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    Wyświetlanie 1-3 z 3
    Tytuł:
    The effect of height and BMI on computer dynamic posturography parameters in women
    Autorzy:
    Olchowik, G.
    Tomaszewski, M.
    Olejarz, P.
    Warchoł, J.
    Różańska-Boczula, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/306636.pdf
    Data publikacji:
    2014
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    kobieta
    postura
    wzrost
    BMI
    women
    computerised dynamic
    posturography
    height
    Opis:
    The human body’s posture control is a complex system of organs and mechanisms which controls the body’s centre of gravity (COG) over its base of support (BOS). Computerised Dynamic Posturography (CDP) allows for the quantitativeand objective assessment of the sensory and motor components of the body’s posture control system as well as of the integration and adaptation mechanisms in the central nervous system. The aim of this study was to assess the relationships between the body’s height and BMI on CDP results in a group of young healthy women without any clinical symptoms of balance disorders. It was found that the MS depended significantly on the height and BMI of the subjects as well as on the SOT conditions. As the height and BMI increased the MS value decreased. The postural response latency (LC) in the MCT statistically significantly depended only on height and showed a positive correlation. The postural response latency increased with height. The postural response amplitude for both right and left lower limbs significantly depended on height and BMI, but only for the backward movement of the platform. The response amplitude for all platform translations under all MCT conditions increased with height and BMI. The body’s resultant imbalance caused by the platform perturbations in the ADT were greater in shorter people and those with a lower BMI.
    Źródło:
    Acta of Bioengineering and Biomechanics; 2014, 16, 4; 53-58
    1509-409X
    2450-6303
    Pojawia się w:
    Acta of Bioengineering and Biomechanics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Numerical and experimental analysis of balloon angioplasty impact on flow hemodynamics improvement
    Autorzy:
    Tomaszewski, Michał
    Sybilski, Kamil
    Małachowski, Jerzy
    Wolański, Wojciech
    Buszman, Piotr P.
    Powiązania:
    https://bibliotekanauki.pl/articles/27324133.pdf
    Data publikacji:
    2020
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    angioplasty
    stent
    artery
    hemodynamics
    cfd analysis
    PIV method
    angioplastyka
    tętnica
    hemodynamika
    analiza CFD
    metoda PIV
    Opis:
    Purpose: The paper focuses on the numerical and experimental evaluation of the fluid flow inside chosen fragments of blood vessels. In the first stage of the study, the experimental tests were conducted using a research test stand, designed to be used in this evaluation. The study evaluated the blood flow through a silicone vessel with an implanted coronary stent. Methods: The PIV method was used in order to visualize the flow vectors inside a silicone vessel. Deformed vessel geometry implemented for computational fluid dynamics purposes was obtained owing to a non-linear simulation of the stent expansion (angioplasty process) in a silicone vessel. Additionally, a vessel model with a statistical 55% area stenosis and an irregular real vessel with an atherosclerotic plaque were also subjected to analysis from the hemodynamic flow point of view. A vessel with a statistical stenosis was also used to simulate the angioplasty process, which resulted in obtaining a flow domain for the vessel with an atherosclerotic plaque after the stent implantation. Results: For each case, distributions of parameters such as OSI or TAWSS were also analyzed and discussed. The areas of low TAWSS values appear close to the stent struts. Conclusions: Stents with increased diameters, compared to the normal vessel diameter, create a higher risk of occurrence of the areas with low WSS values. Excessive stent deformation can cause inflammation by injuring the vessel and can initiate the restenosis and thrombotic phenomena through the increased vessel diameter.
    Źródło:
    Acta of Bioengineering and Biomechanics; 2020, 22, 3; 169--183
    1509-409X
    2450-6303
    Pojawia się w:
    Acta of Bioengineering and Biomechanics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The human balance system and gender
    Autorzy:
    Olchowik, G.
    Tomaszewski, M.
    Olejarz, P.
    Warchoł, J.
    Różańska-Boczula, M.
    Maciejewski, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/306531.pdf
    Data publikacji:
    2015
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    wzrost
    waga
    BMI
    gender
    kobieta
    mężczyzna
    computerised dynamic posturography
    height
    weight
    women
    men
    Opis:
    The human body balance system is a complex system of organs and mechanisms, which generate postural reactions to counter the displacement from the equilibrium position of the body centre of gravity, and which control eye movement in order to maintain a stable image of the environment. Computerised Dynamic Posturography (CDP) allows for a quantitative and objective assessment of the sensory and motor components of the body balance control system as well as of the integration and adaptive mechanisms in the central nervous system. The aim of this study was to determine the differences, when maintaining body balance, based on the gender of young, healthy people using CDP. The study was carried out on a group of 43 healthy subjects by comparing the effectiveness of the balance system in 22 women and 21 men aged between 20 and 26 years, between 171 and 177 cm in height, and without any clinical symptoms of balance disorders. The men and women were selected such that they did not differ significantly in height and BMI. Using the Equitest posturograph manufactured by NeuroCom International Inc. the following tests were performed: Sensory Organisation Test (SOT), Motor Control Test (MCT) and the Adaptation Test (ADT). The gender of young healthy individuals without any clinical symptoms of balance disorders also does not affect the effectiveness of the sensory system and the use of this signal in maintaining body balance.
    Źródło:
    Acta of Bioengineering and Biomechanics; 2015, 17, 1; 69-74
    1509-409X
    2450-6303
    Pojawia się w:
    Acta of Bioengineering and Biomechanics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-3 z 3

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