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Reproducibility of the Physiological Cost Index among Individuals with a Lower-Limb Amputation and Healthy Adults by Kerstin Hagberg; Roy Tranberg; Roland Zügner; Anna Danielsson is a Medicine article available to read on EtoBox.

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## Abstract **Background and Purpose.** The physiological cost index (PCI) is a clinical measurement used to estimate the energy cost of walking. The reproducibility of the PCI has been questioned and no study has investigated the measurement error among individuals with a lower‐limb amputation. The aim was to investigate the test–retest reproducibility of the PCI in individuals with a lower‐limb amputation and healthy adults. **Methods.** The study comprised 28 individuals (20 males, eight females, mean age 49 years) with a unilateral amputation due to reasons other than vascular disease and 31 healthy volunteers (20 males, 11 females, mean age 47 years). PCI values were obtained by registering heart rate at rest and during level indoor walking for 5 minutes at a comfortable speed. A within‐day test–retest assessment was performed. Reproducibility analyses included intra‐class correlation, analyses of systematic differences between measurements, calculation of the smallest detectable change (SDC) and coefficient of variation (CV), and the results were finally visualized using Bland–Altman plots. **Results.** The reliability in terms of intra‐class correlation was excellent for bot

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Author

Kerstin Hagberg; Roy Tranberg; Roland Zügner; Anna Danielsson

Publisher

John Wiley and Sons; Wiley (John Wiley & Sons); Wiley-Blackwell; Wiley; Research Square (ISSN 1358-2267)

Published

2010

Language

EN

Field

Medicine (Health Sciences)