Title: Pattern description and reliability parameters of six force-time related indices measured with plantar pressure measurements
Authors: Deschamps, Kevin ×
Roosen, Philip
Bruyninckx, Herman
Desloovere, Kaat
Deleu, Paul-Andre
Matricali, Giovanni
Peeraer, Louis
Staes, Filip #
Issue Date: Sep-2013
Publisher: Butterworth-Heinemann
Series Title: Gait & posture vol:38 issue:4 pages:824-829
Article number: S0966-6362(13)00192-6
Abstract: BACKGROUND: Functional interpretation of plantar pressure measurements is commonly done through the use of ratios and indices which are preceded by the strategic combination of a subsampling method and selection of physical quantities. However, errors which may arise throughout the determination of these temporal indices/ratio calculations (T-IRC) have not been quantified. The purpose of the current study was therefore to estimate the reliability of T-IRC following semi-automatic total mapping (SATM). METHODS: Using a repeated-measures design, two experienced therapists performed three subsampling sessions on three left and right pedobarographic footprints of ten healthy participants. Following the subsampling, six T-IRC were calculated: Rearfoot-Forefoot_fti, Rearfoot-Midfoot_fti, Forefoot medial/lateral_fti, First ray_fti, Metatarsal 1-Metatarsal 5_fti, Foot medial-lateral_fti. FINDINGS: Patterns of the T-IRC were found to be consistent and in good agreement with corresponding knowledge from the literature. The inter-session errors of both therapists were similar in pattern and magnitude. The lowest peak inter-therapist error was found in the First ray_fti (6.5a.u.) whereas the highest peak inter-therapist error was observed in the Forefoot medial/lateral_fti (27.0a.u.) The magnitude of the inter-session and inter-therapist error varied over time, precluding the calculation of a simple numerical value for the error. The difference between both error parameters of all T-IRC was negligible which underscores the repeatability of the SATM protocol. CONCLUSION: The current study reports consistent patterns for six T-IRC and similar inter-session and inter-therapist error. The proposed SATM protocol and the T-IRC may therefore serve as basis for functional interpretation of footprint data.
ISSN: 0966-6362
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Research Group for Musculoskeletal Rehabilitation
Organ Systems (+)
× corresponding author
# (joint) last author

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