de Salles Painelli, V, Roschel, H, De Jesus, F, Sale, C ORCID: https://orcid.org/0000-0002-5816-4169, Harris, RC, Solis, MY, Benatti, FB, Gualano, G, Lancha Jr., AH and Artioli, GG ORCID: https://orcid.org/0000-0001-8463-2213, 2013. The ergogenic effect of beta-alanine combined with sodium bicarbonate on high-intensity swimming performance. Applied Physiology, Nutrition, and Metabolism, 38 (5), pp. 525-532. ISSN 1715-5312
Preview |
Text
213091_PubSub869_Sale.pdf Download (3MB) | Preview |
Abstract
We investigated the effect of beta-alanine (BA) alone (study A) and in combination with sodium bicarbonate (SB) (study B) on 100- and 200-m swimming performance. In study A, 16 swimmers were assigned to receive either BA (3.2 g·day−1 for 1 week and 6.4 g·day−1 for 4 weeks) or placebo (PL; dextrose). At baseline and after 5 weeks of supplementation, 100- and 200-m races were completed. In study B, 14 were assigned to receive either BA (3.2 g·day−1 for 1 week and 6.4 g·day−1 for 3 weeks) or PL. Time trials were performed once before and twice after supplementation (with PL and SB), in a crossover fashion, providing 4 conditions: PL-PL, PL-SB, BA-PL, and BA-SB. In study A, BA supplementation improved 100- and 200-m time-trial performance by 2.1% (p = 0.029) and 2.0% (p = 0.0008), respectively. In study B, 200-m time-trial performance improved in all conditions, compared with presupplementation, except the PL-PL condition (PL-SB, +2.3%; BA-PL, +1.5%; BA-SB, +2.13% (p < 0.05)). BA-SB was not different from BA-PL (p = 0.21), but the probability of a positive effect was 78.5%. In the 100-m time-trial, only a within-group effect for SB was observed in the PL-SB (p = 0.022) and BA-SB (p = 0.051) conditions. However, 6 of 7 athletes swam faster after BA supplementation. The probability of BA having a positive effect was 65.2%; when SB was added to BA, the probability was 71.8%. BA and SB supplementation improved 100- and 200-m swimming performance. The coingestion of BA and SB induced a further nonsignificant improvement in performance.
Item Type: | Journal article |
---|---|
Publication Title: | Applied Physiology, Nutrition, and Metabolism |
Creators: | de Salles Painelli, V., Roschel, H., De Jesus, F., Sale, C., Harris, R.C., Solis, M.Y., Benatti, F.B., Gualano, G., Lancha Jr., A.H. and Artioli, G.G. |
Publisher: | NRC Research Press, a division of Canadian Science Publishing |
Date: | 2013 |
Volume: | 38 |
Number: | 5 |
ISSN: | 1715-5312 |
Identifiers: | Number Type 10.1139/apnm-2012-0286 DOI |
Rights: | © Copyright 2013 – Canadian Science Publishing |
Divisions: | Schools > School of Science and Technology |
Record created by: | EPrints Services |
Date Added: | 09 Oct 2015 10:03 |
Last Modified: | 22 Sep 2017 12:47 |
URI: | https://irep.ntu.ac.uk/id/eprint/6990 |
Actions (login required)
Edit View |
Statistics
Views
Views per month over past year
Downloads
Downloads per month over past year