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Effect of betaine supplementation on cycling sprint performance

PURPOSE: To examine the effect of betaine supplementation on cycling sprint performance. METHODS: Sixteen recreationally active subjects (7 females and 9 males) completed three sprint tests, each consisting of four 12 sec efforts against a resistance equal to 5.5% of body weight; efforts were separa...

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Detalles Bibliográficos
Autores principales: Pryor, J Luke, Craig, Stuart AS, Swensen, Thomas
Formato: Online Artículo Texto
Lenguaje:English
Publicado: BioMed Central 2012
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3353850/
https://www.ncbi.nlm.nih.gov/pubmed/22471891
http://dx.doi.org/10.1186/1550-2783-9-12
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author Pryor, J Luke
Craig, Stuart AS
Swensen, Thomas
author_facet Pryor, J Luke
Craig, Stuart AS
Swensen, Thomas
author_sort Pryor, J Luke
collection PubMed
description PURPOSE: To examine the effect of betaine supplementation on cycling sprint performance. METHODS: Sixteen recreationally active subjects (7 females and 9 males) completed three sprint tests, each consisting of four 12 sec efforts against a resistance equal to 5.5% of body weight; efforts were separated by 2.5 min of cycling at zero resistance. Test one established baseline; test two and three were preceded by seven days of daily consumption of 591 ml of a carbohydrate-electrolyte beverage as a placebo or a carbohydrate-electrolyte beverage containing 0.42% betaine (approximately 2.5 grams of betaine a day); half the beverage was consumed in the morning and the other half in the afternoon. We used a double blind random order cross-over design; there was a 3 wk washout between trials two and three. Average and maximum peak and mean power were analyzed with one-way repeated measures ANOVA and, where indicated, a Student Newman-Keuls. RESULTS: Compared to baseline, betaine ingestion increased average peak power (6.4%; p < 0.001), maximum peak power (5.7%; p < 0.001), average mean power (5.4%; p = 0.004), and maximum mean power (4.4%; p = 0.004) for all subjects combined. Compared to placebo, betaine ingestion significantly increased average peak power (3.4%; p = 0.026), maximum peak power max (3.8%; p = 0.007), average mean power (3.3%; p = 0.034), and maximum mean power (3.5%; p = 0.011) for all subjects combined. There were no differences between the placebo and baseline trials. CONCLUSIONS: One week of betaine ingestion improved cycling sprint power in recreationally active males and females.
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spelling pubmed-33538502012-05-17 Effect of betaine supplementation on cycling sprint performance Pryor, J Luke Craig, Stuart AS Swensen, Thomas J Int Soc Sports Nutr Research Article PURPOSE: To examine the effect of betaine supplementation on cycling sprint performance. METHODS: Sixteen recreationally active subjects (7 females and 9 males) completed three sprint tests, each consisting of four 12 sec efforts against a resistance equal to 5.5% of body weight; efforts were separated by 2.5 min of cycling at zero resistance. Test one established baseline; test two and three were preceded by seven days of daily consumption of 591 ml of a carbohydrate-electrolyte beverage as a placebo or a carbohydrate-electrolyte beverage containing 0.42% betaine (approximately 2.5 grams of betaine a day); half the beverage was consumed in the morning and the other half in the afternoon. We used a double blind random order cross-over design; there was a 3 wk washout between trials two and three. Average and maximum peak and mean power were analyzed with one-way repeated measures ANOVA and, where indicated, a Student Newman-Keuls. RESULTS: Compared to baseline, betaine ingestion increased average peak power (6.4%; p < 0.001), maximum peak power (5.7%; p < 0.001), average mean power (5.4%; p = 0.004), and maximum mean power (4.4%; p = 0.004) for all subjects combined. Compared to placebo, betaine ingestion significantly increased average peak power (3.4%; p = 0.026), maximum peak power max (3.8%; p = 0.007), average mean power (3.3%; p = 0.034), and maximum mean power (3.5%; p = 0.011) for all subjects combined. There were no differences between the placebo and baseline trials. CONCLUSIONS: One week of betaine ingestion improved cycling sprint power in recreationally active males and females. BioMed Central 2012-04-03 /pmc/articles/PMC3353850/ /pubmed/22471891 http://dx.doi.org/10.1186/1550-2783-9-12 Text en Copyright ©2012 Pryor et al; licensee BioMed Central Ltd. http://creativecommons.org/licenses/by/2.0 This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
spellingShingle Research Article
Pryor, J Luke
Craig, Stuart AS
Swensen, Thomas
Effect of betaine supplementation on cycling sprint performance
title Effect of betaine supplementation on cycling sprint performance
title_full Effect of betaine supplementation on cycling sprint performance
title_fullStr Effect of betaine supplementation on cycling sprint performance
title_full_unstemmed Effect of betaine supplementation on cycling sprint performance
title_short Effect of betaine supplementation on cycling sprint performance
title_sort effect of betaine supplementation on cycling sprint performance
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3353850/
https://www.ncbi.nlm.nih.gov/pubmed/22471891
http://dx.doi.org/10.1186/1550-2783-9-12
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