Document Detail


Cardiovascular responses to walking in patients with peripheral artery disease.
MedLine Citation:
PMID:  21502888     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
PURPOSES: The study's purposes were to assess the cardiovascular responses during constant-load walking and to identify predictors of this response in peripheral artery disease (PAD) patients.
METHODS: Seventy-nine patients with PAD performed a constant-load treadmill test (2 mph, 0% grade). During the test, systolic blood pressure (BP), diastolic BP, and HR were obtained at the fourth minute to the last minute of exercise. Patients were also characterized by demographic measures, cardiovascular risk factors, baseline exercise performance, and vascular measures.
RESULTS: During constant-load walking, there was a significant increase (P < 0.01) in systolic BP (+12 ± 10 mm Hg), diastolic BP (+6 ± 9 mm Hg), and HR (+5 ± 5 bpm). The HR responses were negatively correlated with the ischemic window (r = -0.23, P < 0.05), expressed as an area under the curve of the resting ankle systolic BP and its recovery from a maximal graded treadmill test, and positively correlated with the HR during the first minute of recovery from the maximal graded treadmill test (r = 0.27, P < 0.05). The increase in cardiovascular variables during constant-load walking was greater in subjects with a higher body mass index and in men (P < 0.05).
CONCLUSIONS: Patients with PAD had an increased cardiovascular response during constant-load walking, and these responses were greater in obese patients and in men. The clinical implication is that PAD patients engaged in walking training programs, particularly men and those with obesity, require frequent assessment of cardiovascular parameters to avoid exaggerated increases in BP and HR during constant-load walking.
Authors:
Raphael Mendes Ritti-Dias; Annelise Lins Meneses; Donald E Parker; Polly S Montgomery; Aman Khurana; Andrew W Gardner
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Publication Detail:
Type:  Journal Article; Research Support, N.I.H., Extramural; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Medicine and science in sports and exercise     Volume:  43     ISSN:  1530-0315     ISO Abbreviation:  Med Sci Sports Exerc     Publication Date:  2011 Nov 
Date Detail:
Created Date:  2011-10-20     Completed Date:  2012-03-05     Revised Date:  2013-08-19    
Medline Journal Info:
Nlm Unique ID:  8005433     Medline TA:  Med Sci Sports Exerc     Country:  United States    
Other Details:
Languages:  eng     Pagination:  2017-23     Citation Subset:  IM; S    
Affiliation:
School of Physical Education, Pernambuco University, Pernambuco, Brazil.
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MeSH Terms
Descriptor/Qualifier:
Aged
Cardiovascular System / metabolism*,  physiopathology
Elasticity / physiology
Exercise Test / methods
Humans
Male
Middle Aged
Patients*
Peripheral Arterial Disease / drug therapy,  physiopathology*
Walking / physiology*
Grant Support
ID/Acronym/Agency:
M01-RR-14467/RR/NCRR NIH HHS; R01 AG024296/AG/NIA NIH HHS; R01-AG-24296/AG/NIA NIH HHS
Comments/Corrections

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