The Effects of Caffeine, Taurine, or Caffeine-Taurine Coingestion on Repeat-Sprint Cycling Performance and Physiological Responses
Open accessAbstract
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 (%FI Intra) was greater in T compared to P and C (moderate, likely), and %FI Inter 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.
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A 50 mg/kg dose of taurine outperformed caffeine, placebo and caffeine + taurine on performance changes after repeated Wingate anaerobic capacity tests.
“Warnock et al. [630] reported that a 50 mg/kg dose of taurine outperformed caffeine, placebo and caffeine + taurine on performance changes after repeated Wingate anaerobic capacity tests.”
From ISSN exercise & sports nutrition review update: research & recommendations (2018) · cites this paper as [630]
The Methods and Discussion report a 50 mg/kg taurine condition in repeated Wingate tests and greater power output than placebo. The Discussion describes its advantage over caffeine as only “possibly greater,” while the Results call some taurine–caffeine-plus-taurine differences unclear. The claim overstates the certainty of taurine outperforming every comparator. (LLM, conf=0.82)
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- Authors
- Warnock, R., Jeffries, O., Patterson, S., & Waldron, M.
- Affiliations
- St Mary's University Twickenham London (GB)
- University of New England (AU)
- Corresponding author
- Waldron, Mark
- Venue
- International Journal of Sports Physiology and Performance
- Publisher
- Human Kinetics
- Published
- 2017-11-01
- Volume
- 12
- Issue
- 10
- Pages
- 1341-1347
- ISSN
- 1555-0265 (ISSN-L)
- 1555-0273
- OpenAlex
- W2603096308
- Cited by
- 64
- References
- 29
- Citations by year
- 2026: 3 · 2025: 5 · 2024: 9 · 2023: 5 · 2022: 15 · 2021: 4 · 2020: 4 · 2019: 11 · 2018: 6 · 2017: 2
- FWCI
- 6.91
- Type
- journal article
- Language
- en
- Open access
- bronze
- doi.org
- Locations
- International Journal of Sports Physiology and Performance (publishedVersion)
- PubMed (publishedVersion)
- St Mary's University Repository (ULCC) (acceptedVersion)
- Newcastle University ePrints (Newcastle Univesity)
- Topics
- Health Sciences › Medicine › Orthopedics and Sports Medicine › Sports Performance and Training
- Health Sciences › Medicine › Pharmacology › Coffee research and impacts
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Cell Biology › Muscle metabolism and nutrition
- Keywords
- caffeine, taurine, Wingate test, peak power, chronotropic response, pressor response, rate-pressure product, blood lactate, perceived exertion, team sport athletes, ergogenic aids
- MeSH terms
- Bicycling, Blood Pressure, Caffeine, Exercise Test, Physical Exertion, Heart Rate, Humans, Taurine, Single-Blind Method, Ergometry, Cross-Over Studies, Athletic Performance, Young Adult
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