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Mero AA, Hirvonen P, Saarela J, et al. Effect of sodium bicarbonate and beta-alanine supplementation on maximal sprint swimming. J Int Soc Sports Nutr. 2013;10(1):52doi: 10.1186/1550-2783-10-52.
Mero, A. A., Hirvonen, P., Saarela, J., Hulmi, J. J., Hoffman, J. R., & Stout, J. R. (2013). Effect of sodium bicarbonate and beta-alanine supplementation on maximal sprint swimming. Journal of the International Society of Sports Nutrition, 10(1), 52. https://doi.org/10.1186/1550-2783-10-52
Mero, Antti A, et al. "Effect of sodium bicarbonate and beta-alanine supplementation on maximal sprint swimming." Journal of the International Society of Sports Nutrition vol. 10,1 (2013): 52. doi: https://doi.org/10.1186/1550-2783-10-52
Mero AA, Hirvonen P, Saarela J, Hulmi JJ, Hoffman JR, Stout JR. Effect of sodium bicarbonate and beta-alanine supplementation on maximal sprint swimming. J Int Soc Sports Nutr. 2013 Nov 11;10(1):52. doi: 10.1186/1550-2783-10-52. PMID: 24215679; PMCID: PMC4176133.
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J Int Soc Sports Nutr. 2013 Nov 11;10(1):52. doi: 10.1186/1550-2783-10-52.

Effect of sodium bicarbonate and beta-alanine supplementation on maximal sprint swimming.

Journal of the International Society of Sports Nutrition

Antti A Mero, Petri Hirvonen, Janne Saarela, Juha J Hulmi, Jay R Hoffman, Jeffrey R Stout

Affiliations

  1. Department of Biology of Physical Activity, University of Jyväskylä, P,O, Box 35, Jyväskylä 40351, Finland. [email protected].

PMID: 24215679 PMCID: PMC4176133 DOI: 10.1186/1550-2783-10-52

Abstract

BACKGROUND: This study examined the effect of simultaneous supplementation of extracellular buffer sodium bicarbonate (SB) and intracellular buffer beta-alanine (BA) on maximal sprint swimming.

METHODS: Thirteen competitive male swimmers completed 4 different treatments (placebo [PL], SB, BA + PL, and BA + SB) in a crossover procedure. PL or SB supplementation (0.3 g/kg body weight) was ingested 60 min before two maximal 100-m freestyle swims that were performed with a passive recovery of 12-min between each swim. Because of the known long washout period for carnosine, four weeks of BA supplementation (4.8 g per day) was started after the first week of PL or SB supplementation and performance testing.

RESULTS: The first maximal swims were similar, but the increase in time of the second versus the first 100-m swimming time was 1.5 s more (p < 0.05) in PL than in SB. Blood pH values were significantly (p < 0.05) greater in the SB and in the BA + SB groups compared to the PL and BA + PL values. There were no differences in peak blood lactate between the treatments.

CONCLUSION: Supplementing with SB prior to performing maximal sprint swimming with repetitions under 60 s improves performance. However, co-supplementation with SB and BA did not confer any added benefit on maximal swim performance.

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