| Carbohydrate ingestion during exercise: liquid vs solid feedings. | |
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MedLine Citation:
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PMID: 8371658 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Six trained men were studied during 2 h of exercise at 65% VO2max to examine the influence of the physical form of carbohydrate supplementation on blood glucose and insulin responses. Three exercise tests were performed in randomized order, at least 1 wk apart. Subjects ingested 25 g of carbohydrate or 500 ml of a sweet placebo (CON) at 0, 30, 60, and 90 min of exercise. Carbohydrate was ingested as 500 ml of a 5% rice-based liquid (L-CHO) or as a 31-g food bar (S-CHO). No differences in oxygen uptake, respiratory exchange ratio, or heart rate were observed between trials. Blood glucose levels were higher (P < 0.05) throughout exercise when carbohydrate was ingested, compared with CON. No differences in blood glucose during exercise were observed between L-CHO and S-CHO. Plasma insulin levels were higher (P < 0.05) after 120 min of exercise when carbohydrate was ingested. The results of this study indicate that carbohydrate supplements with differing physical form (liquid vs solid) but equal carbohydrate content produce similar blood glucose and insulin responses during exercise. |
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Authors:
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W L Mason; G McConell; M Hargreaves |
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Publication Detail:
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Type: Clinical Trial; Comparative Study; Journal Article; Randomized Controlled Trial; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: Medicine and science in sports and exercise Volume: 25 ISSN: 0195-9131 ISO Abbreviation: Med Sci Sports Exerc Publication Date: 1993 Aug |
Date Detail:
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Created Date: 1993-10-14 Completed Date: 1993-10-14 Revised Date: 2008-11-21 |
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: 966-9 Citation Subset: IM; S |
Affiliation:
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Exercise Metabolism Unit, Victoria University of Technology, Footscray, Australia. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Adult Blood Glucose / analysis Dietary Carbohydrates / administration & dosage*, metabolism* Exercise Test Food Humans Insulin / blood Male Physical Exertion / physiology* Placebos Solutions Time Factors |
| Chemical | |
Reg. No./Substance:
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0/Blood Glucose; 0/Dietary Carbohydrates; 0/Placebos; 0/Solutions; 11061-68-0/Insulin |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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