The RESPECT-PAD Trial

October 15, 2018 updated by: Charles McCollum, University of Manchester

A Pilot Randomised Controlled Trial of REmotely SuPervised Exercise Training for Patients With Peripheral Arterial Disease: The RESPECT-PAD Trial

Peripheral arterial disease affects around 25% of the UK population aged over 55. Left untreated it can lead to debilitating pain, gangrene, amputation and death. It most commonly affects the lower limbs and in the earlier stages of the disease patients can present with a symptom known as intermittent claudication; pain felt in the legs which stops the patient from walking past a certain distance. Current National Institute for Healthcare and Excellence (NICE) guidelines recommend Supervised Exercise as first line treatment for patients with peripheral arterial disease presenting with intermittent claudication. Supervised exercise employs behaviour changing techniques which enable the patient to modify their lifestyles, improving their claudication symptoms, quality of life and reducing their cardiovascular risk. Despite this treatment being significantly more cost-effective than often employed complex endovascular management, most institutions don't offer such programmes citing lack of resources and compliance from clinicians and patients alike.

The investigators propose a more cost-effective, resource-savvy solution in the form of REmotely SuPervised ExerCise Training (RESPECT). This allows the patient to exercise in the convenience of their own home, at a time of their choosing but still be supervised via fitness tracker technology and an online fitness platform. This randomised controlled trial will attempt to prove its' effectiveness in increasing claudication distance, improving functional ability, decreasing cardiovascular risk and improving quality of life whilst being more cost-effective than the currently recognised national first line treatment. This trial has the potential to revolutionise the management of patients with peripheral arterial disease.

Study Overview

Status

Unknown

Conditions

Intervention / Treatment

Study Type

Interventional

Enrollment (Anticipated)

60

Phase

  • Not Applicable

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Contact

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

30 years to 80 years (Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

Inclusion Criteria:

  1. Patients willing and able to undertake supervised or home-based exercise training aged between 40 and 85
  2. Positive Edinburgh questionnaire for intermittent claudication (APPENDIX H)
  3. Proven peripheral arterial disease on diagnostic imaging
  4. Ankle Brachial Pressure Index (ABPI) <0.9
  5. Fontaine Classification (APPENDIX I) of PAD Stage II
  6. Conservative management plan agreed for by Consultant Vascular Surgeon.

Exclusion Criteria:

  1. Critical limb ischaemia
  2. Asymptomatic peripheral arterial disease
  3. Ambulation limited by co-morbid condition other than claudication:

    Severe coronary artery disease, angina pectoris, chronic lung disease, neurological disorder, arthritis, amputation

  4. Contraindication to exercise training (AHA guidelines):71 acute MI (within 1 week), unstable angina, uncontrolled cardiac arrhythmias causing symptoms or haemodynamic compromise, active endocarditis, symptomatic severe aortic stenosis, acute pulmonary embolus, acute noncardiac disorder than may be aggravated by exercise such as infection, thyrotoxicosis, acute myocarditis, known physical disability that would preclude safe and adequate testing, known thrombosis of the lower limb, known left main stem coronary stenosis, moderate stenotic valvular heart disease, pulmonary hypertension, hypertrophic cardiomyopathy, atrio-ventricular block.
  5. Psychiatric disorder precluding them from consenting for research and/or exercise training
  6. Arterial reconstruction in the previous 12 months or planned within the next 6 months.
  7. Recent or upcoming major surgery (within 3 months)
  8. Unwilling or unable to attend/perform exercise training
  9. Non-atherosclerotic cause of PAD
  10. Other significant medical problems which impact on the patient's ability to complete a 12-week exercise programme, which could include:

malignancy, chronic renal disease, chronic liver disease or anaemia, active substance abuse, dementia

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Experimental: REmotely SuPervised Exercise Training
12- week home based exercise programme consisting of bi-weekly, hourly sessions at the time and place of the participant's choosing. They will wear a fitness tracker which will automatically upload their exercise data to an online platform which can be monitored by the research team and used to provide additional motivation.
As described in the Arms section.
Active Comparator: Supervised Exercise Training
As per NICE guidance. 12 week, bi-weekly, one hour sessions of supervised exercise training.
As described in the Arms section.

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Absolute Claudication Distance
Time Frame: At 12 weeks
Measured using a G-protocol on treadmill testing
At 12 weeks

Secondary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Absolute Claudication Distance
Time Frame: 6 months and 1 year.
Measured using a G-protocol on treadmill testing
6 months and 1 year.
Initial Claudication Distance
Time Frame: 12 weeks, 6 months and one year
Measured using a G-protocol on treadmill testing
12 weeks, 6 months and one year
Health-related Quality of Line
Time Frame: 12 weeks, 6 months and one year
Measured using the Medical Outcomes SF36v2 Questionnaire
12 weeks, 6 months and one year
Cardiovascular Risk Factors
Time Frame: 12 weeks, 6 months and one year
Measured by calculating change in waist circumference and BMI
12 weeks, 6 months and one year
Cost
Time Frame: 12 weeks, 6 months and one year
Measured by the cost of the interventions in each group, including resource and staffing costs. Also includes any unplanned admissions and procedures carried out due to a complication of the disease of interest
12 weeks, 6 months and one year
Habitual physical activity levels
Time Frame: 12 weeks, 6 months and one year
As measured by the physical activity scale for the elderly questionnaire.
12 weeks, 6 months and one year
Adherence
Time Frame: 12 weeks, 6 months and one year
As measured by using the amount of exercise in minutes performed over the 12 weeks, divided by the number of minutes of exercise prescribed x100
12 weeks, 6 months and one year

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Anticipated)

November 1, 2018

Primary Completion (Anticipated)

April 1, 2019

Study Completion (Anticipated)

October 1, 2019

Study Registration Dates

First Submitted

September 21, 2017

First Submitted That Met QC Criteria

September 26, 2017

First Posted (Actual)

October 2, 2017

Study Record Updates

Last Update Posted (Actual)

October 16, 2018

Last Update Submitted That Met QC Criteria

October 15, 2018

Last Verified

October 1, 2018

More Information

Terms related to this study

Other Study ID Numbers

  • 224506

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

UNDECIDED

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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