Effects of coffee and caffeine anhydrous on strength and sprint performance
Trexler ET, Smith-Ryan AE, Roelofs EJ, Hirsch KR, Mock MG
European journal of sport science · 39 citations
How it was studied
- Design
- Randomized controlled trial (indexed by PubMed)
- Studied in
- People
- Main outcome
- Health markers and function
Who paid for it
- Funding
- Independent funding
- Government
- National Institutes of Health
- Government
- National Center for Advancing Translational Sciences
- Government
- NCATS NIH HHS
- Grants
- National Center for Advancing Translational Sciences (1KL2TR001109); National Center for Advancing Translational Sciences (KL2TR001109)
Based on 3 listed funder(s).
Publication
- Published
- 2015-09-22 · Eur J Sport Sci · vol. 16 · issue 6 · pp. 702–710
- Publisher
- Taylor & Francis
- Cited
- 61 citations · more than 90% of similar papers · 3.1× the field average
- Impact
- Top 10% most cited in its field
- References
- 43 works
- Access
- Open access (repository copy)
- Research areas
- Coffee research and impacts · Muscle metabolism and nutrition · Exercise and Physiological Responses
- Keywords
- Sprint, Caffeine, Bench press, Animal science, Placebo, Anhydrous, Medicine, Chemistry, Physical therapy, Internal medicine, Resistance training, Biology
- MeSH
- muscle, skeletal, humans, caffeine, plant extracts, anaerobic threshold, coffee, adult, male, muscle strength, athletic performance, young adult, performance-enhancing substances
5 authors
From US
- Eric T. TrexlerUniversity of North Carolina at Chapel Hill
- Abbie E. Smith‐Ryan · correspondingUniversity of North Carolina at Chapel Hill
- Erica J. RoelofsUniversity of North Carolina at Chapel Hill
- Katie R. HirschUniversity of North Carolina at Chapel Hill
- Meredith G. MockUniversity of North Carolina at Chapel Hill
Abstract
Caffeine and coffee are widely used among active individuals to enhance performance. The purpose of the current study was to compare the effects of acute coffee (COF) and caffeine anhydrous (CAF) intake on strength and sprint performance. Fifty-four resistance-trained males completed strength testing, consisting of one-rep max (1RM) and repetitions to fatigue (RTF) at 80% of 1RM for leg press (LP) and bench press (BP). Participants then completed five, 10-second cycle ergometer sprints separated by one minute of rest. Peak power (PP) and total work (TW) were recorded for each sprint. At least 48 hours later, participants returned and ingested a beverage containing CAF (300 mg flat dose; yielding 3-5 mg/kg bodyweight), COF (8.9 g; 303 mg caffeine), or placebo (PLA; 3.8 g non-caloric flavouring) 30 minutes before testing. LP 1RM was improved more by COF than CAF (p = .04), but not PLA (p = .99). Significant interactions were not observed for BP 1RM, BP RTF, or LP RTF (p > .05). There were no sprint × treatment interactions for PP or TW (p > .05). 95% confidence intervals revealed a significant improvement in sprint 1 TW for CAF, but not COF or PLA. For PLA, significant reductions were observed in sprint 4 PP, sprint 2 TW, sprint 4 TW, and average TW; significant reductions were not observed with CAF or COF. Neither COF nor CAF improved strength outcomes more than PLA, while both groups attenuated sprint power reductions to a similar degree. Coffee and caffeine anhydrous may be considered suitable pre-exercise caffeine sources for high-intensity exercise.
Abstract via Europe PMC. Copyright remains with the authors or publisher.
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