The purpose of this study is to assess the feasibility of home-based measurement of walking capacity in peripheral arterial disease (PAD) patients, uing the Global Positioning System (GPS). This study should state if the GPS technique could be used in clinical routine in order to assess walking capacity in PAD patients. Patients will be assessed a first time (test 1) and six months later (test 2).
The measurement of walking capacity in PAD patients is an important step in the management of such patients. The gold standard method to assess this walking capacity is the measurement of the maximal walking distance on a treadmill. However, treadmill measurement are not readily accessible and the relationship with free-living walking capacity is, although not well known, weak. A novel approach was developed using a Global Positioning System in order to assess community-based walking capacity. This method showed interesting results, validating the technique, but was limited to one laboratory and to the place where the measurements were performed. The next step is therefore to assess the feasibility of home-based measurement of walking capacity using the GPS technique, through a multicenter study regrouping university hospitals, independent vascular specialists (angiologists) and private clinic(s).
Study Type
OBSERVATIONAL
Enrollment
251
Home-based GPS recording(s) of walking capacity in PAD patients. Two evaluations will be performed. The second evaluation will be performed six months after the initial assessment (test 1) and only for patients with GPS maximal walking distance below 2000 meters at test 1. It is expected that some patients at test 2 will have undergo surgery or endovascular treatment.
University Hospital
Angers, France
Percentage of home-based GPS recordings that are analyzable
Time frame: December 2011
"Technical quality" of recorded GPS signals
Time frame: December 2011
Easiness of the interpretation of the GPS measurements
Time frame: December 2011
Adherence of the patients to the protocol
Time frame: December 2011
Compare GPS results to the results obtained with different questionnaires (external validity)
The questionnaires used assess the physical activity level, the quality of life and the walking impairment of the studied PAD patients.
Time frame: December 2011
Sensibility of GPS measurements after (or not) a therapeutic treatment (endovascular treatment, surgery)
Time frame: December 2011
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