| Carbohydrate drinks and cycling performance. | |
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MedLine Citation:
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PMID: 7967586 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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We compared the effects of similarly tasting orange flavored drinks containing 0% (P), 6.4% (E1), and 10% (E2) carbohydrate (CHO) using 12 well-trained cyclists (VO2max = 5.0 l/min-1) on metabolic responses to exercise (EX) and a sprint type performance ride (PR). Each subject completed 3 separate 2 h EX bouts at 65% VO2max followed by a PR identified as the time in sec to complete 500 revolutions at a constant belt resistance of 29.4 N (ANOVA*). The CHO feedings or placebo of 3 ml/kg body weight were given double blind and counter-balanced at 0 min and every 20 min thereafter during EX. Blood samples were drawn and core temperature (Tr) was recorded at 0, 30, 60, 90, and 120 min of EX and 1 min post PR. Blood samples were analyzed for glucose (G) and lactate [LA-]. Blood G at 0 min were similar; however, at 120 min, G was 3.96 mM for P*, 4.57 mM for E1, and 4.77 mM for E2. Blood [LA-] remained similar throughout EX averaging (P, 2.6 mM; E1, 2.9 mM; E2, 2.5 mM). Tr at 120 min was also similar (P, 38.5 degrees C; E1, 38.6 degrees C; E2, 38.3 degrees C). Mean PR times for P(264.4 s)**, E1 (255.3 s)*, E2 (252.4 s)* indicate consumption of a CHO drink during EX improves PR. Furthermore, a 10% CHO drink improves PR more than a 6.4% CHO drink. |
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Authors:
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D W Bacharach; S P von Duvillard; K W Rundell; J Meng; M R Cring; L Szmedra; J M Castle |
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Publication Detail:
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Type: Comparative Study; Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: The Journal of sports medicine and physical fitness Volume: 34 ISSN: 0022-4707 ISO Abbreviation: J Sports Med Phys Fitness Publication Date: 1994 Jun |
Date Detail:
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Created Date: 1994-12-23 Completed Date: 1994-12-23 Revised Date: 2006-11-15 |
Medline Journal Info:
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Nlm Unique ID: 0376337 Medline TA: J Sports Med Phys Fitness Country: ITALY |
Other Details:
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Languages: eng Pagination: 161-8 Citation Subset: IM |
Affiliation:
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Human Performance Laboratory, Syracuse University, NY. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Adolescent Adult Beverages Bicycling / physiology* Blood Glucose / metabolism Dietary Carbohydrates* Double-Blind Method Exercise / physiology* Humans Male Oxygen Consumption / drug effects Rehydration Solutions / pharmacology* |
| Chemical | |
Reg. No./Substance:
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0/Blood Glucose; 0/Dietary Carbohydrates; 0/Rehydration Solutions |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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