- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT02887755
Assessing the Feasibility of a Novel Non-Invasive Sensor for Guiding Wounded Warrior Rehabilitation
March 29, 2018 updated by: Henry M. Jackson Foundation for the Advancement of Military Medicine
The purpose of this study is to test a low cost, non-invasive, wearable near-infrared spectroscopy (NIRS) sensor, previously validated for able-bodied athletes as a rehabilitation aid for war-fighters with lower extremity limb loss.
This sensor can record real-time physiologic data that relates to total fitness capacity and exertion levels and may help develop individualized programs on a per-patient basis.
The uniqueness of this NIRS measurement system is that it provides real-time muscular oxygenation, dehydration, and iron status during whole-body exercise, as well as training-induced adaptations.
Currently, no technology like this has been tested in an amputee population.
Successfully validating this technology in a wounded warrior population would provide vital information regarding tissue perfusion after injury and new opportunities for improving rehabilitation outcomes.
Study Overview
Status
Completed
Conditions
Intervention / Treatment
Study Type
Interventional
Enrollment (Actual)
20
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 Locations
-
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Maryland
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Bethesda, Maryland, United States, 20889
- Walter Reed National Military Medical Center
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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
18 years to 45 years (Adult)
Accepts Healthy Volunteers
No
Genders Eligible for Study
All
Description
Inclusion Criteria:
- Military health care beneficiary and veterans for enrollment.
- Between 18 and 45 year old.
- Possess a unilateral transtibial or transfemoral amputation.
- Low risk for cardiovascular disease.
- Ambulatory without assistive ambulatory device.
Exclusion Criteria:
- Exclusion criteria includes individuals outside of our age range or if over the age of 18 and under the age of 45 will be excluded if found at risk according to the ACSM/AHA pre-participation screening questionnaire for exercise testing.
- Told by a doctor that they should not exercise.
- Orthopedic injury/surgery of the lower extremity within the last year
- Less than 5" x 2.5" of soft tissue proximal to the prostheses (since the sensor will need to be placed on the soft tissue proximally)
- Hip or shoulder disarticulation.
- Regular use of medications designed to alter cardiovascular function;
- Unwilling to comply with the study protocol.
- Individuals with a fat layer greater than 10mm in correspondence of the location of the NIRS probe (thigh).
- Allergic reaction to latex, cotton, or polyester, which are the primary materials of an ace bandage.
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: N/A
- Interventional Model: Single Group Assignment
- Masking: None (Open Label)
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
Experimental: Amputee Group
In this study n=20 returning US military combatants between 18 and 45 years of age who have unilateral transtibial or transfemoral amputation will be asked to perform two aerobic exercise tests while we4aring the NIRS sensor.
Subjects must be medically cleared and able to complete approximately 30 minutes of physical activity.
|
These sensors utilize NIRS to evaluate oxygenated and deoxygenated hemoglobin, total oxygenation index and total blood flow.
This is done by bouncing infrared light off of chromatophores (located within red blood cells), which is then refracted off of the cells in the capillary beds to the topical sensor.
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What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Single Stage Treadmill Test
Time Frame: Single Study Visit (Study consists of only one visit)
|
The single stage treadmill test is a valid and easily performed submaximal test that estimates the VO2max of healthy adults aged 20-59 years.
The test involves a 4 minute warm up at 0% grade at a self-selected walking speed that elicits a heart rate within 50-70% of the individual's age-predicted maximum heart rate.
|
Single Study Visit (Study consists of only one visit)
|
6 Minute Walk Test
Time Frame: Single Study Visit (Study consists of only one visit)
|
The test measures the distance that an individual can walk on a flat, hard surface in a period of 6 minutes.
It evaluates the global and integrated responses of all the systems involved during exercise, including the pulmonary and cardiovascular systems, systemic circulation, peripheral circulation, blood, neuromuscular units, and muscle metabolism.
|
Single Study Visit (Study consists of only one visit)
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Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
The Borg Rating of Perceived Exertion Scale (RPE)
Time Frame: Single Study Visit (Study consists of only one visit)
|
The RPE scale measures feelings of effort, strain, discomfort and/or fatigue experienced during both aerobic and resistance training.
It is based on the physical sensations a person experiences during physical activity, including increased heart rate, increased respiration or breathing rate, increased sweating, and muscle fatigue.
|
Single Study Visit (Study consists of only one visit)
|
Collaborators and Investigators
This is where you will find people and organizations involved with this study.
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
December 1, 2015
Primary Completion (Actual)
October 1, 2017
Study Completion (Actual)
October 1, 2017
Study Registration Dates
First Submitted
August 24, 2016
First Submitted That Met QC Criteria
August 29, 2016
First Posted (Estimate)
September 2, 2016
Study Record Updates
Last Update Posted (Actual)
April 2, 2018
Last Update Submitted That Met QC Criteria
March 29, 2018
Last Verified
March 1, 2018
More Information
Terms related to this study
Other Study ID Numbers
- 412936
Plan for Individual participant data (IPD)
Plan to Share Individual Participant Data (IPD)?
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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