Bicarbonato ingestion has no ergogenic effect on consecutive all out sprint test in MWX elite cyclists

Zabala, Mikel and Peinado Lozano, Ana Belen and Calderón Montero, Francisco Javier and Sampedro Molinuevo, Javier and Castillo, Manuel J. and Benito Peinado, Pedro José (2011). Bicarbonato ingestion has no ergogenic effect on consecutive all out sprint test in MWX elite cyclists. "European Journal of Applied Physiology y Fisiología Ocupacional", v. 5 ; pp. 3127-3134. ISSN 1439-6319. https://doi.org/10.1007/s00421-011-1938-8.

Description

Title: Bicarbonato ingestion has no ergogenic effect on consecutive all out sprint test in MWX elite cyclists
Author/s:
  • Zabala, Mikel
  • Peinado Lozano, Ana Belen
  • Calderón Montero, Francisco Javier
  • Sampedro Molinuevo, Javier
  • Castillo, Manuel J.
  • Benito Peinado, Pedro José
Item Type: Article
Título de Revista/Publicación: European Journal of Applied Physiology y Fisiología Ocupacional
Date: 2011
ISSN: 1439-6319
Volume: 5
Subjects:
Freetext Keywords: Bicarbonate, Wingate test, Acid–base balance Performance,� RPE, Perceived readiness
Faculty: Facultad de Ciencias de la Actividad Física y del Deporte (INEF) (UPM)
Department: Deportes
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

The aim of the present study was to examine the effect of sodium bicarbonate ingestion on consecutive "all out" sprint tests, analyzing the acid-base status and its influence on performance and perceived effort. Ten elite bicycle motocross (BMX) riders (20.7 ± 1.4 years, training experience 8-12 years) participated in this study which consisted of two trials. Each trial consisted of three consecutive Wingate tests (WTs) separated by 15 min recovery. Ninety minutes prior to exercise subjects ingested either NaHCO(3) (-) (0.3 g kg(-1) body weight) or placebo. Blood samples were collected for the assessment of blood acid-base status: bicarbonate concentration ([HCO(3) (-)]), pH, base excess (BE) and blood lactate concentration ([La(-)]). Performance variables of peak power (PP), mean power (MP), time to peak power and fatigue index were calculated for each sprint. Significant differences (p < 0.05) were observed in acid-base variables [pH before WT1: 7.47 ± 0.05 vs. 7.41 ± 0.03; [HCO(3) (-)] before WT1: 29.08 ± 2.27 vs. 22.85 ± 0.24 mmol L(-1) (bicarbonate vs. placebo conditions, respectively)], but there were not significant differences in performance variables between trials [PP WT1: 1,610 ± 373 vs. 1,599 ± 370 W; PP WT2: 1,548 ± 460 vs. 1,570 ± 428 W; PP WT3: 1,463 ± 361 vs. 1,519 ± 364 W. MP WT1: 809 ± 113 vs. 812 ± 108 W; MP WT2: 799 ± 135 vs. 799 ± 124 W; MP WT3: 762 ± 165 vs. 782 ± 118 W (bicarbonate vs. placebo conditions, respectively)]. Rating of perceived effort (RPE) was not influenced nor ratings of perceived readiness. Sodium bicarbonate ingestion modified significantly the blood acid-base balance, although the induced alkalosis did not improve the Wingate test performance, RPE and perceived readiness across three consecutive WTs in elite BMX cyclists.

More information

Item ID: 12344
DC Identifier: http://oa.upm.es/12344/
OAI Identifier: oai:oa.upm.es:12344
DOI: 10.1007/s00421-011-1938-8
Official URL: http://www.ncbi.nlm.nih.gov/pubmed/21465247
Deposited by: Memoria Investigacion
Deposited on: 27 Aug 2012 09:01
Last Modified: 21 Apr 2016 11:35
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