NCT01127061

Study of Exercise Training in Hypertrophic Cardiomyopathy

A Randomized Trial of Moderate Intensity Exercise Training in Hypertrophic Cardiomyopathy

• Status: Completed
• Phase: N/A
• Study type: Interventional
• Enrollment: 136 (actual)
• Sponsor: University of Michigan · Academic / Other
• Sex: All
• Age: 18 Years – 80 Years
• Healthy volunteers: Not accepted

Summary

The investigators propose a pilot randomized controlled trial to determine the safety and potential benefits of moderate intensity exercise in patients with hypertrophic cardiomyopathy. The investigators hypotheses are that exercise parameters derived from a baseline cardiopulmonary exercise test will target an appropriately safe level of exercise intensity that will not cause significant arrhythmias or exacerbate symptoms and that exercise training for 4 months will result in significant improvements in peak oxygen consumption (peak VO2) and quality of life, with neutral effects on the clinical characteristics.

Detailed description

The goal of this randomized clinical pilot trial is to establish the safety profile and potential benefits of moderate intensity exercise in patients with hypertrophic cardiomyopathy (HCM). Participation in competitive athletics is associated with an increased risk of sudden cardiac death (SCD) in individuals with structural heart disease, including HCM. This has appropriately led to the establishment of national guidelines based on expert opinion that discourage participation in high intensity competitive sports, burst exertion (e.g., sprinting), or isometric exercise (e.g., heavy lifting). Non-competitive, low to moderate intensity exercise is allowable, although many physicians and HCM patients are still understandably apprehensive. Data on the safety of a recreational exercise program, and how to gauge appropriate intensity level, are desperately needed so that HCM patients can reap the well established health benefits of regular physical activity. Limited, but compelling animal data suggest that moderate intensity exercise is not only safe, but may also prevent or even reverse cardiac hypertrophy, fibrosis, myocellular disarray, and apoptosis associated with HCM. There are no published studies on exercise in patients with HCM, although large clinical trials in heart failure have shown exercise training to be safe, to improve peak VO2 and quality of life, and to lower cardiovascular mortality. The pilot randomized control trial proposed here is the first to determine the safety of moderate intensity exercise training and explore its potential benefits in patients with HCM.

Conditions

• Cardiomyopathy, Hypertrophic

Interventions

Type	Name	Description
BEHAVIORAL	Exercise training	4 months of exercise training that is custom-designed based on individual cardiopulmonary stress test data. Regimen starts at low intensity (60% of heart rate reserve) and frequency (20 minutes, 3 days per week) and increases with a goal of 70% of heart rate reserve and exercising 60 minutes 4-7 days per week.

Timeline

• Start date: 2010-04-01
• Primary completion: 2015-09-01
• Completion: 2016-11-01
• First posted: 2010-05-20
• Last updated: 2019-02-15
• Results posted: 2019-02-15

Locations

2 sites across 1 country: United States