The Effects of Diet and Exercise Interventions in Peripheral Artery Disease

NCT ID: NCT03845036

Last Updated: 2025-04-16

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

RECRUITING

Clinical Phase

NA

Total Enrollment

150 participants

Study Classification

INTERVENTIONAL

Study Start Date

2024-09-16

Study Completion Date

2029-05-31

Brief Summary

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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.

Detailed Description

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This study seeks to (1) compare the changes in 6-minute walk distance (6MWD) and physical function quality of life in patients with peripheral artery disease (PAD) following a combined intervention of the dietary approaches to stop hypertension (DASH) dietary program plus a home-based exercise program, and following a home-based exercise program alone; and (2) compare the changes in microvascular function and inflammation in patients following the combined DASH diet and home-based exercise program, and the home-based exercise program alone.

The investigators hypothesize that the combined DASH diet and exercise program will result in greater increases in 6MWD and in the physical function quality of life than the exercise program alone. Further, it is hypothesized that the combined DASH diet and exercise program will result in greater improvements in calf muscle oxygen saturation \[StO2\] following exercise, and in high-sensitivity C-reactive protein (hsCRP\]) than the exercise program alone.

The home-based exercise program consists of intermittent walking to moderate claudication pain in a home-based setting. The DASH dietary program consists of the dietary approaches to stop hypertension diet emphasizing foods rich in fruits, vegetables, whole grains, and low-fat dairy.

Conditions

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Claudication Peripheral Artery Disease

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Prospective, randomized controlled clinical trial
Primary Study Purpose

TREATMENT

Blinding Strategy

SINGLE

Outcome Assessors

Study Groups

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DASH Diet plus Home-Based Exercise

The 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.

Group Type EXPERIMENTAL

DASH Diet plus Home-Based Exercise

Intervention Type BEHAVIORAL

The 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

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.

Group Type ACTIVE_COMPARATOR

Home-Based Exercise

Intervention Type BEHAVIORAL

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.

Interventions

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DASH Diet plus Home-Based Exercise

The 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.

Intervention Type BEHAVIORAL

Home-Based Exercise

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.

Intervention Type BEHAVIORAL

Eligibility Criteria

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Inclusion Criteria

1. History of claudication,
2. 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.

Exclusion Criteria

1. 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,
2. non-compressible vessels (ABI \> 1.40),
3. rest pain due to PAD (Fontaine stage III; Rutherford Grade II),
4. tissue loss due to PAD (Fontaine stage IV; Rutherford Grade III),
5. use of medications indicated for the treatment of intermittent claudication (cilostazol and pentoxifylline) initiated within three months prior to investigation,
6. peripheral revascularization within one month prior to investigation,
7. active cancer,
8. end stage renal disease defined as stage 5 chronic kidney disease,
9. medical conditions that are contraindicative for exercise according to the American College of Sports Medicine,
10. cognitive dysfunction (mini-mental state examination score \< 24), and
11. failure to complete the baseline tests within three weeks.
Minimum Eligible Age

60 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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Milton S. Hershey Medical Center

OTHER

Sponsor Role collaborator

National Institute on Aging (NIA)

NIH

Sponsor Role collaborator

Case Western Reserve University

OTHER

Sponsor Role collaborator

University of Oklahoma

OTHER

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Principal Investigators

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Andrew Gardner, Ph.D.

Role: PRINCIPAL_INVESTIGATOR

Professor, Department of Medicine, Cardiology

Locations

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O'Donoghue Research Building, University of Oklahoma Health Sciences Center

Oklahoma City, Oklahoma, United States

Site Status RECRUITING

Countries

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United States

Central Contacts

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Andrew Gardner, Ph.D.

Role: CONTACT

405-271-4742

Facility Contacts

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Andrew W Gardner, PhD

Role: primary

405-271-4742

References

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Gardner AW, Parker DE, Montgomery PS, Scott KJ, Blevins SM. Efficacy of quantified home-based exercise and supervised exercise in patients with intermittent claudication: a randomized controlled trial. Circulation. 2011 Feb 8;123(5):491-8. doi: 10.1161/CIRCULATIONAHA.110.963066. Epub 2011 Jan 24.

Reference Type RESULT
PMID: 21262997 (View on PubMed)

Gardner AW, Parker DE, Montgomery PS, Blevins SM. Step-monitored home exercise improves ambulation, vascular function, and inflammation in symptomatic patients with peripheral artery disease: a randomized controlled trial. J Am Heart Assoc. 2014 Sep 18;3(5):e001107. doi: 10.1161/JAHA.114.001107.

Reference Type RESULT
PMID: 25237048 (View on PubMed)

Gardner AW, Bright BC, Ort KA, Montgomery PS. Dietary intake of participants with peripheral artery disease and claudication. Angiology. 2011 Apr;62(3):270-5. doi: 10.1177/0003319710384395.

Reference Type RESULT
PMID: 21406424 (View on PubMed)

Other Identifiers

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R01AG070086-01A1

Identifier Type: NIH

Identifier Source: secondary_id

View Link

16383

Identifier Type: -

Identifier Source: org_study_id

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