Efficacy of TtB-Based Visual Biofeedback in Upright Stance Trials
- C. D’AnnaAffiliated withDepartment of Engineering, University of Roma TRE
- , D. BibboAffiliated withDepartment of Engineering, University of Roma TRE
- , M. GoffredoAffiliated withDepartment of Engineering, University of Roma TRE
- , M. SchmidAffiliated withDepartment of Engineering, University of Roma TRE
- , S. ConfortoAffiliated withDepartment of Engineering, University of Roma TRE
Several studies have shown the effect of visual biofeedback (VBF) on postural control with real-time presentation of centre of pressure (CoP). However, up to now no study has yet focussed on the effect that a predictive VBF could have on postural control. The aim of this study is thus to determine whether the Time-to-Boundary function (TtB) could be used as an efficacious VBF in static posturography.
The CoP coordinates were extracted from force plate data and elaborated to calculate TtB in real-time.
Two groups of six healthy young subjects executed the protocol in two different sequences composed of the following conditions: noVBF-VBF1 (real-time presentation of CoP) and noVBF-VBF2 (real-time TtB presentation). Each condition was repeated three times.
The effect of the two VBFs was studied by five parameters extracted directly from CoP coordinates (sway area, sway path, mean amplitude, frequency bandwidth that contains 95% of the power spectral density of antero-posterior and medio-lateral displacement) and two parameters by fraction Brownian motion model (exponential radial terms Hrs and Hrl corresponding to the short-term and long-term region Hurst exponents).
The comparison between the VBF conditions didn’t show significant differences in the studied parameters. This evidence suggests that the participants react in similar way in both conditions, and it opens the possibility of using a predictive VBF as a tool to facilitate postural control in upright stance.
Keywordstime-to-boundary centre of pressure postural control visual biofeedback
- Efficacy of TtB-Based Visual Biofeedback in Upright Stance Trials
- Book Title
- XIII Mediterranean Conference on Medical and Biological Engineering and Computing 2013
- Book Subtitle
- MEDICON 2013, 25-28 September 2013, Seville, Spain
- Book Part
- Part XII
- pp 1755-1758
- Print ISBN
- Online ISBN
- Series Title
- IFMBE Proceedings
- Series Volume
- Series ISSN
- Springer International Publishing
- Copyright Holder
- Springer International Publishing Switzerland
- Additional Links
- centre of pressure
- postural control
- visual biofeedback
- Industry Sectors
- eBook Packages
- Editor Affiliations
- 6. Biomedical Engineering Group, Engineering School of the University of Seville
- Author Affiliations
- 7. Department of Engineering, University of Roma TRE, via Vito Volterra 62, 00146, Rome, Italy
To view the rest of this content please follow the download PDF link above.