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

Nutrients

Matthew Mark Schubert²  Todd Anthony Astorino¹ 

[1] Department of Kinesiology, California State University San Marcos, 333 S. Twin Oaks Valley Road, University Hall 320, San Marcos, CA 92096, USA; E-Mail:;Department of Kinesiology, California State University Chico, 400 W. 1st Street, Yolo Hall 243, Chico, CA 95929, USA; E-Mail:

关键词: time trial;    caffeine;    taurine;    yerba maté;    distance running;   

DOI  :  10.3390/nu5062062

来源: mdpi

【 摘 要 】

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.

【 授权许可】

CC BY   
© 2013 by the authors; licensee MDPI, Basel, Switzerland.