Using ramp-incremental VÌO2 responses for constant-intensity exercise selection.
Appl Physiol Nutr Metab
; 43(9): 882-892, 2018 Sep.
Article
en En
| MEDLINE
| ID: mdl-29570982
ABSTRACT
Despite compelling evidence to the contrary, the view that oxygen uptake (VÌO2) increases linearly with exercise intensity (e.g., power output, speed) until reaching its maximum persists within the exercise physiology literature. This viewpoint implies that the VÌO2 response at any constant intensity is predictable from a ramp-incremental exercise test. However, the VÌO2 versus task-specific exercise intensity relationship constructed from ramp-incremental versus constant-intensity exercise are not equivalent preventing the use of VÌO2 responses from 1 domain to predict those of the other. Still, this "linear" translational framework continues to be adopted as the guiding principle for aerobic exercise prescription and there remains in the sport science literature a lack of understanding of how to interpret VÌO2 responses to ramp-incremental exercise and how to use those data to assign task-specific constant-intensity exercise. The objectives of this paper are to (i) review the factors that disassociate the VÌO2 versus exercise intensity relationship between ramp-incremental and constant-intensity exercise paradigms; (ii) identify when it is appropriate (or not) to use ramp VÌO2 responses to accurately assign constant-intensity exercise; and (iii) illustrate the technical and theoretical challenges with prescribing constant-intensity exercise solely on information acquired from ramp-incremental tests. Actual VÌO2 data collected during cycling exercise and VÌO2 kinetics modelling are presented to exemplify these concepts. Possible solutions to overcome these challenges are also presented to inform on appropriate intensity selection for individual-specific aerobic exercise prescription in both research and practical settings.
Palabras clave
VÌO2 kinetics; aerobic; aérobie; cinétique du VÌO2; consommation d'oxygène; critical power; endurance; exercice d'intensité croissante; exercise intensity; exercise prescription; exercise thresholds; graded exercise; intensité d'exercice; oxygen uptake; prescription d'exercice; puissance critique; seuils aérobies
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Consumo de Oxígeno
/
Ejercicio Físico
/
Prueba de Esfuerzo
Tipo de estudio:
Prognostic_studies
Límite:
Humans
Idioma:
En
Revista:
Appl Physiol Nutr Metab
Asunto de la revista:
CIENCIAS DA NUTRICAO
/
FISIOLOGIA
/
MEDICINA ESPORTIVA
/
METABOLISMO
Año:
2018
Tipo del documento:
Article
País de afiliación:
Canadá