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  1. Article ; Online: Gait disorder classification based on effective feature selection and unsupervised methodology.

    Shayestegan, Mohsen / Kohout, Jan / Trnková, Kateřina / Chovanec, Martin / Mareš, Jan

    Computers in biology and medicine

    2024  Volume 170, Page(s) 108077

    Abstract: In gait stability analysis, patients suffering from dysfunction problems are impacted by shifts in their dynamic balance. Monitoring the patients' progress is important for allowing physicians and patients to observe the rehabilitation process accurately. ...

    Abstract In gait stability analysis, patients suffering from dysfunction problems are impacted by shifts in their dynamic balance. Monitoring the patients' progress is important for allowing physicians and patients to observe the rehabilitation process accurately. In this study, we designed a new methodology for classifying gait disorders to quantify patients' progress. The dataset in this study includes 84 measurements of 37 patients based on a physician's opinion. In this study, the system, which includes a Kinect camera to observe and store the frames of patients walking down a hallway, a key-point detector to detect the skeletal key points, and an encoder transformer classifier network integrated with generator-discriminator networks (ET-GD), is designed to evaluate the classification of gait dysfunction. The detector extracts the skeletal key points of patients. After feature engineering, the selected high-level features are fed into the proposed neural network to analyse patient movement and perform the final evaluation of gait dysfunction. The proposed network is inspired by the 1D encoder transformer, which is integrated with two main networks: a network for classification and a network to generate fake output data similar to the input data. Furthermore, we used a discriminator structure to distinguish between the actual data (input) and fake data (generated data). Due to the multi-structural networks in the proposed method, multi-loss functions need to be optimised; this increases the accuracy of the encoder transformer classifier.
    MeSH term(s) Humans ; Gait ; Walking ; Movement Disorders ; Neural Networks, Computer ; Gait Analysis
    Language English
    Publishing date 2024-01-30
    Publishing country United States
    Document type Journal Article
    ZDB-ID 127557-4
    ISSN 1879-0534 ; 0010-4825
    ISSN (online) 1879-0534
    ISSN 0010-4825
    DOI 10.1016/j.compbiomed.2024.108077
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  2. Article ; Online: Rural schools

    Trnková Kateřina

    European Countryside, Vol 1, Iss 2, Pp 105-

    wrinklers for mayors?

    2009  Volume 112

    Keywords rural primary school ; small school with composite classes ; rural municipality ; mayors ; founders of the primary schools ; reasons for establishing rural schools ; costs and benefits of the running small rural primary school ; venkovské základní školy ; malotřídní školy ; venkovské obce ; starostové ; zřizovatelé základních škol ; důvody pro zřízení venkovských škol ; náklady a přínosy provozování malých venkovských základních škol ; Agriculture ; S ; Social Sciences ; H
    Language English
    Publishing date 2009-01-01T00:00:00Z
    Publisher Sciendo
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  3. Article: Head-shaking-induced nystagmus reflects dynamic vestibular compensation: A 2-year follow-up study.

    Striteska, Maja / Valis, Martin / Chrobok, Viktor / Profant, Oliver / Califano, Luigi / Syba, Jaroslav / Trnkova, Katerina / Kremlacek, Jan / Chovanec, Martin

    Frontiers in neurology

    2022  Volume 13, Page(s) 949696

    Abstract: Purpose: We aimed to assess the ability of a head-shaking test (HST) to reflect vestibular compensation in patients after unilateral peripheral vestibular loss and to provide missing evidence and new insights into the features of head-shaking-induced ... ...

    Abstract Purpose: We aimed to assess the ability of a head-shaking test (HST) to reflect vestibular compensation in patients after unilateral peripheral vestibular loss and to provide missing evidence and new insights into the features of head-shaking-induced nystagmus (HSN) over a 2-year follow-up.
    Background: HSN may occur after a prolonged sinusoidal oscillation of the head. HSN is frequently observed in subjects with vestibular function asymmetry; it usually beats toward the functionally intact or "stronger" ear and can be followed by a reversal of its direction.
    Study design: A prospective observational case-control study.
    Settings: A tertiary academic referral center.
    Methods: A total of 38 patients after acute unilateral vestibular loss (22 patients with vestibular neuronitis and 16 patients after vestibular neurectomy) and 28 healthy controls were followed for four consecutive visits over a 2-year period. A complex vestibular assessment was performed on all participants, which included spontaneous nystagmus (SPN), the caloric test, the head-shaking test (HST), the video head impulse test (vHIT), the Timed Up and Go (TUG) test, and the Dizziness Handicap Inventory (DHI) questionnaire. We established the criteria for the poorly compensated group to assess different compensatory behaviors and results.
    Results: We found a time-related decrease in HSN (ρ < -0.84,
    Conclusions: Our study showed that, after a unilateral peripheral vestibular loss, the intensity of HSN decreased exponentially over time, reflecting an improvement in dynamic ability and self-perceived deficit. HSN tended to decline to the value of the control group once vestibular compensation was satisfactory and sufficient for a patient's everyday life. In contrast, well-detectable HSN in poorly compensated patients with insufficient clinical recovery confirmed the potential of HSN to reflect and distinguish between adequate and insufficient dynamic compensation. HSN could serve as an objective indicator of stable unilateral vestibular loss.
    Language English
    Publishing date 2022-09-20
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2564214-5
    ISSN 1664-2295
    ISSN 1664-2295
    DOI 10.3389/fneur.2022.949696
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  4. Article: Rural schools: wrinklers for mayors?

