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Zandona BA, Ramos RA, de Oliveira CDS, McAnulty SR, Ferreira LHB, Smolarek AC, Enes AAN, Urbinati KMDSS, Aragon AA, Schoenfeld BJ, de Souza Junior TP. Reduced Dose of Beta-Alanine Is Sufficient to Maintain Performance in Repeated Sprints. J Strength Cond Res 2020; 36:1636-1642. [PMID: 32833890 DOI: 10.1519/jsc.0000000000003715] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Zandona, BA, Ramos, RA, de Oliveira, CdS, McAnulty, SR, Ferreira, LHB, Smolarek, AC, Enes, AAN, Urbinati, KMdSS, Aragon, AA, Schoenfeld, BJ, and de Souza Junior, TP. Reduced Dose of Beta-Alanine Is Sufficient to Maintain Performance in Repeated Sprints. J Strength Cond Res XX(X): 000-000, 2020-Beta-alanine (BA) supplementation has been shown to be effective in improving physical performance by increasing carnosine concentration. However, it is still necessary to know the effect of a maintenance dose on performance. Thus, this study aimed to investigate the effects of a maintenance dose of BA supplementation on performance. Forty-four anaerobically trained men with 23.9 ± 3.8 years of age, 176.0 ± 0.05 cm height, 81.2 ± 7.5 kg body mass, and 15.5 ± 2.9% of body fat performed a cycle ergometer test consisting of 4 sprints of 30 s with 4 minutes of active recovery. The study comprised 3 phases: (a) presupplementation, (b) supplementation with 6.4 g·d BA or placebo, and (c) postsupplementation with a maintenance dose of 1.2 g·d of BA or interruption of supplementation. Data were analyzed using generalized estimated equations with a priori 0.05 level of significance. The placebo group and interruption group presented a lower power (7.28 ± 0.66 and 7.71 ± 0.42 W·kg vs. 8.04 ± 0.84 and 9.25 ± 1.18 W·kg, respectively; p < 0.05) during the third sprint in postsupplementation, whereas the maintenance group maintained the required power (7.47 ± 1.03 vs. 8.74 ± 1.07 W·kg; p > 0.05). The placebo group also presented higher percentage of fatigue (44.5% ± 12.3 and 44.8% ± 7.7 vs. 37.6 ± 7.2%; p = 0.021) and higher subjective perception of exertion (8.92 ± 0.90 vs. 8.00 ± 1.60; p = 0.028). Therefore, the maintenance dose of 1.2 g·d BA was effective in maintaining performance, whereas a reduction in performance was observed after supplementation interruption.
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Affiliation(s)
- Bruna A Zandona
- Research Group on Metabolism, Nutrition and Strength Training, Federal University of Paraná, Curitiba, Brazil
| | - Renan A Ramos
- Research Group on Metabolism, Nutrition and Strength Training, Federal University of Paraná, Curitiba, Brazil
| | | | - Steven R McAnulty
- Department of Health and Exercise Science, Appalachian State University, Boone, North Carolina
| | - Luis H B Ferreira
- Research Group on Metabolism, Nutrition and Strength Training, Federal University of Paraná, Curitiba, Brazil.,Research Group on Metabolism, Nutrition and Strength Training, Federal University of Paraná, Irati, Brazil
| | - Andre C Smolarek
- Research Group on Metabolism, Nutrition and Strength Training, Federal University of Paraná, Curitiba, Brazil.,Research Group on Metabolism, Nutrition and Strength Training, Federal University of Paraná, Irati, Brazil
| | - Alysson A N Enes
- Research Group on Metabolism, Nutrition and Strength Training, Federal University of Paraná, Curitiba, Brazil
| | | | | | - Brad J Schoenfeld
- Department of Health Sciences, CUNY Lehman College, Bronkx, New York
| | - Tácito P de Souza Junior
- Research Group on Metabolism, Nutrition and Strength Training, Federal University of Paraná, Curitiba, Brazil.,Department of Health and Exercise Science, Appalachian State University, Boone, North Carolina
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Brisola GMP, Zagatto AM. Ergogenic Effects of β-Alanine Supplementation on Different Sports Modalities: Strong Evidence or Only Incipient Findings? J Strength Cond Res 2018; 33:253-282. [PMID: 30431532 DOI: 10.1519/jsc.0000000000002925] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
Brisola, GMP and Zagatto, AM. Ergogenic effects of β-alanine supplementation on different sports modalities: strong evidence or only incipient findings? J Strength Cond Res 33(1): 253-282, 2019-β-Alanine supplementation is a popular nutritional ergogenic aid among the sports community. Due to its efficacy, already proven in the literature, to increase the intramuscular carnosine content (β-alanyl-L-histidine), whose main function is intramuscular buffering, β-alanine supplementation has become a nutritional strategy to improve performance, mainly in high-intensity efforts. However, although many studies present evidence of the efficacy of β-alanine supplementation in high-intensity efforts, discrepancies in outcomes are still present and the performance enhancing effects seem to be related to the specificities of each sport discipline, making it difficult for athletes/coaches to interpret the efficacy of β-alanine supplementation. Thus, this study carried out a review of the literature on this topic and summarized, analyzed, and critically discussed the findings with the objective of clarifying the current evidence found in the literature on different types of efforts and sport modalities. The present review revealed that inconsistencies are still found in aerobic parameters determined in incremental tests, except for physical working capacity at the neuromuscular fatigue threshold. Inconsistencies are also found for strength exercises and intermittent high-intensity efforts, whereas in supramaximal continuous mode intermittent exercise, the beneficial evidence is strong. In sports modalities, the evidence should be analyzed separately for each sporting modality. Thus, sports modalities that have strong evidence of the ergogenic effects of β-alanine supplementation are: cycling race of 4 km, rowing race of 2,000 m, swimming race of 100 and 200 m, combat modalities, and water polo. Finally, there is some evidence of slight additional effects on physical performance from cosupplementation with sodium bicarbonate.
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Affiliation(s)
- Gabriel M P Brisola
- Department of Physical Education, Post-Graduate Program in Movement Sciences, School of Sciences, Sao Paulo State University (Unesp), Bauru, Brazil.,Department of Physical Education, Laboratory of Physiology and Sport Performance (LAFIDE), School of Sciences, Sao Paulo State University (Unesp), Bauru, Brazil
| | - Alessandro M Zagatto
- Department of Physical Education, Laboratory of Physiology and Sport Performance (LAFIDE), School of Sciences, Sao Paulo State University (Unesp), Bauru, Brazil
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