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Evaluation of postural stability
Šalamoun, Jan ; Janoušek, Oto (referee) ; Koťová, Markéta (advisor)
The topic of this bachelor’s thesis is Evaluation of postural stability. Measuring is provided by balance board Nintendo Wii Balance Board and force platform produced by Zebris. In the first part are explained basic terms and parameters which are necessary for evaluation of postural stability. Next part includes design of a suitable protocol for evaluation of postural stability by balance board and force platform. According to the protocol i received data from sufficient number of volunteers. In next part i create aplication in Matlab which can load and evaluate data obtained from probands. In the end i compare devices and evaluate obtained results.
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Methods for the evaluation of postural stability
Nevěčná, Leona ; Janoušek, Oto (referee) ; Koťová, Markéta (advisor)
This study deals with methods for evaluation of postural stability. The main problem of posturography is lack of standardization in measurement and evaluation. There are presented some parameters affecting postural stability that are often taken into account. Those are parameters that might be changed while measuring, for example standing position, sampling duration or visual control. And others that are altered when evaluating is taking place, variability of those parameters, is much greater. Measurement protocol taking into account the most promising parameters was put together based on literary search. Changes in COP of ten subjects were measured with Wii Balance Board, according to the proposed measurement protocol. The data acquired from a particular subject were used to count values of parameters used in evaluation. After that the values were statistically analyzed. To compare each parameter, trajectory with good results according to other literature was chosen to pose as a reference. Final result is comparison firstly between importance of changes in parameters of measuring and secondly between success of detection of those changes of separate parameters.
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Determining motion using accelerometer data
Montilla, Michaela ; Koťová, Markéta (referee) ; Janoušek, Oto (advisor)
The aim of this thesis is to present the topic of acceleration record using accelerometer sensors and to create a program for the transformation of the acceleration data into the position vector. It is a summary of theoretical background of data recording using sensors of acceleration and an overview of the physical relationships between acceleration, velocity and position. The data was recorded by multiple types of sensors. The gist of the algorithm is a mathematical realization of physical relations modifying the conversion of acceleration to the position. The outcome enables to display a dynamic graphic output in 3-D.
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The variability of the distribution of pressure forces on the foot with coupling EMG
Semeráková, Nikola ; Kolářová, Jana (referee) ; Koťová, Markéta (advisor)
The bachelor work is focused on the distribution of pressure forces in the area of the foot with support from electromyography. Part of the work deals with the physiology of leg muscles and where the groups of muscles responsible for standing are defined. After that the thesis focuses on postural stability, the foot vault and biomechanical parameters. Additionally, there's the defining of the principles of electromyography and dynamic pavement. Furthermore, the thesis focused on describing how the data is processed, first from elektromyograph and then from dynamic pavement. Finally, there are outcomes from these devices, which are compared and evaluated,there are also partial parameters for electromyography and for the dynamic pavement.
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Gait analysis using EMG signals
Korčáková, Ivona ; Janoušek, Oto (referee) ; Koťová, Markéta (advisor)
This bachelors thesis is focused on the analysis of gait using EMG signals. It includes the physiology of a muscular system, with a focus on the lower limb. Bipedal walking consist of ste system that are described and explained also with the movements of the joints. Another chapter is dedicated of Electromyography and this application to the walk analysis. This thesis also includes designing a custom program enabling dataprocessing. Thi final chapter focuses od the data processing. The final chapter focuses on the data analysis and its evaluation.
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Biofeedback using 3D scanners
Vačkářová, Klára ; Koťová, Markéta (referee) ; Žalud, Luděk (advisor)
This bachelor thesis focuses on the matter of the Microsoft Kinect sensor application within biomedical field. In the first theoretical part of the thesis general knowledge of sensors are mentioned; Microsoft Kinect is described thoroughly. The second part deals with the practical realisation of the program, which with help of visual biofeedback informs patients, whether they perform given movement properly or not. For this purpose three exercises were chosen. In the final part the methodology of realized measurements is described and as well as the measurement evaluation.
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Font size adjustment based on distance detection
Brunclík, Robert ; Koťová, Markéta (referee) ; Janoušek, Oto (advisor)
The thesis deals with automatic control the font size by the distance from the reader. It includes theoretical acquaintance with the face detection and subsequent tracking of the detected area during the scene. Furthermore, there is a comparison of the tracking algorithms. Then the calculation of distance is decribed. It is based on the user’s calibration and based on the outcome occurs the font size is automatically corrected. There is also a description of a separate application Automatical controller of the text size, with the recommended settings of the program.
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X-ray computed tomography artifacts simulation
Koťová, Markéta ; Kolář, Radim (referee) ; Drastich, Aleš (advisor)
The bachelor's thesis deals with CT artifacts modeling generated during the acquisition process. The theoretical part summarizes principles of CT and origin of artifacts. The practical part consists of a newly developed simulator, which includes ring, motion, metal, streak and aliasing artifacts. Finally, the new laboratory exercise was designed.
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Breath monitoring during motion therapy
Koťová, Markéta ; Bubník, Karel (referee) ; Kolářová, Jana (advisor)
This semestral thesis deals with continuous monitoring of pulmonary ventilation during the patients' theraphy and focuses especially on monitoring of their ventilation processes. It is necessarry to detect, monitor and differentiate abdominal and thoracic breathing during the theraphy. This thesis describes the very basic and common method, a spirometry. Next, an overview of more advanced state-of-the-art methods based on both, tactile and proximity principles is given. In addition to that, two recently developed methods by BUT are discussed as well -- a tactile-based measurement similar to blood pressure sensor and a proximity-based measurement method employing TOF cameras. The data acquired by these two methods are proccesed and examined in order to evaluate and justify their performance in a real application.
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