| Effect of spontaneous recovery or retraining after hindlimb suspension on aerobic capacity. | |
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MedLine Citation:
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PMID: 3693209 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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The purpose of this study was to compare the effects of spontaneous recovery or recovery by treadmill training (180 min/day, 5 days/wk, 30 m/min for 8 wk) on maximal O2 uptake (VO2max), histochemical and biochemical muscular properties (soleus), of rats subsequent to 5 wk of hindlimb suspension. Spontaneous recovery reversed the 15% reduction in VO2max, whereas training posthypokinesia induced a 20% increase over control values. In the spontaneous recovery group, both citrate synthase and 3-hydroxyacyl-CoA dehydrogenase activities, decreased by hypokinesia (-40%), increased but remained 20% below the control level. In the training posthypokinesia group, an increase of these activities over control occurred (+50 and +20%, respectively). Recovery or training led to a 100% type I distribution in soleus muscle and to a recovery of all fibers' cross-sectional areas. In the spontaneous recovery group, capillaries per fiber, decreased by 46%, returned to the normal range. In the training posthypokinesia group, training induced an increase in capillaries per fiber above their control values (+23%). These results point to the plasticity of the muscle and indicate the necessity of a posthypokinesia training program for recovery of the total oxidative enzyme capacity. |
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Authors:
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D Desplanches; M H Mayet; B Semporé; J Frutoso; R Flandrois |
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Publication Detail:
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Type: Comparative Study; Journal Article |
Journal Detail:
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Title: Journal of applied physiology (Bethesda, Md. : 1985) Volume: 63 ISSN: 8750-7587 ISO Abbreviation: J. Appl. Physiol. Publication Date: 1987 Nov |
Date Detail:
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Created Date: 1988-01-27 Completed Date: 1988-01-27 Revised Date: 2006-11-15 |
Medline Journal Info:
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Nlm Unique ID: 8502536 Medline TA: J Appl Physiol Country: UNITED STATES |
Other Details:
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Languages: eng Pagination: 1739-43 Citation Subset: IM; S |
Affiliation:
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Unité Associée 0621, Centre National de la Recherche Scientifique, Laboratoire de Physiologie, Faculté de Médecine Grange-Blanche, Université Claude Bernard (Lyon I), France. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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3-Hydroxyacyl CoA Dehydrogenases
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metabolism Animals Capillaries Citrate (si)-Synthase / metabolism Female Histocytochemistry Immobilization* Muscles / anatomy & histology*, blood supply, enzymology Oxygen Consumption* Physical Conditioning, Animal Physical Fitness* Rats Rats, Inbred Strains |
| Chemical | |
Reg. No./Substance:
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EC 1.1.1.35/3-Hydroxyacyl CoA Dehydrogenases; EC 2.3.3.1/Citrate (si)-Synthase |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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