    Trnková, Kateřina

    European countryside. 2009 May 18, v. 1, no. 2

    2009  

    Abstract: All municipalities in the Czech Republic are obliged to guarantee access to basic education for children eligible for compulsory schooling. To meet this task, most municipalities establish a primary school whose operational and investment costs they ... ...

    Abstract All municipalities in the Czech Republic are obliged to guarantee access to basic education for children eligible for compulsory schooling. To meet this task, most municipalities establish a primary school whose operational and investment costs they cover. Running a school can be very demanding for rural municipalities. The article presents the results of a questionnaire survey which involved founders (mayors) the so-called small schools with composite classes, situated mainly in small rural municipalities. Based on these results examines the main stereotypes associated with the notion of small rural schools. A hypothetical balance between what the municipality must invest and what benefits the school brings is sought.
    Keywords children ; elementary schools ; questionnaires ; rural areas ; small schools ; stereotyped behavior ; surveys ; Czech Republic
    Language English
    Dates of publication 2009-0518
    Size p. 105-112.
    Publishing place Versita
    Document type Article
    ZDB-ID 2501169-8
    ISSN 1803-8417
    ISSN 1803-8417
    DOI 10.2478/v10091-009-0009-1
    Database NAL-Catalogue (AGRICOLA)

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  5. Article ; Online: Estimated Vestibulogram (EVEST) for Effective Vestibular Assessment.

    Striteska, Maja / Skoloudik, Lukas / Valis, Martin / Mejzlik, Jan / Trnkova, Katerina / Chovanec, Martin / Profant, Oliver / Chrobok, Viktor / Kremlacek, Jan

    BioMed research international

    2021  Volume 2021, Page(s) 8845943

    Abstract: Background: The availability and development of methods testing the vestibuloocular reflex (VOR) brought a broader view into the lateral semicircular canal (L-SCC) function. However, the higher number of evaluated parameters makes more difficult the ... ...

    Abstract Background: The availability and development of methods testing the vestibuloocular reflex (VOR) brought a broader view into the lateral semicircular canal (L-SCC) function. However, the higher number of evaluated parameters makes more difficult the specialist's diagnose-making process.
    Purpose: To provide medical specialists, a new diagnostic-graphic tool, Estimated Vestibulogram- EVEST, enabling a quick and easy-to-read visualization and comparison of the VOR test results within the L-SCC.
    Methods: The development of EVEST involved 148 participants, including 49 healthy volunteers (28 female and 21 male) and 99 (58 female and 41 male) patients affected by different degrees of peripheral vestibular deficit. The corresponding L-SCC VOR test results, from patients meeting the diagnostic criteria, were used to create the EVEST.
    Results: Based on the test results, we depicted and calculated the EVEST vestibular function asymmetry (VFA) in all the groups. To assess a feasibility of EVEST to describe a vestibular function deficit, we calculated sensitivity and specificity of VFA using a receiver operating characteristic curve (ROC) and compared it to single tests. In all the tests, we determined the cutoff value as the point with the highest sensitivity and specificity. For discrimination of any vestibular deficit, the VFA with cutoff 6.5% was more sensitive (91%) and specific (98%) than single tests. Results showed that EVEST is a beneficial graphic tool for quick multifrequency comparison and diagnosis of different types of the peripheral vestibular loss.
    Conclusions: EVEST can help to easily evaluate various types of peripheral vestibular lesion.
    MeSH term(s) Adult ; Aged ; Female ; Humans ; Male ; Middle Aged ; Reflex, Vestibulo-Ocular ; Vestibular Diseases/diagnosis ; Vestibular Diseases/physiopathology ; Vestibular Function Tests
    Language English
    Publishing date 2021-03-02
    Publishing country United States
    Document type Journal Article
    ZDB-ID 2698540-8
    ISSN 2314-6141 ; 2314-6133
    ISSN (online) 2314-6141
    ISSN 2314-6133
    DOI 10.1155/2021/8845943
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  6. Article ; Online: Advanced Statistical Analysis of 3D Kinect Data: Mimetic Muscle Rehabilitation Following Head and Neck Surgeries Causing Facial Paresis.

