Marfan Syndrome Moderate Exercise Pilot
Study Details
Study Description
Brief Summary
Marfan syndrome (MFS) affects multiple organ systems including the heart, bones, ligaments, and eyes, and is associated with significant risk of aortic dissection. Given limited evidence from in-vitro studies, and theoretical concerns, the majority of patients with MFS are restricted from certain physical activities. The lack of exercise and deconditioning have detrimental effects including increasing weakness, joint pain, decreased endurance, and depressive symptoms. Given the significant paucity of data currently existing on the effects of exercise in humans with MFS, and the recent, optimistic findings in rodent models, this pilot trial was established to assess the effects of moderated dynamic exercise in adolescents and young adults with MFS.
| Condition or Disease | Intervention/Treatment | Phase |
|---|---|---|
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N/A |
Detailed Description
Marfan syndrome (MFS) affects multiple organ systems including the heart, bones, ligaments, and eyes, and is associated with significant risk of aortic dissection. Given anecdotal reports of aortic dissection, limited evidence from in-vitro studies, and theoretical concerns, the majority of patients with MFS are restricted from certain physical activities, most commonly isometric exercise and contact sports. Published guidelines also suggest restriction from highly dynamic competitive sports. While clinicians may mean to restrict patients only from competitive sports, often children and families interpret this caution as applying to almost all exercise, resulting in a large number of patients with Marfan syndrome being sedentary. This lack of exercise and deconditioning likely have detrimental effects in increasing weakness and joint pain and decreasing endurance. Depressive symptoms are also not uncommon in Marfan syndrome, and may be triggered or exacerbated by guidance to acutely cease participation in sports at the time of diagnosis.
To date, as far as the investigators are aware, there are no published controlled studies on the effects of dynamic exercise on human subjects. In 2017, Mas-Stachurska et al published a study suggesting that a moderate level of dynamic exercise mitigated progressive degradation of the cardiac structures typically seen in Marfan Syndrome in a rodent sample. This study suggests the possibility that the fears surrounding moderate exercise in humans may be unwarranted. In addition, this study suggests that moderate exercise may actually protect the aorta and myocardium, in addition to the numerous other physical and emotional benefits that have been shown to result from consistent exercise. The overall goal is to evaluate the effects of a moderate dynamic exercise program on measures of cardiovascular, muscular, and mental health in adolescents and young adults with Marfan syndrome. The investigators plan to perform a randomized pilot study to calculate effect estimates to perform a larger multi-center study. The objective is to 1) randomize 20 patients with Marfan syndrome age 12-21 years to current status (controls) versus a moderate dynamic exercise intervention, then 2) allow the control group patients to undergo the exercise intervention. The investigators will then compare outcomes between both the intervention and control groups, and between the baseline and post-intervention states. Specific outcome measures will include cardiovascular assessment: maximal oxygen uptake (max VO2), segmental and central aortic stiffness, ventricular mass and volume, and endothelial function, muscular/physical assessment: manual muscle testing (MMT), functional balance, and pain assessment, and quality of life/mental health assessment: health-related quality of life, depression and anxiety screening scales. The hypothesis is that the intervention of a moderate exercise program introduced by a licensed physical therapist will result in improvement in cardiovascular status, muscular health, and mental health without detrimental effects on the aortic wall.
Study Design
Arms and Interventions
| Arm | Intervention/Treatment |
|---|---|
| Experimental: Exercise Intervention Group Group of up to 20 patients will receive all of the preliminary outcome measure testing (cardiovascular, musculoskeletal, and psychological screening) in addition to exercise intervention education, demonstration, and follow up to ensure compliance and safety. |
Other: Exercise Intervention Group
Patients will be educated on methods of self-evaluating exertion and cardiovascular effort by assessing respiratory rate and perceived exertion. Next, patients will be given options for cardiovascular activities and complete at a moderate level of activity for a minimum of 150 minutes per week. Patients will perform a combination of exercises under the supervision of a physical therapist until a mod intensity level is reached and sustained. Patients will be taught to use the activity tracker to record their heart rate, activity, and PES. Patients will have a phone call every week to assess status, answer questions, and provide guidance on progressing intensity or duration of exercise. At the end of 8 weeks all patients will return for re-assessment.
