| Systemic effects of ingesting varying amounts of a commercial carbohydrate beverage postexercise. | |
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MedLine Citation:
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PMID: 8077576 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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OBJECTIVE: Although the role of postexercise carbohydrate intake in the replenishment of muscle glycogen is well established, large amounts of carbohydrate may affect other systems which are recovering from exercise as well. METHODS: We varied the timing and amount of a commercial glucose polymer/fructose (CHO) beverage ingested postexercise in 2 groups of 8 normotensive men following 1 hour of cycling exercise. In Study A the subjects ingested 1 L of a 200 g CHO solution or 1 L of water (W) immediately postexercise. The participants in Study B consumed 1 L of a 1.5 g/kg CHO solution, or W, immediately and 2 hours postexercise. RESULTS: Recovery systolic blood pressure was elevated after 200 g CHO as compared to water, but not after 1.5 g/kg CHO. Diastolic blood pressure was decreased, while heart rate, insulin and glucose increased following both doses of CHO. Despite the potassium (K) content of the beverages, serum K decreased in Study A and B, while a trend was noted following CHO for decreased urinary K excretion at 2 hours and for increased sodium excretion at 4 hours in Study B. Post CHO aldosterone declined more rapidly than after W, and urine volumes were decreased compared to W in both studies 2 hours after CHO. CONCLUSIONS: We speculate that hyperinsulinemia contributed to the rapid decline in K and aldosterone by creating a flux of K to the intracellular space. It appears that CHO ingestion postexercise results in systemic effects that are related to the amount and timing of CHO consumed. |
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Authors:
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B W Glace; G W Gleim; P M Zabetakis; J A Nicholas |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Journal of the American College of Nutrition Volume: 13 ISSN: 0731-5724 ISO Abbreviation: J Am Coll Nutr Publication Date: 1994 Jun |
Date Detail:
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Created Date: 1994-09-30 Completed Date: 1994-09-30 Revised Date: 2008-06-23 |
Medline Journal Info:
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Nlm Unique ID: 8215879 Medline TA: J Am Coll Nutr Country: UNITED STATES |
Other Details:
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Languages: eng Pagination: 268-76 Citation Subset: IM |
Affiliation:
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Nicolas Institute of Sports Medicine, Lenox Hill Hospital, New York, NY 10021. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Adult Aldosterone / blood Beverages* Blood Glucose / metabolism Blood Pressure / drug effects Dietary Carbohydrates / administration & dosage, pharmacology* Exercise* Fructose / administration & dosage, pharmacology Glucose / administration & dosage, pharmacology Heart Rate / drug effects Humans Insulin / blood Male Osmolar Concentration Oxygen Consumption Polymers Potassium / blood, urine Urine Water-Electrolyte Balance / drug effects |
| Chemical | |
Reg. No./Substance:
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0/Blood Glucose; 0/Dietary Carbohydrates; 0/Polymers; 11061-68-0/Insulin; 30237-26-4/Fructose; 50-99-7/Glucose; 52-39-1/Aldosterone; 7440-09-7/Potassium |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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