| Effects of post-exercise supplements on glycogen repletion in skeletal muscle. | |
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MedLine Citation:
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PMID: 12447829 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Post-exercise carbohydrate supplementation has been routinely used to enhance glycogen concentrations in skeletal muscle, particularly during multiple-day athletic events. Consumption of protein hydrolysates mixed with carbohydrate supplements during the post-exercise period may increase insulin response and cause glycogen repletion in skeletal muscle. A group of Alaskan sled dogs were selected to examine post-exercise supplementation in a paired crossover study design. The dogs were subjected to the same exercise regimen and provided one of three treatments-water, glucose polymers, or glucose polymers with protein hydrolysates-over a 2-month period. Parameters tested at various post-exercise time points included plasma insulin, glucagon and glucose concentrations, and skeletal muscle glycogen content to gain a better understanding of glucose metabolism and glycogen repletion. The results showed an enhanced insulin, glucose, and glucagon response immediately after supplementation and significantly increased glycogen concentrations in skeletal muscle within 24 hours when dogs received either of the glucose-containing supplements compared with water alone. There were no differences in the plasma parameters or skeletal muscle glycogen stores in dogs provided the glucose polymers alone or the glucose polymers plus protein hydrolysates. Thus, post-exercise carbohydrate supplementation increased muscle glycogen repletion, but inclusion of protein hydrolysates in the supplements provided no additional benefits. |
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Authors:
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Joseph J Wakshlag; Kimberly A Snedden; Annette M Otis; Christopher A Kennedy; Todd P Kennett; Janet M Scarlett; Francis A Kallfelz; Gary M Davenport; Arleigh J Reynolds; Gregory A Reinhart |
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Publication Detail:
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Type: Clinical Trial; Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: Veterinary therapeutics : research in applied veterinary medicine Volume: 3 ISSN: 1528-3593 ISO Abbreviation: Vet. Ther. Publication Date: 2002 |
Date Detail:
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Created Date: 2002-11-26 Completed Date: 2003-01-10 Revised Date: 2006-11-15 |
Medline Journal Info:
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Nlm Unique ID: 100936368 Medline TA: Vet Ther Country: United States |
Other Details:
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Languages: eng Pagination: 226-34 Citation Subset: IM |
Affiliation:
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Cornell University, College of Veterinary Medicine, Department of Clinical Sciences, Ithaca, NY 14853, USA. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Animals Blood Glucose / drug effects Dietary Carbohydrates / administration & dosage, pharmacology* Dietary Proteins / administration & dosage, pharmacology* Dietary Supplements Dogs Drug Administration Schedule Female Glucagon / blood Glucose / administration & dosage, pharmacology Glycogen / analysis, metabolism* Insulin / blood Male Motor Activity / physiology* Muscle, Skeletal / drug effects*, metabolism* |
| Chemical | |
Reg. No./Substance:
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0/Blood Glucose; 0/Dietary Carbohydrates; 0/Dietary Proteins; 11061-68-0/Insulin; 50-99-7/Glucose; 9005-79-2/Glycogen; 9007-92-5/Glucagon |
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