Yoga to Improve Physical Function and Maximal Walking Distance Among Patients With Peripheral Arterial Disease

December 11, 2015 updated by: Elizabeth A. Jackson, University of Michigan

Yoga to Improve Physical Function and Maximal Walking Distance Among Patients With Peripheral Arterial Disease: A Pilot Study

The investigators propose to pilot test a six-week yoga program among adults with peripheral arterial disease (PAD). Participants (n=50) will be randomized to a six-week yoga intervention (n=25) or wait-list control (n=25). The yoga intervention will include a weekly yoga class currently used among cardiac rehab patients at the University of Michigan Health System, together with home-based practice sessions. Participants will perform treadmill testing at baseline and 6 weeks to assess walking capacity. The primary outcomes of interest include 1) acceptability of the program by participants, 2) feasibility of recruitment, 3) change in maximal walking distance, 4) change in claudication symptoms, and 5) change in health-related quality of life (HRQOL). The investigators expect this will inform us on the acceptability and feasibility of a larger proposal examining yoga in PAD patients. These data will also inform on the effect size in maximal walking, and HRQOL, which will be used to estimate the sample size needed for a larger R01 level proposal.

Study hypotheses:

Hypothesis 1: Participants will find the yoga program acceptable with low drop-out rates (<15%), excellent attendance (>80% classes attended), and good completion of the home-based practice sessions (self-report >80% completed).

Hypothesis 2: The yoga intervention will be feasible for a larger study based on numbers of potential participants approached, and those who consent to participate vs. those who do not.

Hypothesis 3: Increases in maximal walking distance and pain-free walking distance (from baseline to 6 weeks) will be greater in the participants randomized to the yoga intervention compared to the control group.

Hypothesis 4: Self-reported claudication symptoms will be reduced to a greater degree (at 6 weeks) among participants randomized to the yoga intervention compared to the control group.

Hypothesis 5: Increases in HRQOL (from baseline to 6 weeks) will be greater in the participants randomized to the yoga intervention compared to the control group.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Terminated

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Interventional

Enrollment (Actual)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
7

Phase

Phase

The stage of a clinical trial studying a drug or biological product, based on definitions developed by the U.S. Food and Drug Administration (FDA). The phase is based on the study's objective, the number of participants, and other characteristics. There are five phases: Early Phase 1 (formerly listed as Phase 0), Phase 1, Phase 2, Phase 3, and Phase 4. Not Applicable is used to describe trials without FDA-defined phases, including trials of devices or behavioral interventions.
  • 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 Locations

  • United States
    • Michigan
      • Ann Arbor, Michigan, United States, 48106
        • University of Michigan

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

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

41 years and older (ADULT, OLDER_ADULT)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • Age > 40
  • Diagnosis of lower extremity PAD (defined as a documented ankle-brachial index of < 0.9)
  • Do less than 150 minutes of exercise per week
  • Competent to give informed consent

Exclusion Criteria:

  • Life expectancy under 1 year
  • Pregnancy
  • Co-morbidities which limit physical activity to a severe degree (unable to walk at least a block)
  • Signs of critical limb ischemia and/or planned revascularization in the next 12-months
  • Recent CVD event (< 3 months) including stroke/transient ischemic attack (TIA), myocardial infarction (MI), unstable angina (UA), percutaneous coronary intervention (PCI)/coronary artery bypass grafting (CABG), or severe valve disease, congenital heart disease, complex arrhythmias (untreated), NYHA class III-IV heart failure
  • Recent or current enrollment in formal exercise or yoga program
  • Psychiatric disorder, which limits subjects ability to follow the study protocol
  • Current substance abuse
  • Non-English speaking

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: SUPPORTIVE_CARE
  • Allocation: RANDOMIZED
  • Interventional Model: PARALLEL
  • Masking: NONE

Arms and Interventions

Participant Group / Arm

Participant Group / Arm

A group or subgroup of participants in a clinical trial that receives a specific intervention/treatment, or no intervention, according to the trial's protocol.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
EXPERIMENTAL: Yoga intervention
Behavioral: Yoga intervention
Participants will attend one weekly 60 minute hatha yoga class taught by a certified yoga instructor for 6 weeks. Each participant is to practice yoga at home 3-5 days per week. Paper logs will be provided to record date, time and duration of yoga practice each week.
NO_INTERVENTION: Wait list control

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Time Frame
To test the acceptability of a yoga program for patients with PAD. We will evaluate drop-out rates (<15%), attendance (>80% classes attended), and completion of the home-based practices sessions (self-report >80% completed).
Time Frame: After 6 weeks
After 6 weeks

Secondary Outcome Measures

Secondary Outcome Measures

In a clinical study's protocol, a planned outcome measure that is not as important as the primary outcome measure for evaluating the effect of an intervention but is still of interest. Most clinical studies have more than one secondary outcome measure.
Outcome Measure
Measure Description
Time Frame
To test the feasibility of a yoga program for patients with PAD.
Time Frame: At end of study
Feasibility will be determined by numbers of potential participants approached, and those who consent to participate vs. those who do not.
At end of study
To test the effectiveness of a yoga program to improve maximal walking distance among participants with PAD.
Time Frame: Baseline and 6 weeks
Baseline and 6 weeks
To test the effectiveness of a yoga program to reduce claudication symptoms among participants with PAD.
Time Frame: Baseline and 6 weeks
Baseline and 6 weeks
To test the effectiveness of a yoga program to improve health-related quality of life among participants with PAD.
Time Frame: Baseline and 6 weeks
Baseline and 6 weeks

Collaborators and Investigators

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

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
University of Michigan

Investigators

Investigators

A researcher involved in a clinical study. Related terms include site principal investigator, site sub-investigator, study chair, study director, and study principal investigator.
  • Principal Investigator: Elizabeth A. Jackson, MD MPH FACC, University of Michigan

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

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
February 1, 2013

Primary Completion (ACTUAL)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
December 1, 2015

Study Completion (ACTUAL)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
December 1, 2015

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
November 22, 2013

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
December 5, 2013

First Posted (ESTIMATE)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
December 11, 2013

Study Record Updates

Last Update Posted (ESTIMATE)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
December 14, 2015

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
December 11, 2015

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
December 1, 2015

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • 321872

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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