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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...
Autores principales: | , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
BioMed Central
2012
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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. |
format | Online Article Text |
id | pubmed-3353850 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2012 |
publisher | BioMed Central |
record_format | MEDLINE/PubMed |
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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