| Increased serum growth hormone and somatic growth in exercising adult hamsters. | |
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MedLine Citation:
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PMID: 665764 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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In freely feeding adult hamsters, voluntary exercise induces accelerated somatic growth and increased food consumption that last through several days of retirement. We examined the effects of exercise on serum concentrations of growth hormone (GH) and insulin during ad libitum or restricted intake of food. Serum insulin and GH concentrations were measured by radioimmunoassays in exercising, retired, or sedentary hamsters during ad libitum or restricted intake of food. Linear growth was delayed in food-restricted, exercising hamsters until they were retired and unlimited food consumption was allowed. Serum GH concentrations were increased during exercise and after retirement; serum insulin concentrations were increased only after retirement during both dietary regimes. In food-restricted hamsters, endocrine changes were noted after 4 h of feeding but not after a 14-h fast. We conclude that 1) in adult hamsters voluntary exercise leads to increased secretion of GH even when ingested nutrients are insufficient to support increased growth, and 2) increased secretion of insulin is not related directly to exercise. |
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Authors:
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K T Borer; R P Kelch |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: The American journal of physiology Volume: 234 ISSN: 0002-9513 ISO Abbreviation: Am. J. Physiol. Publication Date: 1978 Jun |
Date Detail:
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Created Date: 1978-08-14 Completed Date: 1978-08-14 Revised Date: 2008-11-21 |
Medline Journal Info:
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Nlm Unique ID: 0370511 Medline TA: Am J Physiol Country: UNITED STATES |
Other Details:
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Languages: eng Pagination: E611-6 Citation Subset: IM |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Animals Body Weight Cricetinae Energy Intake Fasting Female Growth* Growth Hormone / blood* Humans Insulin / blood Mesocricetus / growth & development Physical Exertion* Rats Species Specificity |
| Chemical | |
Reg. No./Substance:
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11061-68-0/Insulin; 9002-72-6/Growth Hormone |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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