Effects of taurine supplementation in elite swimmers performance
Open accessAbstract
AIM Taurine is considered a semi-essential amino acid characterized by having various physiological functions in the body that modulate mechanisms of action involved in the muscle contraction process, increased energy expenditure, insulin signaling pathway, carbohydrate metabolism, and scavenging free radicals. These functions are crucial for aerobic exercise performance; thus, taurine supplementation may benefit athletes’ performance. The objective of this study was to evaluate the effects of taurine supplementation on the resting energy expenditure and physical performance of swimming athletes. METHODS In a double-blind study, 14 male swimmers were randomized into two groups: the taurine group (n = 7) and the placebo group (n = 7), which received 3 g per day of taurine or placebo in capsules during 8 weeks. Resting energy expenditure, plasma taurine, physical performance, anthropometry, dietary consumption were measured and an incremental test was performed to determine their maximal front crawl swimming performances before and after the 8-week period. RESULTS The levels of serum taurine (p < 0.0001) and lactate (p = 0.0130) showed a significant increase in the taurine group; however, the other variables were not different. No changes were observed in the resting energy expenditure, mean speed performed, and the anaerobic threshold of the swimmers post-supplementation period. CONCLUSION Supplementation of taurine increased plasma concentrations of this amino acid, but did not lead to significant changes in food intake, rest energy expenditure, and athletes’ performance. However, the supplemented group presented a higher lactate production, suggesting a possible positive effect of taurine on the anaerobic lactic metabolism.
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Nitrate metabolism to nitric oxide requires oral cavity bacteria, and peak in blood occurs 2-3 h after ingestion.
“However, nitrate metabolism to nitric oxide requires oral cavity bacteria [41] and peak in the blood occurs 2-3 h after ingestion [45]”
From Dietary and Ergogenic Supplementation to Improve Elite Soccer Players’ Performance (2021) · cites this paper as [41]
Citation [45] is attached to the claim that blood levels peak 2–3 hours after ingestion; the oral-bacteria claim is attributed to [41]. The Results report plasma taurine concentrations after eight weeks of supplementation, but our copy does not address a 2–3-hour blood peak after ingestion. Searches for that timing and for nitrate metabolism found no supporting passage. (LLM, conf=0.77)
Experimental — accuracy not yet measuredDietary supplementation of nitrate through beet juice induces an increase in plasma nitrite concentration, subsequently increasing nitric oxide production.
“Dietary supplementation of nitrate (NO3 -) through beet juice induces an increase in the concentration of nitrite (NO 2) in plasma [40] subsequently increasing the production of nitric oxide (NO) [41].”
From Dietary and Ergogenic Supplementation to Improve Elite Soccer Players’ Performance (2021) · cites this paper as [41]
The Results and Discussion report effects of taurine supplementation in swimmers, including increased plasma taurine and blood lactate; page numbers are unavailable in our copy. Searches for beet juice, dietary nitrate, plasma nitrite, and nitric oxide production found no passage addressing the cited claim. (LLM, conf=0.78)
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Cites
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Dietary and Ergogenic Supplementation to Improve Elite Soccer Players’ Performance
Fernandes, H. (2021) · Annals of Nutrition and Metabolism · doi:10.1159/000516397 · Cited by 12 · see citing works
Retracted
- Authors
- Batitucci, G., Terrazas, S. I. B. M., Nóbrega, M. P., Carvalho, F. G. D., Papoti, M., Marchini, J. S., Silva, A. S. R. D., & Freitas, E. C. D.
- Affiliations
- Universidade Estadual Paulista (Unesp) (BR)
- Universidade de São Paulo (BR)
- Universidade de São Paulo, Brazil
- ORCID
- Venue
- Motriz: Revista de Educação Física
- Publisher
- FapUNIFESP (SciELO)
- Published
- 2018-03-19
- Volume
- 24
- Issue
- 1
- ISSN
- 1415-9805 (ISSN-L)
- 1980-6574
- OpenAlex
- W2789718274
- Cited by
- 13
- References
- 2
- Citations by year
- 2025: 1 · 2024: 1 · 2023: 2 · 2022: 4 · 2021: 3 · 2020: 1 · 2019: 1
- FWCI
- 0.70
- Type
- journal article
- Language
- pt
- Open access
- gold
- doi.org
- Licence
- cc-by
- Locations
- Motriz Revista de Educação Física (publishedVersion, cc-by)
- LA Referencia (Red Federada de Repositorios Institucionales de Publicaciones Científicas) (publishedVersion, other-oa)
- Americanae (AECID Library) (submittedVersion, other-oa)
- DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
- LA Referencia (Red Federada de Repositorios Institucionales de Publicaciones Científicas) (submittedVersion, other-oa)
- Topics
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Cell Biology › Aldose Reductase and Taurine
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Cell Biology › Muscle metabolism and nutrition
- Health Sciences › Medicine › Orthopedics and Sports Medicine › Sports Performance and Training
- Keywords
- taurine supplementation, elite swimmers, swimming performance, resting energy expenditure, plasma taurine, lactate, freestyle swimming, dietary intake, amino acid supplementation
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