نبذة مختصرة : International audience; Estimating the foot center of pressure (CoP) position by pressure insoles appears to be aninteresting technical solution to perform motion analysis beyond the force platforms surface area. Theaim of this study was to estimate the CoP position from Moticon® pressure insoles during sidestepcuts, runs and walks. The CoP positions assessed from force platform data and from pressure insoledata were compared. One calibration trial performed on the force platforms was used to localizethe insoles in the reference coordinate system. The most accurate results were obtained when themotion performed during the calibration trial was similar to the motion under study. In such a case,mean accuracy of CoP position have been evaluated to 15 4 mm along anteroposterior (AP) axisand 8.5 3 mm along mediolateral (ML) axis for sidestep cuts, 18 5 mm along AP axis and7.3 4 mm along ML axis for runs, 15 6 mm along AP axis and 6.6 3 mm along ML axisfor walks. The accuracy of the CoP position assesment from pressure insole data increased with thevertical force applied to the pressure insole and with the number of pressure cells involved.
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