| Carbohydrate and exercise performance: the role of multiple transportable carbohydrates. | |
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MedLine Citation:
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PMID: 20574242 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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PURPOSE OF REVIEW: Carbohydrate feeding has been shown to be ergogenic, but recently substantial advances have been made in optimizing the guidelines for carbohydrate intake during prolonged exercise. RECENT FINDINGS: It was found that limitations to carbohydrate oxidation were in the absorptive process most likely because of a saturation of carbohydrate transporters. By using a combination of carbohydrates that use different intestinal transporters for absorption it was shown that carbohydrate delivery and oxidation could be increased. Studies demonstrated increases in exogenous carbohydrate oxidation rates of up to 65% of glucose: fructose compared with glucose only. Exogenous carbohydrate oxidation rates reach values of 1.75 g/min whereas previously it was thought that 1 g/min was the absolute maximum. The increased carbohydrate oxidation with multiple transportable carbohydrates was accompanied by increased fluid delivery and improved oxidation efficiency, and thus the likelihood of gastrointestinal distress may be diminished. Studies also demonstrated reduced fatigue and improved exercise performance with multiple transportable carbohydrates compared with a single carbohydrate. SUMMARY: Multiple transportable carbohydrates, ingested at high rates, can be beneficial during endurance sports in which the duration of exercise is 3 h or more. |
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Authors:
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Asker E Jeukendrup |
Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't; Review |
Journal Detail:
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Title: Current opinion in clinical nutrition and metabolic care Volume: 13 ISSN: 1535-3885 ISO Abbreviation: Curr Opin Clin Nutr Metab Care Publication Date: 2010 Jul |
Date Detail:
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Created Date: 2010-06-24 Completed Date: 2011-01-05 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 9804399 Medline TA: Curr Opin Clin Nutr Metab Care Country: England |
Other Details:
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Languages: eng Pagination: 452-7 Citation Subset: IM |
Affiliation:
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School of Sport and Exercise Sciences, University of Birmingham, Edgbaston, Birmingham, UK. A.E.Jeukendrup@bham.ac.uk |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Animals Biological Transport Dietary Sucrose / administration & dosage, metabolism*, pharmacology* Exercise / physiology* Fatigue / prevention & control* Fructose / metabolism Glucose / metabolism Humans Intestinal Absorption / drug effects Oxidation-Reduction Physical Endurance / drug effects* |
| Grant Support | |
ID/Acronym/Agency:
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//Wellcome Trust |
| Chemical | |
Reg. No./Substance:
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0/Dietary Sucrose; 30237-26-4/Fructose; 50-99-7/Glucose |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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