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The purpose of this study is to evaluate the safety and feasibility of LOFT Therapy in breast cancer survivors. In a previous study, the investigators found that many patients are more debilitated at diagnosis than previously recognized. Both chemotherapy and anti-estrogen therapy have a large effect. Within 6 months patients replace muscle with fat leading to a significant reduction in muscle power and endurance. Our data suggests that common exercise recommendations for at least 150 minutes of exercise a week would be far beyond many of our patients' physical ability after therapy, leading to the soreness, injury, frustration, and early discontinuation (or failure to initiate an exercise program in the first place). The degree of muscle loss seen in our patients is similar to that documented in US astronauts after long-term space flight. Our collaborator Dr. Yvonne Cagle, retired USAF flight surgeon, noted that the cosmonauts were in better shape (had less muscle atrophy) than the astronauts. This difference was more than could be explained by the rigorous Russian exercise program. The only key distinction was the compressive, "penguin suits" used by the Russians. This observation lead Dr. Cagle to develop a technique called low intensity, off loaded-compressive therapy (LOFT) to replicate the impact of the Russian penguin suits for patients who were debilitated, whether by space flight or by chronic conditions such as arthritis, Parkinson's disease, and multiple sclerosis. The LOFT method does not require excessive exertion or strain on the joints. In field observations, LOFT therapy improved muscle strength, muscle mass, endurance, sleep quality, and fatigue. This pilot study is the first to evaluate the safety, feasibility, and biologic impact of LOFT on breast cancer survivors.
Objectives This pilot trial will provide feedback on the feasibility and impact of LOFT in breast cancer survivors. The investigators will also explore the relationship of the LOFT intervention to changes in insulin resistance, growth hormone levels, body mass index, patient reported physical activity, fatigue, and overall quality of life.
Primary Objective Evaluate the safety and feasibility of LOFT training in breast cancer survivors (< 3 years from diagnosis) treated with either chemotherapy and/or anti-estrogen therapy.
1. Estimate the effect size of LOFT training on muscle power, endurance, daily activity, fatigue, and quality of life.
2. Estimate the effect of short-term LOFT training on biochemical parameters of inflammation, metabolism, anabolic hormone secretion, and bone turnover.
LOFT Therapy™ Summary LOFT Therapy™ is a form of exercise that requires less energy for movement. LOFT Therapy™ will be performed 2 times a week for 4 weeks a total of 8 sessions. The patient will be wrapped with fabric cuffs, on up to four limbs. The cuffs are applied to the widest part of the biceps and upper thighs at pressures between 80-100 mmHg with minimal venous encroachment. The patients will ride a recumbent bike for 18 total minutes of sub-maximal exertion (up to 70% repetition maximum ), with the option of up to 2 periods of 15-second higher intensity exertions as tolerated, followed by individualized respiratory recovery periods determined by the relative decrease in breathing effort.
The 18-minute session will be preceded by a two-minute compression check, where the wraps will be adjusted based on any signs or symptoms of nerve or vessel impingement. Patients will undergo an intake and outtake assessment with each session to collect subjective data and patient feedback. Two compression sessions will be conducted for 4 weeks, for a total of 8 sessions.
This study will enroll 15 patients. A 20% dropout rate for this group was taken into consideration so the investigators assume analysis will be done on at least 12 patients.
Endpoint Classification: Efficacy Study, Intervention Model: Single Group Assignment, Masking: Open Label, Primary Purpose: Supportive Care
Not yet recruiting
Published on BioPortfolio: 2015-07-09T08:38:23-0400
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