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| Tracking Information | |||||||||
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| First Received Date ICMJE | July 6, 2006 | ||||||||
| Last Updated Date | February 10, 2009 | ||||||||
| Start Date ICMJE | November 2006 | ||||||||
| Estimated Primary Completion Date | April 2011 (final data collection date for primary outcome measure) | ||||||||
| Current Primary Outcome Measures ICMJE |
Growth rate of AAAs [ Time Frame: Measured at Year 3 ] [ Designated as safety issue: No ] | ||||||||
| Original Primary Outcome Measures ICMJE |
Growth rate of AAAs (measured at Year 3) | ||||||||
| Change History | Complete list of historical versions of study NCT00349947 on ClinicalTrials.gov Archive Site | ||||||||
| Current Secondary Outcome Measures ICMJE | |||||||||
| Original Secondary Outcome Measures ICMJE | |||||||||
| Descriptive Information | |||||||||
| Brief Title ICMJE | Exercise Therapy to Treat Adults With Abdominal Aortic Aneurysms | ||||||||
| Official Title ICMJE | Abdominal Aortic Aneurysms: Simple Treatment or Prevention (AAA: STOP) | ||||||||
| Brief Summary | An abdominal aortic aneurysm (AAA) is a weakened and enlarged area in the abdominal aorta, which is a large blood vessel in the abdomen. If an AAA ruptures, it can be life-threatening. Research has shown that sedentary individuals are at increased risk of developing AAAs. This study will evaluate the effectiveness of an exercise program at limiting the growth of small AAAs in older individuals. |
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| Detailed Description | AAAs are common among older individuals, and are the 10th leading cause of death for men over the age of 55. A ruptured AAA usually leads to death. Therefore, early detection and treatment are critical. Currently, there are several surgical treatment options available, but there is no proven non-surgical treatment for AAAs. Research has shown that physical inactivity may be linked to the development of AAAs. The purpose of this study is to gather information on AAA risk factors, and to evaluate the effectiveness of an exercise program at preventing the growth of small AAAs in older individuals. This study will be composed of three individual projects. Project 1 will enroll 1400 individuals with small AAAs. Project 2 will enroll 1000 individuals with unknown aortic size and previously tested exercise capacity. Both groups of participants will attend one study visit, at which time their medical history and physical activity history will be recorded, vital signs will be collected, and blood and urine sample will be given. Questionnaires will be completed to document physical activity levels and AAA risk factors. An abdominal ultrasound will be performed to measure the size of the aorta or AAA. Participants in Project 2 will also take part in a treadmill exercise test, during which heart rate and blood pressure will be recorded, and heart activity will be monitored by an electrocardiogram (ECG). The third project will last 3 years and will enroll 340 individuals from Project 1. Participants will be randomly assigned to either an exercise program or a usual activity group. An initial screening visit will include medical history review, vital sign measurements, blood collection, questionnaires, an abdominal ultrasound, a positron emission tomography (PET) scan, a computed tomography (CT) scan, and a magnetic resonance imaging (MRI) scan. Participants in the exercise program will complete an exercise test at the beginning of the study and every 6 months for the duration of the study. Participants who live within 15 miles of the Palo Alto VA Hospital will take part in a supervised aerobic exercise program 3 days a week. Participants who live farther than 15 miles from the hospital will receive a detailed exercise plan and will exercise on their own while wearing a heart rate and activity tracking device. They will also attend monthly study visits for review of their progress. All participants assigned to the exercise program will be encouraged to increase their daily exercise. Each day they will wear a pedometer; twice a month they will wear a global positioning system (GPS) and heart rate monitor. Participants assigned to the usual activity group will wear pedometers each day and will maintain their usual level of physical activity. At yearly study visits, blood will be collected and physical activity levels will be assessed. All Project 3 participants with AAAs smaller than 4 cm will undergo an ultrasound and blood collection once a year; participants with AAAs 4 cm or larger will undergo the same procedures every 6 months. At the end of 3 years, all participants will attend a final study visit at which time their medical history will be reviewed and blood will be collected. They will also undergo an abdominal ultrasound, and PET, CT, and MRI scans. |
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| Study Phase | Phase I | ||||||||
| Study Type ICMJE | Interventional | ||||||||
| Study Design ICMJE | Treatment, Randomized, Open Label, Active Control, Parallel Assignment, Efficacy Study | ||||||||
| Condition ICMJE | Aortic Aneurysm, Abdominal | ||||||||
| Intervention ICMJE | Behavioral: Exercise Program | ||||||||
| Study Arms / Comparison Groups |
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| Publications * | |||||||||
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* Includes publications given by the data provider as well as publications identified by National Clinical Trials Identifier (NCT ID) in Medline. |
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| Recruitment Information | |||||||||
| Recruitment Status ICMJE | Recruiting | ||||||||
| Estimated Enrollment ICMJE | 2400 | ||||||||
| Estimated Completion Date | April 2011 | ||||||||
| Estimated Primary Completion Date | April 2011 (final data collection date for primary outcome measure) | ||||||||
| Eligibility Criteria ICMJE | Inclusion Criteria:
Exclusion Criteria:
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| Gender | Both | ||||||||
| Ages | 50 Years and older | ||||||||
| Accepts Healthy Volunteers | No | ||||||||
| Contacts ICMJE |
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| Location Countries ICMJE | United States | ||||||||
| Administrative Information | |||||||||
| NCT ID ICMJE | NCT00349947 | ||||||||
| Responsible Party | Cheryl McDonald, MD - Program Officer, National Heart, Lung and Blood Institute | ||||||||
| Study ID Numbers ICMJE | 391, P50 HL083800-01 | ||||||||
| Study Sponsor ICMJE | National Heart, Lung, and Blood Institute (NHLBI) | ||||||||
| Collaborators ICMJE | |||||||||
| Investigators ICMJE |
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| Information Provided By | National Heart, Lung, and Blood Institute (NHLBI) | ||||||||
| Verification Date | February 2009 | ||||||||
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ICMJE Data element required by the International Committee of Medical Journal Editors and the World Health Organization ICTRP |
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