Validation of Different Filters for Center of Pressure Measurements by a Cross-Section Study
The measurement of the center of pressure (CoP) is one of the most frequently used quantitative methods for quantifying postural performance. Due to the complexity and the high biological variability of the postural control loop, a large number of different methods and parameters have been establish...
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doaj-319b713e2a8f48b2b08e7d43dfe4d1102020-11-25T01:33:10ZengMDPI AGTechnologies2227-70802019-09-01746810.3390/technologies7040068technologies7040068Validation of Different Filters for Center of Pressure Measurements by a Cross-Section StudyJan Jens Koltermann0Martin Gerber1Heidrun Beck2Michael Beck3University Center for Orthopedic and Trauma Surgery, Faculty of Medicine Carl Gustav Carus, Technische Universität Dresden, 01307 Dresden, GermanySLG Prüf- und Zertifizierungs GmbH, Medical Devices and Laser Safety, 09232 Hartmannsdorf, GermanyUniversity Center for Orthopedic and Trauma Surgery, Faculty of Medicine Carl Gustav Carus, Technische Universität Dresden, 01307 Dresden, GermanyInstitute of Electrical Systems and Energy Logistics, Faculty of Mechanical Engineering, Electrical and Energy Systems, Brandenburg University of Technology Cottbus-Senftenberg, 01968 Senftenberg, GermanyThe measurement of the center of pressure (CoP) is one of the most frequently used quantitative methods for quantifying postural performance. Due to the complexity and the high biological variability of the postural control loop, a large number of different methods and parameters have been established to describe the CoP process. Furthermore, the methodological conditions such as the foot position, visual condition, sampling duration, and the data processing also have a relevant influence on the measurement results. In addition, there are various methods for recording the pressure curve, which differ in particular with regard to the filters used, the frequencies, and measurement times. The aim of the present study was the methodical comparison between different digital filters, measurement frequencies and times, and their effects on the CoP process based on a healthy reference group. The data acquisition was done with LabVIEW and the data storage was organized in a subject oriented data structure. Based on the presented results it could be seen that with a different dominant frequency in the spectrum of the group of test persons, certain filter types are required for the processing of CoP data. In the sampling range from 300 Hz to 1 kHz in the bipedal stand and 600 Hz to 1 kHz in the monopedal stand, the choice of measurement frequency had no influence on the filter result.https://www.mdpi.com/2227-7080/7/4/68CoPforce plateAMTIKistlercenter of pressurepostural controlbalancefilterButterworthsampling duration effect |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Jan Jens Koltermann Martin Gerber Heidrun Beck Michael Beck |
spellingShingle |
Jan Jens Koltermann Martin Gerber Heidrun Beck Michael Beck Validation of Different Filters for Center of Pressure Measurements by a Cross-Section Study Technologies CoP force plate AMTI Kistler center of pressure postural control balance filter Butterworth sampling duration effect |
author_facet |
Jan Jens Koltermann Martin Gerber Heidrun Beck Michael Beck |
author_sort |
Jan Jens Koltermann |
title |
Validation of Different Filters for Center of Pressure Measurements by a Cross-Section Study |
title_short |
Validation of Different Filters for Center of Pressure Measurements by a Cross-Section Study |
title_full |
Validation of Different Filters for Center of Pressure Measurements by a Cross-Section Study |
title_fullStr |
Validation of Different Filters for Center of Pressure Measurements by a Cross-Section Study |
title_full_unstemmed |
Validation of Different Filters for Center of Pressure Measurements by a Cross-Section Study |
title_sort |
validation of different filters for center of pressure measurements by a cross-section study |
publisher |
MDPI AG |
series |
Technologies |
issn |
2227-7080 |
publishDate |
2019-09-01 |
description |
The measurement of the center of pressure (CoP) is one of the most frequently used quantitative methods for quantifying postural performance. Due to the complexity and the high biological variability of the postural control loop, a large number of different methods and parameters have been established to describe the CoP process. Furthermore, the methodological conditions such as the foot position, visual condition, sampling duration, and the data processing also have a relevant influence on the measurement results. In addition, there are various methods for recording the pressure curve, which differ in particular with regard to the filters used, the frequencies, and measurement times. The aim of the present study was the methodical comparison between different digital filters, measurement frequencies and times, and their effects on the CoP process based on a healthy reference group. The data acquisition was done with LabVIEW and the data storage was organized in a subject oriented data structure. Based on the presented results it could be seen that with a different dominant frequency in the spectrum of the group of test persons, certain filter types are required for the processing of CoP data. In the sampling range from 300 Hz to 1 kHz in the bipedal stand and 600 Hz to 1 kHz in the monopedal stand, the choice of measurement frequency had no influence on the filter result. |
topic |
CoP force plate AMTI Kistler center of pressure postural control balance filter Butterworth sampling duration effect |
url |
https://www.mdpi.com/2227-7080/7/4/68 |
work_keys_str_mv |
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