title: Validation and reliability testing of a new, fully integrated gait analysis insole.
abstract: BACKGROUND
  A new tool (OpenGo, Moticon GmbH) was introduced to continuously measure kinetic and temporospatial gait parameters independently through an insole over up to 4 weeks. The goal of this study was to investigate the validity and reliability of this new insole system in a group of healthy individuals.
  
  
  METHODS
  Gait data were collected from 12 healthy individuals on a treadmill at two different speeds. In total, six trials of three minutes each were performed by every participant. Validation was performed with the FDM-S System (Zebris). Complete sensor data were used for a within test reliability analysis of over 10000 steps. Intraclass correlation was calculated for different gait parameters and analysis of variance performed.
  
  
  RESULTS
  Intraclass correlation for the validation was >0.796 for temporospatial and kinetic gait parameters. No statistical difference was seen between the insole and force plate measurements (difference between means: 36.3 ± 27.19 N; p = 0.19 and 0.027 ± 0.028 s; p = 0.36). Intraclass correlation for the reliability was >0.994 for all parameters measured.
  
  
  CONCLUSIONS
  The system is feasible for clinical trials that require step by step as well as grouped analysis of gait over a long period of time. Comparable validity and reliability to a stationary analysis tool has been shown.
authors.affiliation: Department of Trauma, Hand and Reconstructive Surgery, Saarland University, Building 57, Kirrbergerstr. 1, 66421 Homburg, Germany.
authors.forename: Benedikt Johannes
authors.initials: BJ
authors.lastname: Braun
authors.affiliation: Department of Trauma, Hand and Reconstructive Surgery, Saarland University, Building 57, Kirrbergerstr. 1, 66421 Homburg, Germany.
authors.forename: Nils Thomas
authors.initials: NT
authors.lastname: Veith
authors.affiliation: Department of Trauma, Hand and Reconstructive Surgery, Saarland University, Building 57, Kirrbergerstr. 1, 66421 Homburg, Germany.
authors.forename: Rebecca
authors.initials: R
authors.lastname: Hell
authors.affiliation: BG Trauma Center, Department of Trauma Surgery, Eberhard Karls University Tübingen, Tübingen, Germany.
authors.forename: Stefan
authors.initials: S
authors.lastname: Döbele
authors.affiliation: Saarland University, Chair of Applied Mechanics, Saarbruecken, Germany.
authors.forename: Michael
authors.initials: M
authors.lastname: Roland
authors.affiliation: Department of Trauma, Hand and Reconstructive Surgery, Saarland University, Building 57, Kirrbergerstr. 1, 66421 Homburg, Germany.
authors.forename: Mika
authors.initials: M
authors.lastname: Rollmann
authors.affiliation: Department of Trauma, Hand and Reconstructive Surgery, Saarland University, Building 57, Kirrbergerstr. 1, 66421 Homburg, Germany.
authors.forename: Jörg
authors.initials: J
authors.lastname: Holstein
authors.affiliation: Department of Trauma, Hand and Reconstructive Surgery, Saarland University, Building 57, Kirrbergerstr. 1, 66421 Homburg, Germany.
authors.forename: Tim
authors.initials: T
authors.lastname: Pohlemann
keywords: Gait analysis; Integrated insole system; Reliability; Validation