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Outcome Measures
Primary Outcome Measures
- Maximum VO2 [4 months]
Maximum VO2 in ml/kg/minute will be collected via Exercise Stress Test. Range 30-85, higher is better.
Secondary Outcome Measures
- Mean systolic blood pressure [4 months]
mmHg, range 70-200, both low and high are abnormal, goal is age, sex and height-based, goal 10-50 percentile
- Mean Diastolic blood pressure [4 months]
mmHg, range 20-150, both low and high are abnormal, goal is age, sex and height-based, goal 10-50 percentile
- Mean pulse pressure [4 months]
mmHg, systolic blood pressure minus diastolic blood pressure, range 30-70 mmHg, goal is normal range for age and sex
- Weight [4 months]
kg, range 50-300kg, lower is better, excluding underweight patients
- BMI [4 months]
kg/m2, lower is better generally, excluding pts with BMI <5% for age
- Left ventricular strain by cardiac MRI [4 months]
Continuous measure derived from post-processing MRI
- Right ventricular strain by cardiac MRI [4 months]
Continuous measure derived from post-processing MRI
- Aortic root strain [4 months]
Continuous measure %, higher is less stiff, Range 0-40
- Aortic Root Distensibility [4 months]
×10-3 mm Hg-1, Continuous measure, range 0.1-10
- Aortic Root β-Stiffness index [4 months]
No units, Range 0.1-90
- Maximum aortic root dimension [4 months]
Measured in cm, range 1-8cm
- Aortic root z-score [4 months]
No units, based on body surface area published references, range -3 to 25
- Aortic pulse wave velocity from MRI [4 months]
meters/second, range 0-30
- Pulse wave velocity derived from applanation tonometry [4 months]
meters/second, range 0-30
- Augmentation index [4 months]
%, range 1-90
- Manual muscle testing score [4 months]
Grade 0-5, higher is better
- Reactive hyperemia index [4 months]
no units, 0-4 range, higher is worse
- Visual analog assessment of pain [4 months]
no units, scale from 0-6, 6 is worse
- Single Leg Stance Test [4 months]
seconds, higher is better
- Single limb squat test score [4 months]
seconds, higher is better
- Star Excursion Balance Test [4 months]
%, range 0-100, higher is better
- 6M Timed Hop Test [4 months]
milliseconds, range 1 to infinity, lower is better
- Scale for Child Anxiety Related Emotional Disorders (SCARED) (ages 12-18 y) [4 months]
41 item scale, each with 3 point Likert scale, scale is summed, range 0-123, higher is worse
- Quality of Life Scale (QOLS) (ages 19-21 y) [4 months]
16 items, each with 7 point Likert, higher is worse
- Pediatric Quality of Life Scale (PedsQL) scale scores [4 months]
reported in 3 domains, each reported on Likert scale, scaled to 0-100 scale, lower is worse
- Children's Depression Inventory (CDI) 2 (ages 12-18 y) [4 months]
28-item assessment that yields a Total Score, 2 scale scores, and 4 subscale scores. For each item, respondent is presented with 3 choices that correspond to 3 levels of symptomatology: 0 (absence of symptoms), 1 (mild or probable symptom), or 2 (definite symptom). Lower is better
- Depression, Anxiety, & Stress Scale (DASS) (ages 19-21 y) [4 months]
set of 3 self-report scales. Each scale contains 14 items, each with a 4-point severity/frequency scale, higher is worse
Eligibility Criteria
Criteria
Inclusion Criteria:
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Must be between the ages of 12-21
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Diagnosis of Marfan Syndrome
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Must not have other conditions that limit the patients ability to perform exercise
Exclusion Criteria:
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Patients who have undergone aortic surgery
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Patients with major congenital heart disease
Contacts and Locations
Locations
| Site | City | State | Country | Postal Code | |
|---|---|---|---|---|---|
| 1 | Texas Children's Hospital | Houston | Texas | United States | 77030 |
Sponsors and Collaborators
- Baylor College of Medicine
- The Marfan Foundation
Investigators
- Principal Investigator: Shaine A Morris, MD MPH, Baylor College of Medicine
Study Documents (Full-Text)
None provided.More Information
Publications
None provided.- H-45475