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Titre du document / Document title

Critical Power: Implications for Determination of VO2max and Exercise Tolerance

Auteur(s) / Author(s)

JONES Andrew M. (1) ; VANHATALO Anni (1) ; BURNLEY Mark (2) ; MORTON R. Hugh (3) ; POOLE David C. (4) ;

Affiliation(s) du ou des auteurs / Author(s) Affiliation(s)

(1) School of Sport and Health Sciences, St. Luke's Campus, University of Exeter, Exeter, Devon, England, ROYAUME-UNI
(2) Department of Sport and Exercise Sciences, Aberystwyth University, Aberystwyth, Ceredigion, Wales, ROYAUME-UNI
(3) Institute of Food Nutrition and Human Health, Massey University, Palmerston North, NOUVELLE-ZELANDE
(4) Departments of Kinesiology, Anatomy and Physiology, Kansas State University, Manhattan, KS, ETATS-UNIS

Résumé / Abstract

For high-intensity muscular exercise, the time-to-exhaustion (t) increases as a predictable and hyperbolic function of decreasing power (P) or velocity (V). This relationship is highly conserved across diverse species and different modes of exercise and is well described by two parameters: the "critical power" (CP or CV), which is the asymptote for power or velocity, and the curvature constant (W') of the relationship such that t = W'/(P - CP). CP represents the highest rate of energy transduction (oxidative ATP production, VO2) that can be sustained without continuously drawing on the energy store W' (composed in part of anaerobic energy sources and expressed in kilojoules). The limit of tolerance (time t) occurs when W' is depleted. The CP concept constitutes a practical framework in which to explore mechanisms of fatigue and help resolve crucial questions regarding the plasticity of exercise performance and muscular systems physiology. This brief review presents the practical and theoretical foundations for the CP concept, explores rigorous alternative mathematical approaches, and highlights exciting new evidence regarding its mechanistic bases and its broad applicability to human athletic performance.

Revue / Journal Title

Medicine and science in sports and exercise    ISSN  0195-9131   CODEN MSPEDA 

Source / Source

2010, vol. 42, no10, pp. 1876-1890 [15 page(s) (article)] (84 ref.)

Langue / Language

Anglais

Editeur / Publisher

Lippincott Williams & Wilkins, Hagerstown, MD, ETATS-UNIS  (1980) (Revue)

Mots-clés anglais / English Keywords

Sport

;

Human

;

Magnetic resonance

;

Athletics

;

Kinetics

;

Intensity

;

Fatigue

;

Tolerance

;

Physical exercise

;

Power

;

Mots-clés français / French Keywords

Sport

;

Homme

;

Résonance magnétique

;

Athlétisme

;

Cinétique

;

Intensité

;

Fatigue

;

Tolérance

;

Exercice physique

;

Puissance

;

Mots-clés espagnols / Spanish Keywords

Deporte

;

Hombre

;

Resonancia magnética

;

Atletismo

;

Cinética

;

Intensidad

;

Fatiga

;

Tolerancia

;

Ejercicio físico

;

Potencia

;

Mots-clés d'auteur / Author Keywords

FATIGUE

;

EXERCISE INTENSITY DOMAINS

;

VO2 KINETICS

;

ANAEROBIC CAPACITY

;

ATHLETIC PERFORMANCE

;

MAGNETIC RESONANCE SPECTROSCOPY

;

Localisation / Location

INIST-CNRS, Cote INIST : 17103, 35400019321117.0110

Nº notice refdoc (ud4) : 23253603



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