| Glycogen depletion patterns in the muscle of standardbred trotters after exercise of varying intensities and durations. | |
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MedLine Citation:
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PMID: 3803363 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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The glycogen depletion patterns in the gluteus muscle of Standardbred horses were studied under different trotting intensities. After racing significant glycogen depletion was found in all Type I and IIA fibres and in a varying percentage of Type IIB fibres, depending on the individual horse. When horses performed exercise over a short distance (5 to 8 km) at three different speeds, glycogen depletion was difficult to detect for the faster speeds (10 and 8 m/sec) but notably involved a major proportion of Type I fibres at the slowest speed (6 m/sec). When exercise was prolonged over a greater distance a larger proportion of Type IIA fibres were depleted at faster speeds (8 m/sec) than at slower speeds over the same distance. However, when slow trotting was continued over even greater distances, a gradual increase in the percentage of glycogen depleted Type IIA fibres was noticed. Very significant glycogen depletion in all three fibre types was seen in all horses where a near maximal exercise tolerance test was performed 3 h after the longest and slowest exercise run. In a further study of glycogen depletion, during a near maximal exercise tolerance test on a graded treadmill with consecutively increasing velocity, depletion was seen in a proportion of all three fibre types with the highest proportion being Type I and the lowest Type IIB. |
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Authors:
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S Valberg |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: Equine veterinary journal Volume: 18 ISSN: 0425-1644 ISO Abbreviation: Equine Vet. J. Publication Date: 1986 Nov |
Date Detail:
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Created Date: 1987-03-17 Completed Date: 1987-03-17 Revised Date: 2008-11-21 |
Medline Journal Info:
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Nlm Unique ID: 0173320 Medline TA: Equine Vet J Country: ENGLAND |
Other Details:
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Languages: eng Pagination: 479-84 Citation Subset: IM; S |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Animals Female Glycogen / metabolism* Horses / metabolism* Male Muscles / metabolism* Physical Exertion* |
| Chemical | |
Reg. No./Substance:
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9005-79-2/Glycogen |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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