About this trial
Marfan syndrome (MFS) is a distinctive connective tissue disorder that 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.
Eligibility criteria
This trial does not accept healthy volunteersQualifiers
Male and female patients diagnosed with Marfan syndrome (defined by Ghent criteria and either a pathogenic variant in FBN1 or ectopia lentis)
Age 10-25 years at enrollment
Disqualifiers
History of aortic surgery
History of spinal surgery with implanted materials that may negatively impact MRI safety or imaging quality.
Diagnosis of major congenital heart disease (ASD, VSD, bicuspid aortic valve, and mitral valve prolapse will not qualify as exclusion criteria)
Condition limiting the ability to perform moderate exercise.
Trial design
Parallel
Treatments tested in this trial
Exercise Intervention Group
Other interventionPatients 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 12 weeks all patients will return for re-assessment.
Control Group
Other interventionPatients in the control group will be instructed to continue with baseline physical activities over the duration of the study and be given instructions on the use of the activity tracker. At the end of 12 weeks all patients will return for re-assessment.
Treatment groups
Trial outcomes
Primary outcomes
Maximum VO2
Maximum VO2 in ml/kg/minute will be collected via Exercise Stress Test. Range 30-85, higher is better.
Secondary outcomes
Mean systolic blood pressure
mmHg, range 20-200, both low and high are abnormal, goal is age, sex and height-based, goal 10-50 percentile
Mean diastolic blood pressure
mmHg, range 20-150, both low and high are abnormal, goal is age, sex and height-based, goal 10-50 percentile
Mean pulse pressure
mmHg, systolic blood pressure minus diastolic blood pressure, range 30-70 mmHg, goal is normal range for age and sex
Weight
kg, range 50-300kg, lower is better, excluding underweight patients
Sponsors and contacts
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Baylor College of Medicine
Lead sponsor
Southern Star Research
Collaborator