    Kohout, Jan / Verešpejová, Ludmila / Kříž, Pavel / Červená, Lenka / Štícha, Karel / Crha, Jan / Trnková, Kateřina / Chovanec, Martin / Mareš, Jan

    Sensors (Basel, Switzerland)

    2020  Volume 21, Issue 1

    Abstract: An advanced statistical analysis of patients' faces after specific surgical procedures that temporarily negatively affect the patient's mimetic muscles is presented. For effective planning of rehabilitation, which typically lasts several months, it is ... ...

    Abstract An advanced statistical analysis of patients' faces after specific surgical procedures that temporarily negatively affect the patient's mimetic muscles is presented. For effective planning of rehabilitation, which typically lasts several months, it is crucial to correctly evaluate the improvement of the mimetic muscle function. The current way of describing the development of rehabilitation depends on the subjective opinion and expertise of the clinician and is not very precise concerning when the most common classification (House-Brackmann scale) is used. Our system is based on a stereovision Kinect camera and an advanced mathematical approach that objectively quantifies the mimetic muscle function independently of the clinician's opinion. To effectively deal with the complexity of the 3D camera input data and uncertainty of the evaluation process, we designed a three-stage data-analytic procedure combining the calculation of indicators determined by clinicians with advanced statistical methods including functional data analysis and ordinal (multiple) logistic regression. We worked with a dataset of 93 distinct patients and 122 sets of measurements. In comparison to the classification with the House-Brackmann scale the developed system is able to automatically monitor reinnervation of mimetic muscles giving us opportunity to discriminate even small improvements during the course of rehabilitation.
    MeSH term(s) Facial Muscles ; Facial Nerve ; Facial Paralysis ; Female ; Humans ; Kinetics ; Male ; Multivariate Analysis ; Rehabilitation
    Language English
    Publishing date 2020-12-26
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2052857-7
    ISSN 1424-8220 ; 1424-8220
    ISSN (online) 1424-8220
    ISSN 1424-8220
    DOI 10.3390/s21010103
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  7. Article: A Continuous Glucose Monitoring System (CGMS) - a promising approach for improving metabolic control in persons with type 1 Diabetes mellitus treated by insulin pumps.

    Mlcák, Petr / Fialová, Jana / Trnková, Katerina / Chlup, Rudolf

    Biomedical papers of the Medical Faculty of the University Palacky, Olomouc, Czechoslovakia

    2004  Volume 148, Issue 1, Page(s) 33–38

    Abstract: This pilot study deals with the possibilities of a Continuous Glucose Monitoring System (CGMS, Minimed- Medtronic) to optimize insulin substitution. Ten persons with type 1 diabetes mellitus treated by means of an insulin pump entered the study and eight ...

    Abstract This pilot study deals with the possibilities of a Continuous Glucose Monitoring System (CGMS, Minimed- Medtronic) to optimize insulin substitution. Ten persons with type 1 diabetes mellitus treated by means of an insulin pump entered the study and eight of them completed the protocol. CGMS was introduced for a period of 5 days. The standard dinner (60 g of carbohydrates) and overnight fasting were designed to ensure standard night conditions in all persons in the study while maintaining their usual daily eating routine, physical exercise and assessment of prandial insulin boluses. The only adaptation of basal rates of insulin pump was performed on day 3. Comparison of the mean plasma glucose concentration (0:00-24:00 hrs) between day 2 (before adaptation) and day 4 (following adaptation) was made. An independent comparison of the mean plasma glucose concentration between the night from day 2 till day 3 (22:00-6:00 hrs) and the night from day 4 till day 5 (22:00-6:00 hrs) was performed. The mean plasma glucose investigated by means of CGMS improved in the 24-hour period in 5 out of 8 persons and in the night fasting period (22:00 to 6 hrs) in 6 out of 8 persons. The CGMS is a useful means for assessment of the effectiveness of basal rate and prandial insulin doses in persons with type 1 diabetes treated by means of an insulin pump. However, further studies are necessary to improve the algorithm for insulin substitution.
    MeSH term(s) Adult ; Blood Glucose/analysis ; Diabetes Mellitus, Type 1/blood ; Diabetes Mellitus, Type 1/drug therapy ; Female ; Humans ; Hypoglycemic Agents/administration & dosage ; Insulin/administration & dosage ; Insulin Infusion Systems ; Male ; Middle Aged ; Monitoring, Ambulatory
    Chemical Substances Blood Glucose ; Hypoglycemic Agents ; Insulin
    Language English
    Publishing date 2004-07
    Publishing country Czech Republic
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 17196-7
    ISSN 1804-7521 ; 1213-8118 ; 0231-5599 ; 0862-481X
    ISSN (online) 1804-7521
    ISSN 1213-8118 ; 0231-5599 ; 0862-481X
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    In stock of ZB MED Cologne/Königswinter

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