The midpoint between ventilatory thresholds approaches maximal lactate steady state intensity in amateur cyclists

Peinado Lozano, Ana Belen and Pessoa Filho, D. M. and Diaz Molina, Victor and Benito Peinado, Pedro José and Alvarez-Sánchez, M. and Zapico, A. G. and Calderon Montero, Francisco Javier (2016). The midpoint between ventilatory thresholds approaches maximal lactate steady state intensity in amateur cyclists. "Biology of Sport", v. 33 (n. 4); pp. 373-380. ISSN 0860-021X. https://doi.org/10.5604/20831862.1221812.

Description

Title: The midpoint between ventilatory thresholds approaches maximal lactate steady state intensity in amateur cyclists
Author/s:
  • Peinado Lozano, Ana Belen
  • Pessoa Filho, D. M.
  • Diaz Molina, Victor
  • Benito Peinado, Pedro José
  • Alvarez-Sánchez, M.
  • Zapico, A. G.
  • Calderon Montero, Francisco Javier
Item Type: Article
Título de Revista/Publicación: Biology of Sport
Date: 2016
ISSN: 0860-021X
Volume: 33
Subjects:
Freetext Keywords: Lactic acidosis, respiratory physiology,exercise test, workload
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

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Abstract

The aim was to determine whether the midpoint between ventilatory thresholds (MPVT) corresponds to maximal lactate steady state (MLSS). Twelve amateur cyclists (21.0 ± 2.6 years old; 72.2 ± 9.0 kg; 179.8 ± 7.5 cm) performed an incremental test (25 W·min-1) until exhaustion and several constant load tests of 30 minutes to determine MLSS, on different occasions. Using MLSS determination as the reference method, the agreement with five other parameters (MPVT; first and second ventilatory thresholds: VT1 and VT2; respiratory exchange ratio equal to 1: RER = 1.00; and Maximum) was analysed by the Bland-Altman method. The difference between workload at MLSS and VT1, VT2, RER=1.00 and Maximum was 31.1 ± 20.0, -86.0 ± 18.3, -63.6 ± 26.3 and -192.3 ± 48.6 W, respectively. MLSS was underestimated from VT1 and overestimated from VT2, RER = 1.00 and Maximum. The smallest difference (-27.5 ± 15.1 W) between workload at MLSS and MPVT was in better agreement than other analysed parameters of intensity in cycling. The main finding is that MPVT approached the workload at MLSS in amateur cyclists, and can be used to estimate maximal steady state.

More information

Item ID: 45793
DC Identifier: http://oa.upm.es/45793/
OAI Identifier: oai:oa.upm.es:45793
DOI: 10.5604/20831862.1221812
Official URL: http://183.indexcopernicus.com/abstracted.php?level=5&ICID=1221812
Deposited by: Memoria Investigacion
Deposited on: 04 Jul 2017 10:25
Last Modified: 04 Jun 2019 13:15
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