Effect of induced alkalosis on performance during a field-simulated BMX cycling competition

Peinado Lozano, Ana Belen and Holgado, Darias and Luque Casado, Antonio and Rojo Tirado, Miguel Angel and Sanabria, Daniel and González, Coral and Mateo March, Manuel and Sanchez Muñoz, Cristobal and Calderon Montero, Francisco Javier and Zabala, Mikel (2019). Effect of induced alkalosis on performance during a field-simulated BMX cycling competition. "Journal of Science and Medicine in Sport", v. 22 (n. 3); pp. 335-341. ISSN 1440-2440. https://doi.org/10.1016/j.jsams.2018.08.010.

Description

Title: Effect of induced alkalosis on performance during a field-simulated BMX cycling competition
Author/s:
  • Peinado Lozano, Ana Belen
  • Holgado, Darias
  • Luque Casado, Antonio
  • Rojo Tirado, Miguel Angel
  • Sanabria, Daniel
  • González, Coral
  • Mateo March, Manuel
  • Sanchez Muñoz, Cristobal
  • Calderon Montero, Francisco Javier
  • Zabala, Mikel
Item Type: Article
Título de Revista/Publicación: Journal of Science and Medicine in Sport
Date: 2019
ISSN: 1440-2440
Volume: 22
Subjects:
Freetext Keywords: Acidosis; Athletic performance; Ergogenic aids; Heart rate variability; Sodium bicarbonate
Faculty: Facultad de Ciencias de la Actividad Física y del Deporte (INEF) (UPM)
Department: Salud y Rendimiento Humano
Creative Commons Licenses: Recognition - No derivative works - Non commercial

Full text

[img] PDF - Users in campus UPM only - Requires a PDF viewer, such as GSview, Xpdf or Adobe Acrobat Reader
Download (3MB)

Abstract

Objectives: The aim of the present study was to test the effect of sodium bicarbonate (NaHCO3-) ingestion on performance during a simulated competition on a Bicycle Motocross (BMX) track. Design: Double-blind cross-over study. Methods: Twelve elite male BMX cyclists (age: 19.2±3.4 years; height: 174.2±5.3cm; body mass: 72.4±8.4kg) ingested either NaHCO3- (0.3g.kg-1 body weight) or placebo 90min prior to exercise. The cyclists completed three races in a BMX Olympic track interspersed with 15min of recovery. Blood samples were collected to assess the blood acid-base status. Performance, cardiorespiratory, heart rate variability (HRV) as well as subjective variables were assessed. Results: The main effect of condition (NaHCO3- vs. placebo) was observed in pH, bicarbonate concentration and base excess (p<0.05), with a significant blood alkalosis. No changes were found in time, peak velocity and time to peak velocity for condition (p>0.05). The HRV analysis showed a significant effect of NaHCO3- ingestion, expressed by the rMSSD30 (root mean square of the successive differences) (p<0.001). There was no effect of condition on oxygen uptake, carbon dioxide production, or pulmonary ventilation (p>0.05). Finally, there was no effect of condition for any subjective scale (p>0.05). Conclusions: We present here the first field condition study to investigate the effect of bicarbonate ingestion over performance in BMX discipline. The results showed that NaHCO3--induced alkalosis did not improve performance in a simulated BMX competition in elite BMX cyclists, although future studies should consider the effects of NaHCO3- on autonomic function as a component of recovery.

More information

Item ID: 64021
DC Identifier: http://oa.upm.es/64021/
OAI Identifier: oai:oa.upm.es:64021
DOI: 10.1016/j.jsams.2018.08.010
Official URL: https://www.jsams.org/article/S1440-2440(18)30555-3/fulltext
Deposited by: Memoria Investigacion
Deposited on: 03 Nov 2020 12:01
Last Modified: 03 Nov 2020 12:01
  • Logo InvestigaM (UPM)
  • Logo GEOUP4
  • Logo Open Access
  • Open Access
  • Logo Sherpa/Romeo
    Check whether the anglo-saxon journal in which you have published an article allows you to also publish it under open access.
  • Logo Dulcinea
    Check whether the spanish journal in which you have published an article allows you to also publish it under open access.
  • Logo de Recolecta
  • Logo del Observatorio I+D+i UPM
  • Logo de OpenCourseWare UPM