The Effects of Caffeinated “Energy Shots” on Time Trial Performance |
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Authors: | Matthew Mark Schubert Todd Anthony Astorino John Leal Azevedo Jr |
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Institution: | 1.Department of Kinesiology, California State University Chico, 400 W. 1st Street, Yolo Hall 243, Chico, CA 95929, USA; E-Mail: ;2.Department of Kinesiology, California State University San Marcos, 333 S. Twin Oaks Valley Road, University Hall 320, San Marcos, CA 92096, USA; E-Mail: |
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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. |
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Keywords: | time trial caffeine taurine yerba maté distance running |
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