scholarly journals Investigation of the Correlation between Factors Influencing the Spectrum of Center of Pressure Measurements Using Dynamic Controlled Models of the Upright Stand and Subject Measurements

2020 ◽  
Vol 10 (11) ◽  
pp. 3741
Author(s):  
Jan Jens Koltermann ◽  
Heidrun Beck ◽  
Michael Beck
Keyword(s):  
Back Pain ◽  
Power Density ◽  
Quantitative Methods ◽  
Dynamic Models ◽  
Center Of Pressure ◽  
Reference Group ◽  
Upper Body ◽  
Power Density Spectrum ◽  
Density Spectrum ◽  
Pain Patients

Measuring of the center of pressure (CoP) is one of the most frequently used quantitative methods for quantifying postural performance. The aim of the study is to describe differentiation criteria in the CoP-track for the clinical picture of chronic unspecific back pain. In this study, dynamic models loaded with multi-variable controls are used to determine whether biomechanical questions for upright posture can be answered. These models are particularly well suited for investigating the kinematics and the influence of the influencing disturbance variables. These investigations are extended by power density spectrum (PSD) analyses of CoP measurements on 590 subjects with and without chronic non-specific back pain. Pain patients show an average of 0.5 Nm2 more area under the spectrum than the pain-free reference group. In the power density spectrum different frequency ranges can be assigned to specific body oscillation. Among others, the frequency range between 0.5–0.8 Hz corresponds to the hip movement. In the range around 0.2 Hz, the movements are reflected in the upper body. Patients with back pain experience less activity in certain, individual areas.

scholarly journals Validation of Different Filters for Center of Pressure Measurements by a Cross-Section Study

Technologies ◽  
2019 ◽  
Vol 7 (4) ◽  
pp. 68 ◽  
Author(s):  
Koltermann ◽  
Gerber ◽  
Beck ◽  
Beck
Keyword(s):  
Data Storage ◽  
Quantitative Methods ◽  
Center Of Pressure ◽  
Reference Group ◽  
Dominant Frequency ◽  
Pressure Curve ◽  
Measurement Results ◽  
Sampling Duration ◽  
Foot Position ◽  
Postural Performance

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.

Postural balance in low back pain patients: Intra-session reliability of center of pressure on a portable force platform and of the one leg stand test

2011 ◽  
Vol 34 (2) ◽  
pp. 213-217 ◽  
Author(s):  
Thomas Maribo ◽  
Kristian Stengaard-Pedersen ◽  
Lone Donbæk Jensen ◽  
Niels Trolle Andersen ◽  
Berit Schiøttz-Christensen
Keyword(s):  
Low Back Pain ◽  
Back Pain ◽  
Postural Balance ◽  
Center Of Pressure ◽  
Force Platform ◽  
Low Back ◽  
Stand Test ◽  
The One ◽  
Pain Patients
Sign in / Sign up

Export Citation Format

Share Document