Search results for "GAIT"
showing 10 items of 316 documents
Added Value and Clinical Significance of Nonlinear Variability Indices of Walking Stride Interval in Neurodegenerative Diseases
2020
AbstractThough self-paced walking is highly stereotyped, the stride interval fluctuates from one stride to the next around an average value with a measurable statistical variability. In clinical gait analysis, this variability is usually assessed with indices such the standard deviation or the coefficient of variation (CV). The aim of this study is to understand the added value that nonlinear indices of walking stride interval variability, such as Hurst exponent (H) and Minkowski fractal dimension (D), can provide in a clinical context and to suggest a clinical significance of these indices in the most common neurodegenerative diseases: Parkinson, Huntington, and amyotrophic lateral scleros…
Frailty Tools for Assessment of Long-term Prognosis After Acute Coronary Syndrome
2020
Objective: To evaluate the 5 components of the Fried frailty phenotype (self-reported unintentional weight loss, physical activity questionnaire, gait speed, grip strength, and self-reported exhaustion) for long-term outcomes in elderly survivors of acute coronary syndrome. Methods: A total of 342 consecutive patients (from October 1, 2010, to February 1, 2012) were included. The 5 components of the Fried score and albumin concentration, as malnutrition index, were assessed before hospital discharge. Patients were followed up until April 2020 (median follow-up, 8.7 years). The end point was postdischarge all-cause mortality. Results: Mean ± SD age was 77±7 years and mean ± SD Fried score wa…
A public dataset of overground walking kinetics in healthy individuals
2018
The dataset comprises raw kinetic data (both in .mat and .txt) of 128 healthy subjects (52 female, 76 male; M age: 23.8 years, SD 9.1; M body height: 1.76 m, SD 0.08; M body mass: 71.3 kg, SD 13.0; M body mass index: 22.9 kg/m², SD 2.8; M gait speed: 1.33 m/s, SD 0.13) during overground walking. All subjects met the inclusion criteria, which meant that during the study, they were free of lower extremity pain or injuries. In addition, before and during the study, they were free of any gait pathology. The .mat-file 'gait_grf_subject.mat' includes six 128x1 double variables containing one row value for each of the 128 subjects: subject_id [number] subject_gender [1 = "female" ; 0 ="male"] subj…
Una gramática escolar interlingüística. Hacia una enseñanza reflexiva de las lenguas en contextos multilingües
2022
El reto de la educación plurilingüe requiere una enseñanza de las lenguas curriculares que promueva la reflexión sobre el uso y la transferencia lingüística para desarrollar la competencia comunicativa del alumnado. En este sentido, el proyecto Egramint se plantea la elaboración de una gramática escolar interlingüística como instrumento de formación docente y de intervención en el aula. Metodológica-mente, es una investigación de carácter cualitativo-etnográfico en tres fases. En la primera, sobre la que versa este artículo, abordamos el análisis documental de los currículos oficiales del ámbito español para delimitar cómo se configura en ellos la gramática escolar. Los resultados muestran …
Zvaigžņotā Debess: 2017, Vasara (236)
2017
Contents: In MEMORIAM of ANDREJS ALKSNIS: Curriculum Vitae of Andrejs Alksnis (1928-2017) ; Condolences and Parting Words ; List of Publications by Professor Andrejs Alksnis ; “ZVAIGŽŅOTĀ DEBESS” FORTY YEARS AGO: J.Francmanis. Enigma of Saturn’s Rings Brightness (abridged) ; E.Mūkins. Crater on Mercury Named After Rainis (abridged) ; Ā.Alksne. The Starry Sky in the Summer of 1977 (abridged) ; DEVELOPMENTS in SCIENCE: K.Schwartz. Early Universe Through the Eyes of Telescopes ; DISCOVERIES: K.Schwartz. Dwarf Galaxy Henize 2-10 with a Massive Black Hole ; J.Kuzmanis. Hot Topic – FRB 121102 ; SPACE RESEARCH and EXPLORATION: J.Kalvāns. Are Earth's Oceans of Interstellar Origin? ; J.Jaunbergs. ‘D…
Gait Analysis Using Multiple Kinect Sensors
2014
A gait analysis technique to model user presences in an office scenario is presented in this chapter. In contrast with other approaches, we use unobtrusive sensors, i.e., an array of Kinect devices, to detect some features of interest. In particular, the position and the spatio-temporal evolution of some skeletal joints are used to define a set of gait features, which can be either static (e.g., person height) or dynamic (e.g., gait cycle duration). Data captured by multiple Kinects is merged to detect dynamic features in a longer walk sequence. The approach proposed here was been evaluated by using three classifiers (SVM, KNN, Naive Bayes) on different feature subsets.
Cross-Talk Correction Method for Knee Kinematics in Gait Analysis Using Principal Component Analysis (PCA): A New Proposal
2014
International audience; Background: In 3D gait analysis, the knee joint is usually described by the Eulerian way. It consists in breaking down the motion between the articulating bones of the knee into three rotations around three axes: flexion/extension, abduction/adduction and internal/external rotation. However, the definition of these axes is prone to error, such as the "cross-talk'' effect, due to difficult positioning of anatomical landmarks. This paper proposes a correction method, principal component analysis (PCA), based on an objective kinematic criterion for standardization, in order to improve knee joint kinematic analysis. Methods: The method was applied to the 3D gait data of …
LPS injection reprograms the expression and the 3′ UTR of a CAP gene by alternative polyadenylation and the formation of a GAIT element in Ciona inte…
2016
The diversification of cellular functions is one of the major characteristics of multicellular organisms which allow cells to modulate their gene expression, leading to the formation of transcripts and proteins with different functions and concentrations in response to different stimuli. CAP genes represent a widespread family of proteins belonging to the cysteine-rich secretory protein, antigen 5 and pathogenesis-related 1 superfamily which, it has been proposed, play key roles in the infection process and the modulation of immune responses in host animals. The ascidian Ciona intestinalis represents a group of proto-chordates with an exclusively innate immune system that has been widely st…
A linear regression-based machine learning pipeline for the discovery of clinically relevant correlates of gait speed reserve from multiple physiolog…
2021
Frailty in older adults is characterized by reduced physiological reserve. Gait speed reserve (GSR: maximum minus usual gait speed) could help identify frailty and act as a proxy for physiological reserve. Utilizing data from 2397 participants aged 50+ from wave 3 of The Irish Longitudinal Study on Ageing, we developed a stepwise linear regression-based machine learning pipeline to select the most important GSR predictors from 34 manually selected features across multiple domains. Variables were selected one at a time such that they maximized the mean adjusted r-squared score from a 5-fold cross-validation. A peak score of (0.16 +/- 0.03) was achieved with 14 variables (giving adjusted-r-sq…
Sarcopenia and fall-related injury among older adults in five low- and middle-income countries
2021
Sarcopenia is a common condition in older people and increasing evidence suggests that it can be considered as a potential risk factor for falls and fractures. However, no studies on this topic from low- and middle-income countries (LMICs) are available. Thus, we assessed this association among older adults from five LMICs (China, India, Ghana, Mexico, and Russia). Community-based, nationally representative, cross-sectional data of the Study on Global Aging and Adult Health were analyzed. Sarcopenia was defined as the presence of low skeletal muscle mass based on indirect population formula, and either slow gait or low handgrip strength. The presence of fall-related injury was ascertained t…