| The effects of carbohydrate loading on muscle glycogen content and cycling performance. | |
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MedLine Citation:
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PMID: 7749423 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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This study compared the effects of supplementing the normal diets of 8 endurance-trained cyclists with additional carbohydrate (CHO), in the form of potato starch, for 3 days on muscle glycogen utilization and performance during a 3-hr cycle ride. On two occasions prior to the trial, the subjects ingested in random order either their normal CHO intake of 6.15 +/- 0.23 g/kg body mass/day or a high-CHO diet of 10.52 +/- 0.57 g/kg body mass/day. The trial consisted of 2 hr of cycling at approximately 75% of VO2peak with five 60-s sprints at 100% VO2peak at 20-min intervals, followed by a 60-min performance ride. Increasing CHO intake by 72 +/- 9% for 3 days prior to the trial elevated preexercise muscle glycogen contents, improved power output, and extended the distance covered in 1 hr. Muscle glycogen contents were similar at the end of the 3-hr trial, indicating a greater utilization of glycogen when subjects were CHO loaded, which may have been responsible for their improved cycling performance. |
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Authors:
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L H Rauch; I Rodger; G R Wilson; J D Belonje; S C Dennis; T D Noakes; J A Hawley |
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Publication Detail:
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Type: Clinical Trial; Journal Article; Randomized Controlled Trial; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: International journal of sport nutrition Volume: 5 ISSN: 1050-1606 ISO Abbreviation: Int J Sport Nutr Publication Date: 1995 Mar |
Date Detail:
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Created Date: 1995-06-20 Completed Date: 1995-06-20 Revised Date: 2006-11-15 |
Medline Journal Info:
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Nlm Unique ID: 9307702 Medline TA: Int J Sport Nutr Country: UNITED STATES |
Other Details:
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Languages: eng Pagination: 25-36 Citation Subset: IM |
Affiliation:
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Bioenergetics of Exercise Research Unit, Medical Research Council, Observatory, South Africa. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Adult Bicycling* Blood Glucose / metabolism Dietary Carbohydrates / administration & dosage, pharmacology* Glycogen / metabolism* Humans Lactates / blood Male Muscle, Skeletal / drug effects, metabolism* Solanum tuberosum Starch / administration & dosage, pharmacology |
| Chemical | |
Reg. No./Substance:
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0/Blood Glucose; 0/Dietary Carbohydrates; 0/Lactates; 9005-25-8/Starch; 9005-79-2/Glycogen |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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