Cardiorespiratory optimal point as a submaximal evaluation tool in endurance athletes: an exploratory study
Fecha
2023Autor
Versión
Acceso abierto / Sarbide irekia
Tipo
Artículo / Artikulua
Versión
Versión publicada / Argitaratu den bertsioa
Impacto
|
10.3389/fphys.2023.1087829
Resumen
Introduction: The cardiorespiratory optimal point (COP) represents the lowest minute
ventilation to oxygen consumption ratio (VE/VO2) and can be estimated during a CPET at
submaximal intensity when an exercise test until volitional fatigue is not always advisable
(i.e., a conflict zone where you cannot be confident of the security because nearcompetition, off-season, among other). COP’s physio ...
[++]
Introduction: The cardiorespiratory optimal point (COP) represents the lowest minute
ventilation to oxygen consumption ratio (VE/VO2) and can be estimated during a CPET at
submaximal intensity when an exercise test until volitional fatigue is not always advisable
(i.e., a conflict zone where you cannot be confident of the security because nearcompetition, off-season, among other). COP’s physiological components have not been
wholly described yet. Therefore, this study seeks to identify the determinants of COP in
highly trained athletes and its influence on maximum and sub-maximum variables during
CPET through principal c omponent analysis (PCA) (explains the dataset’s variance).
Methods: Female (n = 9; age, 17.4 ± 3.1 y; maximal VO2 [VO2max]), 46.2 ± 5.9 mL/
kg/min) and male (n = 24; age, 19.7 ± 4.0 y; VO2max, 56.1 ± 7.6 mL/kg/min) athletes
performed a CPET to determine the COP, ventilatory threshold 1 (VT1) and 2 (VT2),
and VO2max. The PCA was used to determine the relationship between variables and
COP, explaining their variance.
Results: Our data revealed that females and males displayed different COP values.
Indeed, males showed a significant diminished COP compared to the female group
(22.6 ± 2.9 vs. 27.2 ±3.4 VE/VO2, respectively); nevertheless, COP was allocated
before VT1 in both groups.
Discussion: PC analysis revealed that the COP variance was mainly explained (75.6%) by
PC1 (expired CO2 at VO2max) and PC2 (VE at VT2), possibly influencing cardiorespiratory
efficiency at VO2max and VT2. Our data suggest that COP could be used as a
submaximal index to monitor and assess cardiorespiratory system efficiency in
endurance athletes. The COP could be particularly useful during the offseason and
competitive periods and the return to the sports continuum. [--]
Materias
Musculoskeletal and neural physiological phenomena,
Exercise test,
Oxygen consumption,
Anaerobic threshold,
Athletic performance,
Physical endurance
Publicado en
Frontiers in Physiology 14:1087829
Departamento
Universidad Pública de Navarra. Departamento de Ciencias de la Salud /
Nafarroako Unibertsitate Publikoa. Osasun Zientziak Saila
Versión del editor
Entidades Financiadoras
This study was supported by Minera Escondida Ltda. MEL2203; the “Agencia Nacional de Investigación y Desarrollo (ANID)”, through Fondecyt de Iniciación #11220870 and Anillo ACT210083.
Aparece en las colecciones
Los documentos de Academica-e están protegidos por derechos de autor con todos los derechos reservados, a no ser que se indique lo contrario.
La licencia del ítem se describe como © 2023 Oyarzo-Aravena, Arce-Alvarez,
Salazar-Ardiles, Ramirez-Campillo,
Alvarez, Toledo, Izquierdo and Andrade.
This is an open-access article distributed
under the terms of the Creative Commons
Attribution License (CC BY). The use,
distribution or reproduction in other
forums is permitted, provided the original
author(s) and the copyright owner(s) are
credited and that the original publication in
this journal is cited, in accordance with
accepted academic practice. No use,
distribution or reproduction is permitted
which does not comply with these terms.