| Muscle pump and central command during recovery from exercise in humans. | |
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MedLine Citation:
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PMID: 10517779 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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We sought to determine the relative contributions of cessation of skeletal muscle pumping and withdrawal of central command to the rapid decrease in arterial pressure during recovery from exercise. Twelve healthy volunteers underwent three exercise sessions, each consisting of a warm-up, 3 min of cycling at 60% of maximal heart rate, and 5 min of one of the following recovery modes: seated (inactive), loadless pedaling (active), and passive cycling. Mean arterial pressure (MAP), cardiac output, thoracic impedance, and heart rate were measured. When measured 15 s after exercise, MAP decreased less (P < 0.05) during the active (-3 +/- 1 mmHg) and passive (-6 +/- 1 mmHg) recovery modes than during inactive (-18 +/- 2 mmHg) recovery. These differences in MAP persisted for the first 4 min of recovery from exercise. Significant maintenance of central blood volume (thoracic impedance), stroke volume, and cardiac output paralleled the maintenance of MAP during active and passive conditions during 5 min of recovery. These data indicate that engaging the skeletal muscle pump by loadless or passive pedaling helps maintain MAP during recovery from submaximal exercise. The lack of differences between loadless and passive pedaling suggests that cessation of central command is not as important. |
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Authors:
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R Carter; D E Watenpaugh; W L Wasmund; S L Wasmund; M L Smith |
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Publication Detail:
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Type: Journal Article; Research Support, U.S. Gov't, P.H.S. |
Journal Detail:
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Title: Journal of applied physiology (Bethesda, Md. : 1985) Volume: 87 ISSN: 8750-7587 ISO Abbreviation: J. Appl. Physiol. Publication Date: 1999 Oct |
Date Detail:
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Created Date: 1999-11-17 Completed Date: 1999-11-17 Revised Date: 2007-11-14 |
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: 1463-9 Citation Subset: IM; S |
Affiliation:
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Department of Integrative Physiology, University of North Texas Health Science Center, Fort Worth, Texas 76107, USA. rcarter@hsc.unt.edu |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Adult Bicycling / physiology Blood Pressure / physiology* Brain / physiology* Cardiac Output / physiology Exercise / physiology* Female Heart Rate / physiology Humans Male Muscle, Skeletal / physiology* Stroke Volume / physiology Vascular Resistance / physiology |
| Grant Support | |
ID/Acronym/Agency:
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HL-49266/HL/NHLBI NIH HHS |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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