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    Wyświetlanie 1-3 z 3
    Tytuł:
    Kinematic gait analysis in children with valgus deformity of the hindfoot
    Autorzy:
    Svoboda, Z.
    Honzikova, L.
    Jaroszczuk, S.
    Vidal, T.
    Martinaskova, E.
    Powiązania:
    https://bibliotekanauki.pl/articles/306230.pdf
    Data publikacji:
    2014
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    chód
    płaskostopie
    kinematyka
    biomechanika
    walking
    calcaneal eversion
    heel
    flat foot
    biomechanics
    Opis:
    Deformities of the feet in children can influence not only optimal foot development but also the development of other body segments. The aim of the study was to compare the hip and pelvis kinematics in groups of children with and without valgus deformity of the hindfoot. Three groups of children participated in the study: bilateral hindfoot valgosity (11 children, age 5.4±1.4 years), unilateral hindfoot valgosity (14 children, age 5.6±1.6 years) and the control group (8 children). Hindfoot valgus was measured clinically during standing. Hindfoot valgosity was considered in the range of 6 to 20 degrees. Kinematic data from five trials for each child was obtained using the Vicon MX system (six infrared cameras, frequency 200 Hz, Vicon Motion Systems, Oxford, UK). The results of our study showed significantly higher pelvic anteversion during the whole gait cycle for both unilateral and bilateral hindfoot valgosity children and significantly higher hip external rotation during the first half of the stance phase in bilateral deformity. The differences in the hip and pelvis kinematics, when compared to the control group, are higher for the group with bilateral deformity than in the group with unilateral deformity.
    Źródło:
    Acta of Bioengineering and Biomechanics; 2014, 16, 3; 89-93
    1509-409X
    2450-6303
    Pojawia się w:
    Acta of Bioengineering and Biomechanics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Assessment of postural stability in stable and unstable conditions
    Autorzy:
    Janura, M.
    Bizovska, L.
    Svoboda, Z.
    Cerny, M.
    Zemkova, E.
    Powiązania:
    https://bibliotekanauki.pl/articles/307489.pdf
    Data publikacji:
    2017
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    balansowanie
    biomechanika
    platforma siłowa
    niezawodność
    balance
    biomechanics
    force plate
    reliability
    wobble board
    Opis:
    The aim of the study was to determine whether it is possible to assess static balance on an unstable surface using center of pressure velocities obtained with a force platform when standing on a wobble board. Methods: The center of pressure velocities were recorded with a force platform within three days (four trials per day) in thirty young adults in three conditions: standing on a rigid surface, compliant surface, and on a wobble board. Reliability of mean velocities of the center of pressure was examined using intraclass correlation coefficients. Relationships between the three conditions were assessed with Pearson correlation coefficients. Results: Intra-session reliability was excellent for standing on a rigid surface and on a compliant surface and good for standing on a wobble board. Inter-session reliability was good for all parameters in all conditions, except for poor reliability in the anterior-posterior direction in standing on a wobble board. All correlations between the same parameter in different conditions were statistically significant (P < 0.05), except for velocity of the center of pressure in the anterior-posterior direction between stance on a rigid surface and stance on a wobble board. Conclusions: Centre of pressure velocity parameters obtained with a force plate when standing on a wobble board can provide valuable information about postural stability in unstable conditions.
    Źródło:
    Acta of Bioengineering and Biomechanics; 2017, 19, 4; 89-94
    1509-409X
    2450-6303
    Pojawia się w:
    Acta of Bioengineering and Biomechanics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The differences between overground and treadmill walking in nonlinear, entropy-based and frequency variables derived from accelerometers in young and older women : preliminary report
    Autorzy:
    Bizovska, L.
    Svoboda, Z.
    Kubonova, E.
    Vuillerme, N.
    Hirjakova, Z.
    Janura, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/307504.pdf
    Data publikacji:
    2018
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    starzenie
    chód
    stabilność
    stateczność dynamiczna
    ageing
    gait
    stability
    variability
    local dynamic stability
    Opis:
    The aim of this study was to compare gait stability and variability between walking conditions and age groups. Methods: Twenty-six healthy younger and older females participated. Trunk acceleration in the vertical (V), medial-lateral (ML) and anteriorposterior (AP) directions during 5 minutes walking overground and 3 minutes walking on the treadmill at self-selected speed were recorded. Root mean square and standard deviations of acceleration, stride time and its variability, Lyapunov exponents (LE), multiscale entropy (MSE) and harmonic ratios (HR) were computed. Results: Both age groups showed significantly higher stride time variability and short-term LE in all directions during overground walking. For the older group, overground walking showed higher V and AP standard deviation. Significantly lower values for overground walking were observed for long-term LE (V and ML for the younger group, ML for the older group), HR (ML for the older group) and MSE (V for the older group). Significant age-related differences were found for V long-term LE for overground walking. Conclusions: The present findings suggest that both linear and advanced computational techniques for gait stability and variability assessment in older adults are sensitive to walking conditions.
    Źródło:
    Acta of Bioengineering and Biomechanics; 2018, 20, 1; 93-100
    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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