| Quantification of anaerobic energy production during intense exercise. | |
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MedLine Citation:
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PMID: 9475643 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Anaerobic energy production during supramaximal exercise has been estimated from muscle metabolic changes. Based on such measurements the anaerobic energy production was determined to be 63 and 189 mmol ATP x kg(-1) d.w. for 60 and 142 s of exhaustive cycling exercise, respectively. These estimations do not, however, include release of lactate from the exercising muscles. Furthermore, the anaerobic production cannot be related to the work performed since the muscle biopsy sample may not be representative for the muscles involved in the exercise, and the total anaerobic energy production during whole body exercise cannot be determined because the mass of the muscles used is unknown. When a single muscle is exercised, the problems are minimized. With a one-legged knee-extensor exercise model, which uses a defined muscle mass, the anaerobic energy production has been estimated to be 370 mmol ATP x kg(-1) d.w. for a 192-s exhaustive exercise period. Estimated pulmonary oxygen deficit based on an energy demand extrapolated from a linear relationship between exercise intensity and oxygen uptake at submaximal exercise does not appear to represent the anaerobic energy production during whole body exercise. |
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Authors:
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J Bangsbo |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't; Review |
Journal Detail:
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Title: Medicine and science in sports and exercise Volume: 30 ISSN: 0195-9131 ISO Abbreviation: Med Sci Sports Exerc Publication Date: 1998 Jan |
Date Detail:
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Created Date: 1998-03-27 Completed Date: 1998-03-27 Revised Date: 2006-11-15 |
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: 47-52 Citation Subset: IM; S |
Affiliation:
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Copenhagen Muscle Research Centre, August Krogh Institute, University of Copenhagen, Denmark. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Adenosine Triphosphate
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metabolism Anaerobic Threshold / physiology* Energy Metabolism Exercise / physiology* Exercise Test Humans Knee Joint / physiology Lactic Acid / analysis, metabolism Oxygen Consumption Phosphocreatine / analysis, metabolism Sensitivity and Specificity |
| Chemical | |
Reg. No./Substance:
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50-21-5/Lactic Acid; 56-65-5/Adenosine Triphosphate; 67-07-2/Phosphocreatine |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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