The Effects of Caffeine, Taurine, or Caffeine-Taurine Coingestion on Repeat-Sprint Cycling Performance and Physiological Responses
Warnock R, Jeffries O, Patterson S, Waldron M
International journal of sports physiology and performance · 32 citations
Review labels
Neutral facts our review recorded about how this study was done. They describe method, never whether we like the result.
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
- Funding not disclosed
Publication
- Published
- 2017-03-24 · Int J Sports Physiol Perform · vol. 12 · issue 10 · pp. 1341–1347
- Publisher
- Human Kinetics
- Cited
- 64 citations · more than 95% of similar papers · 4.4× the field average
- Impact
- Top 10% most cited in its field
- References
- 32 works
- Access
- Free to read
- Research areas
- Coffee research and impacts · Aldose Reductase and Taurine · Pharmacology and Obesity Treatment
- Keywords
- Sprint, Taurine, Caffeine, Heart rate, Crossover study, Cycling, Anaerobic exercise, Blood pressure, Animal science, Placebo, Wingate test, Time trial, Medicine, Internal medicine, Chemistry, Endocrinology, Physical therapy, Biology, Biochemistry
- MeSH
- humans, taurine, caffeine, exercise test, cross-over studies, single-blind method, ergometry, blood pressure, heart rate, bicycling, athletic performance, physical exertion, young adult
4 authors
From GB, AU
- Rory WarnockSt Mary's University Twickenham London
- Owen JeffriesSt Mary's University Twickenham London
- Stephen David PattersonSt Mary's University Twickenham London
- Mark Waldron · correspondingUniversity of Technology Sydney; St Mary's University Twickenham London; University of New England
Abstract
Purpose
To investigate the effects of caffeine (C), taurine (T), caffeine and taurine coingestion (C +T), or placebo (P) on repeated Wingate cycling performance and associated physiological responses.
Methods
Seven male team-sport players participated in a randomized, single-blind, crossover study, where they completed 3 Wingate tests, each separated by 2 min, an hour after ingesting: C (5 mg/kg body mass [BM]), T (50 mg/kg BM), C +T (5 mg/kg BM + 50 mg/kg BM), or P (5 mg/kg BM) in a gelatin capsule. Performance was measured on an ergometer, and blood lactate, perceived exertion, heart rate (HR), mean arterial pressure (MAP), and rate pressure product (RPP) were measured at rest (presupplement), baseline (1 h postsupplement), and during and after exercise.
Results
Magnitude-based inferences revealed that all of the supplements increased (small to moderate, likely to very likely) mean peak power (MPP), peak power (PP), and mean power (MP) compared to P, with greater MPP, PP, and MP in T compared to C (small, possible). Intrasprint fatigue index (%FIIntra) was greater in T compared to P and C (moderate, likely), and %FIInter was lower in T compared to C (small, possible). C and C +T increased HR, MAP, and RPP compared to P and T at baseline (moderate to very large, likely to most likely); however, these only remained higher in C compared to all conditions in the final sprint.
Conclusions
T elicited greater improvements in performance compared to P, C, or C +T while reducing the typical chronotropic and pressor effects of C.
Abstract via Europe PMC. Copyright remains with the authors or publisher.
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