Document Detail


Comparison of heart-rate and blood-pressure increases during isokinetic eccentric versus isometric exercise in older adults.
MedLine Citation:
PMID:  15223884     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
The authors compared heart-rate and blood-pressure responses to typical isometric (ISO) and isokinetic (90 degrees /s) eccentric (ECC) resistance-training protocols in older adults. Twenty healthy older adults (74 +/- 5 years old) performed randomly ordered ISO and isokinetic ECC exercise (3 sets of 10 repetitions) at a target intensity of 100 % of their peak ISO torque value. Heart rate and systolic (SBP) and diastolic (DBP) blood pressures were recorded continuously, and mean arterial pressure (MAP) and rate-pressure product (RPP) were calculated. ECC peak torque (139 +/- 33 N. m) was significantly greater than ISO peak torque (115 +/- 26 N. m; p <.001). All variables increased significantly (p <.001) during both ISO and ECC exercise. Changes in SBP, DBP, MAP, and RPP were significantly greater during ISO exercise than during ECC exercise (p <.001). Clinically, an isokinetic ECC exercise program enables older adults to work at the same torque output with less cardiovascular stress than ISO exercise.
Authors:
Deanna L Huggett; Ian D Elliott; Tom J Overend; Anthony A Vandervoort
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Publication Detail:
Type:  Clinical Trial; Comparative Study; Journal Article; Randomized Controlled Trial    
Journal Detail:
Title:  Journal of aging and physical activity     Volume:  12     ISSN:  1063-8652     ISO Abbreviation:  J Aging Phys Act     Publication Date:  2004 Apr 
Date Detail:
Created Date:  2004-06-29     Completed Date:  2004-07-22     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  9415639     Medline TA:  J Aging Phys Act     Country:  United States    
Other Details:
Languages:  eng     Pagination:  157-69     Citation Subset:  IM    
Affiliation:
School of Physical Therapy, University of Western Ontario, Lonton, ONT, Canada N6G 1H1.
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MeSH Terms
Descriptor/Qualifier:
Aged
Blood Pressure*
Exercise / physiology*
Heart Rate*
Humans
Isometric Contraction

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


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