| Critical power: implications for determination of V˙O2max and exercise tolerance. | |
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MedLine Citation:
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PMID: 20195180 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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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, V˙O2) 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. |
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Authors:
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Andrew M Jones; Anni Vanhatalo; Mark Burnley; R Hugh Morton; David C Poole |
Publication Detail:
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Type: Journal Article; Review |
Journal Detail:
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Title: Medicine and science in sports and exercise Volume: 42 ISSN: 1530-0315 ISO Abbreviation: Med Sci Sports Exerc Publication Date: 2010 Oct |
Date Detail:
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Created Date: 2010-09-27 Completed Date: 2011-01-13 Revised Date: 2011-03-22 |
Medline Journal Info:
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Nlm Unique ID: 8005433 Medline TA: Med Sci Sports Exerc Country: United States |
Other Details:
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Languages: eng Pagination: 1876-90 Citation Subset: IM; S |
Affiliation:
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School of Sport and Health Sciences, University of Exeter, Exeter, Devon, England. a.m.jones@exeter.ac.uk |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Exercise
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physiology* Exercise Tolerance / physiology* Female Humans Models, Biological Muscle Fatigue / physiology Oxygen Consumption / physiology* Pulmonary Ventilation / physiology |
| Comments/Corrections | |
Comment In:
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Med Sci Sports Exerc. 2011 Mar;43(3):552; author reply 553
[PMID:
21325918
]
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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