Static posturography provides an objective assessment of postural control by characterizing the body sway during upright standing. The center of pressure (COP) signal is recorded by a force platform, and it is analyzed by means of many different models and techniques. Most of the parameters calculated according to these different approaches are affected by relevant intra- and intersubject variability or do not have a clear physiological interpretation. Traditional approaches decompose the COP signal into anteroposterior and mediolateral time series, corresponding to ankle plantar/dorsiflexion and hip adduction/abduction, respectively. In this study we hypothesized that COP signals show inherent rotational characteristics. To verify our hypothesis we applied the rotary spectra analysis to the two-dimensional COP signal to decompose it into clockwise and counterclockwise rotational components. We demonstrated the presence of rotational components in the COP signal of healthy subjects, providing a reference data set of the spectral characteristics of these components.
Valentina Agostini, Emma Chiaramello and Marco Knaflitz
Daniel G. Miner, Brent A. Harper and Stephen M. Glass
(HS-SOT). The outcome variables of these 2 systems demonstrated large ranges for 95% LOA, indicating that these systems should not be used interchangeably. The most significant difference between these 2 systems is likely related to differences in static posturography compared with dynamic
Vincent Shieh, Ashwini Sansare, Minal Jain, Thomas Bulea, Martina Mancini and Cris Zampieri
, M. , Micarelli , A. , Viziano , A. , Pavone , I. , Costantini , G. , Casali , D. , & Saggio , G. ( 2017 ). Body-worn triaxial accelerometer coherence and reliability related to static posturography in unilateral vestibular failure . Acta Otorhinolaryngologica Italica, 37 ( 3 ), 231
Michelle R. Tanel, Tyler B. Weaver and Andrew C. Laing
. Howcroft J , Lemaire ED , Kofman J , McIlroy WE . Elderly fall risk prediction using static posturography . PLoS ONE . 2017 ; 12 ( 2 ): e0172398 . PubMed ID: 28222191 doi:10.1371/journal.pone.0172398 28222191 10.1371/journal.pone.0172398 12. Holliday PJ , Fernie GR , Gryfe CI