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The Effect of Exercise Training on Mental Stress-Induced Silent Ischemia

This study has been completed.
Information provided by:
VA Office of Research and Development Identifier:
First received: July 3, 2001
Last updated: January 20, 2009
Last verified: June 2001
Coronary artery disease (CAD) remains the leading cause of death in the elderly. Silent myocardial ischemia (SI) is a manifestation of CAD in which there is a transient alteration in myocardial perfusion, function, and/or electrical activity not accompanied by chest pain. Mental and emotional stress, in particular hostility and anger are potent inducers of SI, Individuals with SI are at a 3-5 fold higher risk for the development of angina, myocardial infarction and death than subjects without SI.

Condition Intervention
Myocardial Ischemia Behavioral: exercise

Study Type: Interventional
Study Design: Allocation: Randomized
Official Title: The Effect of Exercise Training on Mental Stress-Induced Silent Ischemia

Resource links provided by NLM:

Further study details as provided by VA Office of Research and Development:

Study Start Date: April 1997
Estimated Study Completion Date: March 2000
Detailed Description:
The hypothesis of this study is that older individuals with occult cad, mental stress/ emotional arousal (anger) increases sympathetic nervous system activity resulting in vasoconstriction thereby eliciting transient episodes of SI. Therefore an aerobic exercise intervention that reduces the response to anger/hostility and improves vascular compliance will decrease the ischemic burden in SI patients. The specific objectives are: To determine if non-smoking older individuals with exercise-induced SI have increased vasoreactivity (blood pressure, heart rate) responses to the laboratory presentation of mental stressors, decreased vascular compliance and brachial artery endothelial reactivity compared to matched non-ischemic controls; 2) To perform a randomized clinical trial that will examine the effects of 9 months of aerobic exercise training versus usual care on vasoreactivity, vascular compliance and ischemic burden on Holter monitor. Older individuals without a history of overt CAD will be recruited and evaluated for the presence of exercise-induced SI. Baseline cross-sectional comparisons of vasoreactivity and cardiovascular function will be performed between those with SI and non-ischemic controls. The individuals with SI will be enrolled in a randomized clinical trial of exercise vs usual care. Exercise treadmill testing with measurement of maximal aerobic capacity will be used to determine fitness. Vasoactivity will be quantified during a mental stress test with real time 2d echo imaging. Vascular function will be assessed using high frequency ultrasound measurements of flow-mediated brachial artery endothelial reactivity.

Ages Eligible for Study:   60 Years and older   (Adult, Senior)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   Yes
Older individuals without a history of overt CAD.
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Please refer to this study by its identifier: NCT00018252

United States, Maryland
VA Maryland Health Care System
Baltimore, Maryland, United States, 21201
Sponsors and Collaborators
VA Office of Research and Development
  More Information Identifier: NCT00018252     History of Changes
Other Study ID Numbers: AGCG-003-96F
Study First Received: July 3, 2001
Last Updated: January 20, 2009

Additional relevant MeSH terms:
Myocardial Ischemia
Coronary Artery Disease
Stress, Psychological
Pathologic Processes
Heart Diseases
Cardiovascular Diseases
Vascular Diseases
Coronary Disease
Arterial Occlusive Diseases
Behavioral Symptoms processed this record on September 21, 2017