Reproducibility of plantar pressure distribution data in barefoot running

Christian Maiwald, Stefan Grau, Inga Krauss, Marlene Mauch, Detlef Axmann, Thomas Horstmann

Research output: Contribution to journalArticlepeer-review

20 Scopus citations

Abstract

The aim of this study was to provide detailed information on rationales, calculations, and results of common methods used to quantify reproducibility in plantar pressure variables. Recreational runners (N = 95) performed multiple barefoot running trials in a laboratory setup, and pressure variables were analyzed in nine distinct subareas of the foot. Reproducibility was assessed by calculating intraclass correlation coefficients (ICC) and the root mean square error (RMSE). Intraclass correlation coefficients ranged from 0.58 to 0.99, depending on the respective variable and type of ICC. Root mean square errors ranged between 2.3 and 3.1% for relative force-time integrals, between 0.07 and 0.23 for maximum force (Fmax), and between 107 and 278 kPa for maximum pressure (Pmax), depending on the subarea of the foot. Force-time integral variables demonstrated the best within-subject reproducibility. Rear-foot data suffered from slightly increased measurement error and reduced reproducibility compared with the forefoot.

Original languageEnglish
Pages (from-to)14-23
Number of pages10
JournalJournal of Applied Biomechanics
Volume24
Issue number1
DOIs
StatePublished - Feb 2008
Externally publishedYes

Keywords

  • Biomechanics
  • Gait analysis
  • ICC
  • RMSE
  • Variability

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