Архив электронных ресурсов
[Зарегистрироваться]
 

eKhNUIR >
Механіко-математичний факультет >
Наукові роботи. Механіко-математичний факультет >

Пожалуйста, используйте этот идентификатор, чтобы цитировать или ссылаться на этот ресурс: http://dspace.univer.kharkov.ua/handle/123456789/3485

Название: Computerized posturography for data analysis and mathematical
Авторы: Kizilova, N.
Karpinsky, M.
Ключевые слова: biomechanical modelling
sway analysis
computerized posturography
medical diagnostics
spectral analysis
Дата публикации: 2007
Библиографическое описание: J.Vibroeng. v.9,N3
Реферат: Mechanisms of balance control are investigated on computerized posturography data on vertical two-legged and uncomfortable one-legged stance measured on healthy subjects. Oscillations of the centre of mass in the course of 30 s standing and the corresponding trajectories for a step forward off the force platform have been computed. Spectral analysis of the time series revealed three main harmonics for the studied postures. When a volunteer was balancing standing on one leg, all the harmonics were shifted towards the high frequencies and the sway amplitude was twice increased in comparison with comfortable two-legged vertical stance. Decomposition of the sway trajectories into the rambling and trembling components has been carried out. It was shown that in the course of the one-legged stance the balance control strategy includes ‘scanning’ of the larger area with bigger sway amplitudes in the vicinity of the stable state as compared to two-legged stance. A mathematical model of the body as a multi-link system is considered. Mass and inertia of each body segment and torques in joints are taken into consideration. The calculated own and forced frequencies of the model correspond to the spectral analysis of the posturography data. One-legged stance is proposed as an excellent tool for revealing the balance problems. It is shown that investigation of the oscillations and trajectories of the centre of mass for the step forward off the force platform is perspective for medical diagnostics to distinguish between the spine and joint pathologies.
URI: http://dspace.univer.kharkov.ua/handle/123456789/3485
Располагается в коллекциях:Наукові роботи. Механіко-математичний факультет

Файлы этого ресурса:

Файл Описание РазмерФормат
Karpinsky_Kizilova.pdf288,14 kBAdobe PDFЭскиз
Просмотреть/Открыть
Просмотр статистики

Все ресурсы в архиве защищены авторским правом, все права сохранены.

 

Valid XHTML 1.0! Яндекс цитирования DSpace Software Copyright   ©   2002-2008   MIT   and   Hewlett-Packard - Обратная связь