Exercise Rehabilitation in Veterans With PAD

Peripheral Arterial Disease Clinical Trial

Official title:

Post-revascularization Rehabilitation to Improve Function in Veterans With PAD

Clinical Trial Details — Status: Completed

Administrative data

• NCT number: NCT02607046
• Other study ID #: F1927-P
• Secondary ID: I21RX001927
• Status: Completed
• Phase: N/A
• Start date: October 1, 2015
• Est. completion date: December 20, 2023

Study information

• Verified date: December 2023
• Source: VA Office of Research and Development
• Contact: n/a
• Is FDA regulated: No
• Study type: Interventional

Clinical Trial Summary

Peripheral artery disease (PAD) results in blockages of arteries (blood vessels) and decreased blood flow to the legs. This may cause difficulty or pain with walking or other activities that use leg muscles. Exercise may help improve blood flow in the legs and improve the ability to walk. This research project will be conducted patients with PAD that require revascularization. The goal is to examine the effects of 3 months of exercise rehabilitation or neuromuscular stimulation on leg blood flow, physical function, quality of life and general health.

Description:

Peripheral artery disease (PAD) and its associated declines in physical function impair quality of life (QOL) in nearly 20% of older Veterans and result in substantial VA health care costs. Revascularization addresses the anatomical pathology, but does not restore mobility function and QOL. Optimal therapy may require post-revascularization rehabilitation to address lingering defects in skeletal muscle that limit function; however, the current standard of care after revascularization does not include rehabilitation. Exercise training and neuromuscular electrical stimulation (NMES) may enhance function by increasing muscle perfusion to improve outcomes in older Veterans with PAD after revascularization. The investigators will enroll Veterans (50-80 years of age) with PAD who are planned for percutaneous revascularization. Participants will complete research testing consisting of: a) Assessment of mobility function and QOL; and b) Treadmill tests to assess ambulatory capacity, and calf muscle perfusion. Participants will undergo screening prior to revascularization and will have baseline testing 2-3 weeks after revascularization. After post-revascularization testing, patients will be randomized to Exercise-only or NMES-only. After completion of the 3-month intervention, participants will repeat all tests to determine the effects of the interventions.

Recruitment information / eligibility

• Status: Completed
• Enrollment: 56
• Est. completion date: December 20, 2023
• Est. primary completion date: December 31, 2019
• Accepts healthy volunteers: Accepts Healthy Volunteers
• Gender: All
• Age group: 50 Years to 80 Years

Eligibility

Inclusion Criteria:

• Diagnosis of peripheral arterial disease; or ankle-brachial index <0.9.
• Planned to undergo endovascular revascularization within 6 months.

Exclusion Criteria:

• Cancer under active treatment
• Planned for lower extremity bypass surgery
• Body mass index > 45 kg/m2
• Critical limb ischemia or lower extremity gangrene

Related Conditions & MeSH terms

• Intermittent Claudication
• Peripheral Arterial Disease
• Peripheral Vascular Diseases

Intervention

Other:
• Exercise training
The exercise program includes supervised and home-based walking and strength exercise.
• NMES
This intervention consists of using neuromuscular electrical stimulation (NMES) as a form of passive exercise for muscles in the legs.

Locations

Country	Name	City	State
United States	Baltimore VA Medical Center VA Maryland Health Care System, Baltimore, MD	Baltimore	Maryland

Sponsors (1)

Lead Sponsor	Collaborator
VA Office of Research and Development

Country where clinical trial is conducted

United States, 

References & Publications (4)

Addison O, Kundi R, Ryan AS, Goldberg AP, Patel R, Lal BK, Prior SJ. Clinical relevance of the modified physical performance test versus the short physical performance battery for detecting mobility impairments in older men with peripheral arterial diseas — View Citation

Addison O, Prior SJ, Kundi R, Serra MC, Katzel LI, Gardner AW, Ryan AS. Sarcopenia in Peripheral Arterial Disease: Prevalence and Effect on Functional Status. Arch Phys Med Rehabil. 2018 Apr;99(4):623-628. doi: 10.1016/j.apmr.2017.10.017. Epub 2017 Nov 11 — View Citation

Kundi R, Prior SJ, Addison O, Lu M, Ryan AS, Lal BK. Contrast-Enhanced Ultrasound Reveals Exercise-Induced Perfusion Deficits in Claudicants. J Vasc Endovasc Surg. 2017;2(1):9. doi: 10.21767/2573-4482.100041. Epub 2017 Mar 6. — View Citation

Prior SJ, Chrencik MT, Christensen E, Kundi R, Ryan AS, Addison O, Lal BK. An exercise stress test for contrast-enhanced duplex ultrasound assessment of lower limb muscle perfusion in patients with peripheral arterial disease. J Vasc Surg. 2024 Feb;79(2): — View Citation

Outcome

Type	Measure	Description	Time frame	Safety issue
Primary	Modified Physical Performance Test	Test of Mobility Function (minimum score = 0; maximum score = 36; higher score associated with better outcome)	3 months
Primary	Six-minute Walk Distance	Test of ambulatory capacity	3 months
Secondary	Muscle Perfusion Measured by Ultrasound Scan	Calf Muscle Perfusion assessed as digital video intensity from recorded ultrasound scans. Units are scale data with a minimum = 0 and no predetermined maximum. Higher score = more perfusion.	3 months