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

Zabala, Mikel; Peinado Lozano, Ana Belen; Calderón Montero, Francisco Javier; Sampedro Molinuevo, Javier; Castillo, Manuel J. y 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.

Descripción

Título: Bicarbonato ingestion has no ergogenic effect on consecutive all out sprint test in MWX elite cyclists
Autor/es:
  • Zabala, Mikel
  • Peinado Lozano, Ana Belen
  • Calderón Montero, Francisco Javier
  • Sampedro Molinuevo, Javier
  • Castillo, Manuel J.
  • Benito Peinado, Pedro José
Tipo de Documento: Artículo
Título de Revista/Publicación: European Journal of Applied Physiology y Fisiología Ocupacional
Fecha: 2011
Volumen: 5
Materias:
Palabras Clave Informales: Bicarbonate, Wingate test, Acid–base balance Performance,� RPE, Perceived readiness
Escuela: Facultad de Ciencias de la Actividad Física y del Deporte (INEF) (UPM)
Departamento: Deportes
Licencias Creative Commons: Reconocimiento - Sin obra derivada - No comercial

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Resumen

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.

Más información

ID de Registro: 12344
Identificador DC: http://oa.upm.es/12344/
Identificador OAI: oai:oa.upm.es:12344
Identificador DOI: 10.1007/s00421-011-1938-8
URL Oficial: http://www.ncbi.nlm.nih.gov/pubmed/21465247
Depositado por: Memoria Investigacion
Depositado el: 27 Ago 2012 09:01
Ultima Modificación: 21 Abr 2016 11:35
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