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The use of the Gait Variability Index for the evaluation of individuals after a stroke

Guzik A., Drużbicki M., Przysada G., Szczepanik M., Bazarnik-Mucha K., Kwolek A.

Acta of Bioengineering and Biomechanics

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2018

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Vol. 20, no. 2

171--177

EN

The Gait Variability Index (GVI) summarizes overall gait quality, taking into account spatiotemporal parameters from a 3-dimensional gait analysis. However, there are no studies evaluating changes in gait patterns after stroke, based on the GVI. The study was designed to assess usefulness of the GVI for evaluation of gait pathology in subjects with stroke, compared to healthy individuals. Methods: Spatiotemporal gait parameters were examined in a group of 50 subjects at a chronic stage post-stroke and in 50 healthy controls. The GVI was calculated based on the 9 spatiotemporal data. Results: The findings show statistically significant differences between the values of the GVI for paretic and non-paretic limbs ( p < 0.001). Higher values of the index were identified in the case of non-paretic limb: 80.74 vs. 76.32. The GVI scores were decreased for both paretic and non-paretic limbs, compared to the controls – p < 0.001. Conclusions: The GDI score seems to be a viable tool for quantifying changes in gait pattern during evaluation of subjects with chronic post-stroke hemiparesis. Further studies should be conducted to validate the use of GVI in the post-stroke population.

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Relationships between walking velocity and distance and the symmetry of temporospatial parameters in chronic post-stroke subjects

Guzik A., Drużbicki M., Przysada G., Kwolek A., Brzozowska-Magoń A., Sobolewski M.

Acta of Bioengineering and Biomechanics

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2017

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Vol. 19, no. 3

147--154

EN

Purpose: Subjects with post-stroke hemiparesis frequently present with asymmetric gait patterns. Symmetry, reflecting similarities in temporospatial, kinematic parameters, is an important measure of gait assessment. The study was designed to examine the relationships between asymmetry of temporal, spatial and kinematic gait parameters and walking velocity and distance. Methods: Temporospatial and kinematic gait parameters were examined in a group of 50 chronic post-stroke subjects and in a group of 25 healthy controls. Symmetry ratio was calculated for all the parameters. Gait velocity was measured during 10-metre test, the walking distance during 2-Minute Walk Test, and balance during Up&Go Test. Results: The relationship between stance phase duration symmetry and gait speed was at a moderate level (r = –0.43, p = 0.0173). There was a moderate relationship between swing phase symmetry and walking velocity and distance. The findings did not show a significant correlation between step length symmetry versus gait speed and distance. Conclusions: There is a mild relationship between self-selected gait velocity and walking distance versus temporal parameters symmetry. The findings do not confirm a relationship between self-selected gait velocity and walking distance versus spatial and kinematic parameters as well as balance. Likewise, no evidence confirms that asymmetry of temporal, spatial, kinematic gait parameters changes with the age of post-stroke subjects or is related to the length of time from stroke onset. Given the above, gait symmetry may be recognized as an important indicator of the level of gait control in post-stroke patients because it enables unique gait assessment, independent from other parameters.

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Evaluation of the impact of exercise of gait on a treadmill on balance of people who suffered from cerebral stroke

Drużbicki M., Przysada G., Guzik A., Kwolek A., Brzozowska-Magoń A., Sobolewski M.

Acta of Bioengineering and Biomechanics

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2016

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Vol. 18, no. 4

41--48

EN

Purpose: The aim of the study is to define the impact of exercise on a treadmill on static balance and stability of posture in a group of patients after cerebral stroke rehabilitated in a late period, with an application of a treadmill with the function of visual biofeedback. Methods: The examination was carried out in a group of 46 people in a late period after ischemic cerebral stroke. The patients examined were randomly put to a group with intervention (n = 23), in which a rehabilitation programme with an application of a treadmill with the visual feedback function was realized and to a control group (n = 23). They evaluated balance in standing on both feet by means of a force plate, symmetry of load of lower limbs and dynamic balance in Up & Go test. Results: A statistically significant change of stabilometric parameters was observed only in the area of postural sways of the centre of pressure (COP). A significant improvement of the symmetry of load of lower limbs in standing ( p = 0.0266) was diagnosed in the examined group after the end of the programme. After the end of the programme no significant difference between the group with intervention and the control group as for a change of balance of the examined patients was found. Conclusions: In the examined group in the chronic period after cs no significant improvement of stabilometrically evaluated balance was obtained, but improvement of the symmetry of load of lower limbs as well as improvement of dynamic balance were observed.

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Wpływ dawki terapeutycznej na skuteczność laseroterapii nisko- i wysokoenergetycznej (HILT)

Kwolek A., Zwolińska J., Weres A.

Acta Bio-Optica et Informatica Medica. Inżynieria Biomedyczna

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2011

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Vol. 17, nr 3

171-178

PL

Celem pracy jest porównanie skuteczności różnych form i metod laseroterapii na podstawie przeglądu literatury. Uwzględniono opublikowane w latach 2003-2011 prace badawcze skatalogowane w medycznych bazach danych Pub-Med, Embase, Cochrane oraz liczne pozycje piśmiennictwa anglojęzycznego i polskiego z przedmiotowej tematyki. Dane wskazują na szerokie możliwości zastosowania laseroterapii, zarówno jako samodzielnej metody, jak również metody skojarzonej. Zauważalna jest jednak niewielka liczba badań naukowych o wysokiej jakości metodologicznej, a tylko właściwie zaplanowane i rzetelnie realizowane badania naukowe mają istotne znaczenie dla podejmowania ważnych decyzji terapeutycznych w praktyce klinicznej.

EN

The main goal of this paper is to compare the effectiveness of various forms and applied methods of laser therapy, basing on the literature survey. This review is based on the papers published in years 2003-2011, presented in the medical databases PubMed, Embase, Cochrane and in English and Polish language literature. The various laser therapy applications as an independent method or as a combination therapy, are discussed. There are some scientific studies of high methodological quality, what is important, since only carefully planned and thoroughly executed scientific studies are helpful in therapeutic decisions in clinical practice.