About this trial
This study is a 3-month, prospective, randomized controlled clinical trial designed to address the efficacy of the DASH dietary program combined with a home-based exercise program, quantified by a step activity monitor, to improve exercise and vascular outcome measures in patients with PAD.
Eligibility criteria
This trial does not accept healthy volunteersQualifiers
History of claudication,
Presence of PAD, defined by meeting at least one of the following criteria (ABI at rest < 0.90, or > 20% decrease in ABI following a heel-rise exercise test in patients with a normal ABI at rest (> 0.90), or history of peripheral revascularization.
Disqualifiers
absence of PAD, defined by meeting all of the following 3 criteria (ABI at rest > 0.90), < 20% decrease in ABI following a heel-rise exercise test, and no history of peripheral revascularization,
non-compressible vessels (ABI > 1.40),
rest pain due to PAD (Fontaine stage III; Rutherford Grade II),
tissue loss due to PAD (Fontaine stage IV; Rutherford Grade III),
Trial design
Parallel
Treatments tested in this trial
DASH Diet plus Home-Based Exercise
BehavioralThe DASH dietary program consists of a diet emphasizing foods rich in fruits, vegetables, whole grains, and low-fat dairy, in which patients record daily servings of fruits and vegetables. The home-based exercise program consists of intermittent walking to moderate claudication pain 3 times per week for 3 months in a home-based setting.
Home-Based Exercise
BehavioralThe home-based exercise program consists of intermittent walking to moderate claudication pain 3 times per week for 3 months in a home-based setting.
Treatment groups
Trial outcomes
Primary outcomes
Peak Walking Time
The change in the time walked on a treadmill test
Physical Function subscale of quality of life from the Medical Outcomes Study Short-Form 36 questionnaire
The change in the Physical Function subscale from the pre-test value to the post-test value
Secondary outcomes
calf muscle oxygen saturation
The change in the calf muscle oxygen saturation value during exercise from the pre-test value to the post-test value
6-minute walk distance
The change in 6-minute walk distance from the pre-test value to the post-test value
high-sensitivity C-reactive protein
The change in the high-sensitivity C-reactive protein value from the pre-test value to the post-test value
Sponsors and contacts
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University of Oklahoma
Lead sponsor
Milton S. Hershey Medical Center
Collaborator
National Institute on Aging (NIA)
Collaborator
Case Western Reserve University
Collaborator