Document Detail


Concentric adaptation of the left ventricle in response to controlled upper body exercise training.
MedLine Citation:
PMID:  12391094     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Upper body exercise has many applications to the rehabilitation and maintenance of cardiovascular health of individuals who are unable to exercise their lower body. The hemodynamic loads of upper body aerobic exercise are characterized by relatively high blood pressure and relatively low venous return. It is not clear how the left ventricle adapts to the specific hemodynamic loads associated with this form of exercise training. The purpose of this study was to measure left ventricular structure and function in previously sedentary men by using echocardiography before and after 12 wk of aerobic arm-crank exercise training (n = 22) or a time control period (n = 22). Arm-crank peak oxygen consumption (in ml x kg(-1) x min(-1)) increased by 16% (P < 0.05) after training, and significant differences (P < 0.05) were found in wall thickness (from 0.86 to 0.99 cm) but not in left ventricular internal dimension in diastole or systole. This suggested a concentric pattern of left ventricular hypertrophy that persisted after scaling to changes in anthropometric characteristics. No differences (P < 0.05) were found for any measurements of resting left ventricular function. We conclude that upper body aerobic exercise training results in a specific left ventricular adaptation that is characterized by increased left ventricular wall thickness but no change in chamber dimension.
Authors:
Phillip E Gates; Keith P George; Ian G Campbell
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Publication Detail:
Type:  Journal Article     Date:  2002-10-18
Journal Detail:
Title:  Journal of applied physiology (Bethesda, Md. : 1985)     Volume:  94     ISSN:  8750-7587     ISO Abbreviation:  J. Appl. Physiol.     Publication Date:  2003 Feb 
Date Detail:
Created Date:  2003-01-17     Completed Date:  2003-07-21     Revised Date:  2013-09-26    
Medline Journal Info:
Nlm Unique ID:  8502536     Medline TA:  J Appl Physiol (1985)     Country:  United States    
Other Details:
Languages:  eng     Pagination:  549-54     Citation Subset:  IM    
Affiliation:
Department of Exercise and Sport Science, Alsager Faculty, Manchester Metropolitan University, Cheshire ST7 2HL, United Kingdom. phillip@spot.colorado.edu
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MeSH Terms
Descriptor/Qualifier:
Adaptation, Physiological*
Adult
Anthropometry
Arm / physiology*
Cardiovascular Physiological Phenomena
Echocardiography
Exercise / physiology*
Humans
Life Style
Male
Oxygen Consumption
Physical Education and Training*
Ventricular Function, Left*

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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