2013. "The Effects of Caffeinated “Energy Shots” on Time Trial Performance." Nutrients 5, no. 6: 2062-2075.

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