Effects of 4 weeks of β-alanine supplementation on aerobic fitness in water polo players.
The purpose of the present study was to investigate the ergogenic effects of 4 weeks of β-alanine supplementation on peak oxygen uptake ([Formula: see text]) and force associated with [Formula: see text] ([Formula: see text]) during a tethered swimming graded exercise test, and a three-minute all-ou...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Public Library of Science (PLoS)
2018-01-01
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| Series: | PLoS ONE |
| Online Access: | http://europepmc.org/articles/PMC6181339?pdf=render |
| _version_ | 1818613676454707200 |
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| author | Gabriel Motta Pinheiro Brisola Paulo Eduardo Redkva Dalton Muller Pessôa Filho Marcelo Papoti Alessandro Moura Zagatto |
| author_facet | Gabriel Motta Pinheiro Brisola Paulo Eduardo Redkva Dalton Muller Pessôa Filho Marcelo Papoti Alessandro Moura Zagatto |
| author_sort | Gabriel Motta Pinheiro Brisola |
| collection | DOAJ |
| description | The purpose of the present study was to investigate the ergogenic effects of 4 weeks of β-alanine supplementation on peak oxygen uptake ([Formula: see text]) and force associated with [Formula: see text] ([Formula: see text]) during a tethered swimming graded exercise test, and a three-minute all-out effort (3minALL-OUT) in water polo players. Twenty-two male national competitive level water polo players were randomly assigned to receive either 4 weeks of β-alanine (n = 11) or a placebo (n = 11) (i.e., 4.8 g·day-1 for 10 days, then6.4 g·day-1 for 18 days, resulting in 163.2 g over 28 days). The participants performed the TSGET and 3minALL-OUT before and after the supplementation period. There were no significant interaction effects between-groups for any variable, however, the magnitude-based inferences analyses showed a possibly beneficial effect (74%) of β-alanine supplementation on [Formula: see text] compared to placebo treatment (Δ% [post-pre] for Placebo group = -5.2%; Δ% [post-pre] for β-alanine group = +0.7%). Only the β-alanine group presented a significant reduction in [Formula: see text] expressed in absolute values (PRE = 3.3±0.6L·min-1; POST = 3.0±0.4L·min-1; p = .021). Similarly, only the β-alanine group presented a significant increase in critical force (PRE = 51.2±10.4N; POST = 56.5±13.1N; p = .044) and a reduction in the curvature constant parameter (W'; PRE = 2998.0±1103.7N·s; POST = 2224.6±1058.9N·s; p = .049). Thus, we can conclude that 4 weeks of β-alanine supplementation presented mixed results in water polo players, indicating that this nutritional strategy may not be effective in improving parameters of the TSGET and 3minALL-OUT . |
| first_indexed | 2024-12-16T16:05:54Z |
| format | Article |
| id | doaj.art-da4a9f3eadd1418280fa0a5f4ec25c18 |
| institution | Directory Open Access Journal |
| issn | 1932-6203 |
| language | English |
| last_indexed | 2024-12-16T16:05:54Z |
| publishDate | 2018-01-01 |
| publisher | Public Library of Science (PLoS) |
| record_format | Article |
| series | PLoS ONE |
| spelling | doaj.art-da4a9f3eadd1418280fa0a5f4ec25c182022-12-21T22:25:21ZengPublic Library of Science (PLoS)PLoS ONE1932-62032018-01-011310e020512910.1371/journal.pone.0205129Effects of 4 weeks of β-alanine supplementation on aerobic fitness in water polo players.Gabriel Motta Pinheiro BrisolaPaulo Eduardo RedkvaDalton Muller Pessôa FilhoMarcelo PapotiAlessandro Moura ZagattoThe purpose of the present study was to investigate the ergogenic effects of 4 weeks of β-alanine supplementation on peak oxygen uptake ([Formula: see text]) and force associated with [Formula: see text] ([Formula: see text]) during a tethered swimming graded exercise test, and a three-minute all-out effort (3minALL-OUT) in water polo players. Twenty-two male national competitive level water polo players were randomly assigned to receive either 4 weeks of β-alanine (n = 11) or a placebo (n = 11) (i.e., 4.8 g·day-1 for 10 days, then6.4 g·day-1 for 18 days, resulting in 163.2 g over 28 days). The participants performed the TSGET and 3minALL-OUT before and after the supplementation period. There were no significant interaction effects between-groups for any variable, however, the magnitude-based inferences analyses showed a possibly beneficial effect (74%) of β-alanine supplementation on [Formula: see text] compared to placebo treatment (Δ% [post-pre] for Placebo group = -5.2%; Δ% [post-pre] for β-alanine group = +0.7%). Only the β-alanine group presented a significant reduction in [Formula: see text] expressed in absolute values (PRE = 3.3±0.6L·min-1; POST = 3.0±0.4L·min-1; p = .021). Similarly, only the β-alanine group presented a significant increase in critical force (PRE = 51.2±10.4N; POST = 56.5±13.1N; p = .044) and a reduction in the curvature constant parameter (W'; PRE = 2998.0±1103.7N·s; POST = 2224.6±1058.9N·s; p = .049). Thus, we can conclude that 4 weeks of β-alanine supplementation presented mixed results in water polo players, indicating that this nutritional strategy may not be effective in improving parameters of the TSGET and 3minALL-OUT .http://europepmc.org/articles/PMC6181339?pdf=render |
| spellingShingle | Gabriel Motta Pinheiro Brisola Paulo Eduardo Redkva Dalton Muller Pessôa Filho Marcelo Papoti Alessandro Moura Zagatto Effects of 4 weeks of β-alanine supplementation on aerobic fitness in water polo players. PLoS ONE |
| title | Effects of 4 weeks of β-alanine supplementation on aerobic fitness in water polo players. |
| title_full | Effects of 4 weeks of β-alanine supplementation on aerobic fitness in water polo players. |
| title_fullStr | Effects of 4 weeks of β-alanine supplementation on aerobic fitness in water polo players. |
| title_full_unstemmed | Effects of 4 weeks of β-alanine supplementation on aerobic fitness in water polo players. |
| title_short | Effects of 4 weeks of β-alanine supplementation on aerobic fitness in water polo players. |
| title_sort | effects of 4 weeks of β alanine supplementation on aerobic fitness in water polo players |
| url | http://europepmc.org/articles/PMC6181339?pdf=render |
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