The estimation of gait temporal parameters with wearable inertial measurement units (IMU) has been a research topic of interest in clinical gait analysis. Several methods, based on the use of a single IMU, have been proposed for their estimate, showing in most cases a sufficiently low number of missed and extra events and a satisfactory accuracy when applied to the gait of healthy subjects. In this study, we hypothesized that the same does not hold for abnormal gait. Some of the methods were applied to the gait of a group of hemiparetic subjects and to a group of healthy elderly. The results confirmed the hypothesis since, when applied to the hemiparetic subjects gait, all methods showed a) a higher number of missed and extra gait events detected by all tested methods, b) a significantly lower accuracy in estimating both gait events and temporal parameters. Errors in estimating gait temporal parameters were not significantly different among methods.

Comparison of different methods for the estimation of gait temporal parameters using a single inertial sensor mounted on the lower trunk: Application to elderly and hemiparetic subjects / Trojaniello, D.; Cereatti, A.; Mori, L.; Ravaschio, A.; Della Croce, U.. - (2014), pp. 874-879. ((Intervento presentato al convegno 20th IMEKO TC4 Symposium on Measurements of Electrical Quantities: Research on Electrical and Electronic Measurement for the Economic Upturn, Together with 18th TC4 International Workshop on ADC and DCA Modeling and Testing, IWADC 2014 tenutosi a University of Sannio, ita nel 2014.

Comparison of different methods for the estimation of gait temporal parameters using a single inertial sensor mounted on the lower trunk: Application to elderly and hemiparetic subjects

Trojaniello D.;Cereatti A.;Della Croce U.
2014

Abstract

The estimation of gait temporal parameters with wearable inertial measurement units (IMU) has been a research topic of interest in clinical gait analysis. Several methods, based on the use of a single IMU, have been proposed for their estimate, showing in most cases a sufficiently low number of missed and extra events and a satisfactory accuracy when applied to the gait of healthy subjects. In this study, we hypothesized that the same does not hold for abnormal gait. Some of the methods were applied to the gait of a group of hemiparetic subjects and to a group of healthy elderly. The results confirmed the hypothesis since, when applied to the hemiparetic subjects gait, all methods showed a) a higher number of missed and extra gait events detected by all tested methods, b) a significantly lower accuracy in estimating both gait events and temporal parameters. Errors in estimating gait temporal parameters were not significantly different among methods.
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11388/241597
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