Measurement of walking distance and speed in patients with peripheral arterial disease: a novel method using a global positioning system.

  • Le Faucheur A
  • Abraham P
  • Jaquinandi V
 et al. 
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BACKGROUND: The maximal walking distance (MWD) performed on a treadmill test remains the "gold standard" in estimating the walking capacity of patients who have peripheral arterial disease with intermittent claudication, although treadmills are not accessible to most physicians. We hypothesized that global positioning system (GPS) recordings could monitor community-based outdoor walking and provide valid information on walking capacity in patients with peripheral arterial disease. METHODS AND RESULTS: We studied 24 patients (6 women) with arterial claudication (median [25th to 75th percentile] values: 57 years old [48 to 67 years], 169 cm tall [164 to 172 cm], weight 81 kg [71 to 86 kg], and ankle-brachial index 0.64 [0.56 to 0.74]). MWD on the treadmill was 184 m (144 to 246 m), which was compared with the results of self-reported MWD, the distance score from the Walking Impairment Questionnaire, MWD observed during a 6-minute walking test, and MWD measured over a GPS-recorded unconstrained outdoor walk in a public park. Self-reported MWD, Walking Impairment Questionnaire distance score, 6-minute walking test score, and GPS-measured MWD were 300 m (163 to 500 m), 28% (15% to 47%), 405 m (338 to 441 m), and 609 m (283 to 1287 m), respectively. The best correlation with MWD on the treadmill test was obtained with the MWD measured by the GPS (Spearman r=0.81, P

Author-supplied keywords

  • Aged
  • Disability Evaluation
  • Exercise Test -- Equipment and Supplies
  • Exercise Test -- Methods
  • Female
  • Geographic Information Systems
  • Human
  • Intermittent Claudication -- Diagnosis
  • Intermittent Claudication -- Physiopathology
  • Male
  • Middle Age
  • Peripheral Vascular Diseases -- Diagnosis
  • Peripheral Vascular Diseases -- Physiopathology
  • Questionnaires
  • Severity of Illness Indices
  • Time Factors
  • Walking

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  • A Le Faucheur

  • P Abraham

  • V Jaquinandi

  • P Bouyé

  • J L Saumet

  • B Noury-Desvaux

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