ISSN 1812-7231 Klin.inform.telemed. Volume 7, Issue 8, 2011, Pages 16-20
Yu. Lyakh, O. Gorshkov, V. Gurjanov, Yu. Vihovanets
M. Gorky Donetsk National Medical University, Donetsk, Ukraine
Human vertical posture mechanisms modeling
The paper reports of the fracrtal dimensionality analysis performed on a group of 184 healthy volunteers aged 18 up to 21. Within the framework of the "open-loop" and "close-loop" model, suggested by Collins J. J. and others. There were discovered two mechanisms of vertical posture support on time intervals of 0.20–0.50 s and 1.01–1.20 s. It is proved that the low Hurst exponent readings on time intervals 0.20–0.50 s correspond to much higher activity of the postural muscles. That could be explained by the fact that better trained muscles require less effort to preserve and support the vertical posture.
stabilometria, Hurst exponent, Stabilogram diffusion analysis, open-loop control, closed-loop control
Full-text version http://kit-journal.com.ua/en/viewer_en.html?doc/2011_8/lyakh_4.pdf