| Elevated central venous pressure: a consequence of exercise training-induced hypervolemia? | |
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MedLine Citation:
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PMID: 1996713 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Resting blood volumes and arterial and central venous pressures (CVP) were measured in 14 men before and after exercise training to determine whether training-induced hypervolemia is accompanied by a change in total vascular capacitance. In addition, resting levels of plasma arginine vasopressin (AVP), atrial natriuretic peptide (ANP), aldosterone (Ald), and norepinephrine (NE) were measured. The same measurements were conducted in seven subjects who did not undergo exercise and acted as controls. Exercise training consisted of 10 wk of controlled cycle exercise for 30 min/day, 4 days/wk at 75-80% of maximal O2 uptake (VO2max). A training effect was verified by a 20% increase in VO2max, a resting bradycardia, and a 9% increase in blood volume. Mean arterial blood pressure was unaltered by exercise training, but resting CVP increased by 16% (P less than 0.05). The percent change in blood volume from before to after training was linearly related to the percent change in CVP (r = 0.903, P less than 0.05). As a consequence of elevations in both blood volume and CVP, the volume-to-pressure ratio was unchanged after exercise training. Plasma AVP, ANP, Ald, and NE were unaltered. Our results indicate that elevated CVP is a consequence of training-induced hypervolemia without alteration in total effective venous capacitance. |
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Authors:
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V A Convertino; G W Mack; E R Nadel |
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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: 260 ISSN: 0002-9513 ISO Abbreviation: Am. J. Physiol. Publication Date: 1991 Feb |
Date Detail:
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Created Date: 1991-03-22 Completed Date: 1991-03-22 Revised Date: 2004-11-17 |
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: R273-7 Citation Subset: IM; S |
Affiliation:
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Biomedical Operations and Research Office, National Aeronautics and Space Administration, Kennedy Space Center, Florida 32899. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Adult Blood Pressure Blood Volume* Central Venous Pressure* Humans Male Oxygen Consumption Physical Education and Training* Physical Endurance |
| Investigator | |
Investigator/Affiliation:
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V A Convertino / KSC |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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