Open AccessInvestigating effects of force and pressure centre signals on stabilogram analysis
Author(s) -
Cetin Egehan,
Bilgin Suleyman
Publication year - 2019
Publication title -
iet science, measurement and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.418
H-Index - 49
eISSN - 1751-8830
pISSN - 1751-8822
DOI - 10.1049/iet-smt.2019.0078
Subject(s) - standard deviation , context (archaeology) , plane (geometry) , absolute deviation , mathematics , support vector machine , geodesy , statistics , acoustics , physics , computer science , artificial intelligence , geology , geometry , paleontology
In this study, the centre of pressure (COP x ) and force change ( F x ) in the anterior–posterior (AP) plane, the centre of pressure (COP y ) and force change ( F y ) signals in medial–lateral (ML) plane were compared. In order to make comparisons in this context, the time‐dependent norms of the COP x –COP y , and F x – F y signals ( F B , COP B ) of 163 subjects were calculated separately. Subsequently, the mean standard deviation values (F STD , COP STD ) of these values generated by time‐based were obtained. The scatter plots in the AP plane ( F x STD,COPx STD) and the ML plane ( F y STD,COPy STD) are presented in different categories, which depend on the standard deviation values, young‐elderly of the measurement group, the firm‐soft of the ground and open‐close of the eyes. Finally, the separation successes of F x STD− F y STDand COPx STD− COPy STDwere calculated by means of basic classification algorithms. According to the results obtained, it is observed that the force signals generally provide more successful results than COP signals. In the study, the highest accuracy was performed with force signals and the support vector machine algorithm separated the young‐aged group with an accuracy of 81.67%.