Powiadomienia systemowe
- Sesja wygasła!
- Sesja wygasła!
Tytuł artykułu
Autorzy
Wybrane pełne teksty z tego czasopisma
Identyfikatory
Warianty tytułu
Języki publikacji
Abstrakty
One of the methods used in clinical setting to assess the balance function is the measurement of the centre of pressure trajectory (COP). The COP trajectory is strongly dependent on the body centre of mass trajectory (COM), but in case of balance problems the corrective signals influence this dependence. The aim of the present study is to explore the possibility of using power spectral density function of the COP vs. COM signal in assessing the amount of correction signals. As the aim was a methodological one, only one healthy adult subject participated in the study. This subject performed five balance tasks of increasing difficulty. The COP trajectory was recorded using the Kistler force plate, and COM trajectory was calculated based on the marker trajectories placed on the subject’s body and simultaneously recorded with VICON 460 system. The COM data were subtracted from COP trajectory in anteroposterior (AP) and lateral direction. Next the power spectral density (PSD) was calculated for the new signals. The power spectral density is very low for easiest condition, but increases with the difficulty of task. Moreover, it also provides information in which plane (sagittal or frontal) more correction movements are needed to maintain stability.
Słowa kluczowe
Czasopismo
Rocznik
Tom
Strony
89--92
Opis fizyczny
Bibliogr. 8 poz., il.
Twórcy
autor
autor
- Department of Paediatric Rehabilitation, The Children’s Memorial Health Institute, Warsaw, Poland, m.syczewska@czd.pl
Bibliografia
- [1] BROWNE J.E., O'HARE N.J., Review of the different methods for assessing standing balance, Physiotherapy, 2001, 87, 489-495.
- [2] TSAI C.L., WU S.K., HUANG C.H., Static balance in children with developmental coordination disorder, Hum. Mov. Sci., 2008, 27, 142-153.
- [3] FERDJALLAH M., HARRIS G.F., SMITH P., WERTSCH J.J., Analysis of postural control synergies during quiet standing in healthy children and children with cerebral palsy, Clin. Biomech., 2002, 17, 203-210.
- [4] SYCZEWSKA M., DEMBOWSKA-BAGIŃSKA B., PEREK-POLNIK M., KALINOWSKA M., PEREK D., Postural sway in children and young adults, survivors of CNS tumours, Adv. Med. Sci., 2008, 53, 256-262.
- [5] LEBIEDOWSKA M., SYCZEWSKA M., Invariant sway properties in children, Gait & Posture, 2000, 12, 200-204.
- [6] GATEV P., THOMAS S., KEPPLE T., HALLETT M., Feedforward ankle startergy of balance during quiet stance in adults, J. Physiol., 1999, 514, 915-928.
- [7] BŁASZCZYK J.W., Sway ratio - a new measure for quantifying postural stability, Acta Neurobiologiae Experimentalis, 2008, 68, 51-57.
- [8] KRAUSS T.P., SHURE L., LITTLE J.N., Signal processing toolbox for use with MATLAB, 1993, The Math Works Inc.
Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-article-BPBA-0009-0044