PMID: 9546962Jan 1, 1997Paper

Comparison of graded versus constant treadmill test protocols for quantifying intermittent claudication

Vascular Medicine
H ChaudhryJ Dormandy

Abstract

The standard method for quantifying the symptoms of intermittent claudication is by using treadmill walking distance. It has recently been suggested that a graded exercise test is much more reproducible than a constant load exercise test. Graded protocols have also been claimed to abolish the placebo effect that has been reported with the constant load test. The reproducibility of absolute claudication distance (ACD) and initial claudication distance (ICD) using a constant load was compared to the graded load treadmill protocol. Fourteen patients (mean age 66 years) with varying severity of stable intermittent claudication were tested using a constant load (3.2 km/h, 10% gradient) and a graded load (3.2 km/h, 0% gradient increasing by 3.5% every 3 min). Patients were tested twice using each protocol in a random sequence, with a minimum 2 day interval between visits. Intra-class correlation coefficient (R) with a constant load protocol for ICD and ACD was R = 0.68, R = 0.93, respectively. With a graded protocol R = 0.84 for ICD and R = 0.98 for ACD. Relative coefficient of repeatability for ICD and ACD during constant load tests were 1.47 and 1.90 respectively and with a graded load test were 1.69 and 1.52 respectively. It was c...Continue Reading

Citations

Mar 20, 2003·Clinical and Applied Thrombosis/hemostasis : Official Journal of the International Academy of Clinical and Applied Thrombosis/Hemostasis·Fumihiko KushiyaHirosi Shiku
Oct 7, 2009·Scandinavian Journal of Medicine & Science in Sports·E WangJ Hoff
Jun 1, 2019·Angiologii︠a︡ i sosudistai︠a︡ khirurgii︠a︡ = Angiology and vascular surgery·R E KalininA F Ncheĭe
Jun 13, 2012·Wiener medizinische Wochenschrift·Alfa Wenkstetten-HolubRobert Wolfgang Kurz
Jun 1, 2004·Yakugaku zasshi : Journal of the Pharmaceutical Society of Japan·Masayuki HashiguchiRyoko Saito
Apr 29, 2009·Pharmacotherapy·Paul P DobeshEmily L Persson
Oct 30, 2004·Medicine and Science in Sports and Exercise·Irena ZwierskaJohn M Saxton

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