1,721,056 research outputs found
Multichannel SEMG in clinical gait analysis: a review and state-of-the-art.
No full textBackground: Application of surface electromyography (SEMG) to the clinical evaluation of neuromuscular disorders can provide relevant “diagnostic” contributions in terms of nosological classification, localization of focal impairments, detection of pathophysiological mechanisms, and functional assessment.
Methods: The present review article elaborates on: (i) the technical aspects of the myoelectric signals acquisition within a protocol of clinical gait analysis (multichannel recording, surface vs. deep probes, electrode placing, encumbrance effects), (ii) the sequence of procedures for the subsequent data processing (filtering, averaging, normalization, repeatability control), and (iii) a set of feasible strategies for the final extraction of clinically useful information.
Findings: Relevant examples of SEMG application to functional diagnosis are provided.
Interpretation: Emphasis is given to the key role of SEMG along with kinematic and kinetic analysis, for non-invasive assessment of relevant pathophysiological mechanisms potentially hindering the gait function, such as changes in passive muscle–tendon properties (peripheral non-neural component), paresis, spasticity, and loss of selectivity of motor output in functionally antagonist muscles
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
sj-tif-4-pch-10.1177_21501351221095424 - Supplemental material for Surgery for Anomalous Aortic Origin of a Coronary Artery (AAOCA) in Children and Adolescents: A Meta-Analysis
No full textSupplemental material, sj-tif-4-pch-10.1177_21501351221095424 for Surgery for Anomalous Aortic Origin of a Coronary Artery (AAOCA) in Children and Adolescents: A Meta-Analysis by Matteo Ponzoni, Anna C. Frigo and Massimo A. Padalino in World Journal for Pediatric and Congenital Heart Surgery</p
sj-docx-1-pch-10.1177_21501351221095424 - Supplemental material for Surgery for Anomalous Aortic Origin of a Coronary Artery (AAOCA) in Children and Adolescents: A Meta-Analysis
No full textSupplemental material, sj-docx-1-pch-10.1177_21501351221095424 for Surgery for Anomalous Aortic Origin of a Coronary Artery (AAOCA) in Children and Adolescents: A Meta-Analysis by Matteo Ponzoni, Anna C. Frigo and Massimo A. Padalino in World Journal for Pediatric and Congenital Heart Surgery</p
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
sj-tif-3-pch-10.1177_21501351221095424 - Supplemental material for Surgery for Anomalous Aortic Origin of a Coronary Artery (AAOCA) in Children and Adolescents: A Meta-Analysis
No full textSupplemental material, sj-tif-3-pch-10.1177_21501351221095424 for Surgery for Anomalous Aortic Origin of a Coronary Artery (AAOCA) in Children and Adolescents: A Meta-Analysis by Matteo Ponzoni, Anna C. Frigo and Massimo A. Padalino in World Journal for Pediatric and Congenital Heart Surgery</p
Appropriate Similarity Measures for Author Cocitation Analysis
Full text linkWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
The upper body segmental movements during walking by young females.
No full textTo characterise the physiological pattern of trunk and shoulders movements during walking and provide a reference for further studies on spine deformities.Implementation of a model for measuring spine and shoulder girdle movements during gait. Data collection on a population of eighteen, young, healthy, female subjects.The analysis of gait modifications in subjects with idiopathic scoliosis could offer an insight to better understand the functional relationship with the pathology.Retroreflective markers were positioned on the main spine processes and acromions to be detected by a TV-based motion analysis system. A model of kinematic computation was implemented and integrated in a previously developed protocol for multifactorial gait analysis. Movements in the main reference planes and in relation to pelvis were analysed.The trunk was on average bent forward by 3.4 degrees with respect to standing; of the two physiological curves in the sagittal plane only lordosis changed during walking; in the frontal plane, a dynamic spine deformation appeared, that was maximum at heel strike-early stance; the trunk was bent controlaterally of the foot on the ground, while the shoulders remained stable; in the horizontal plane, the shoulders rotated contralaterally to the pelvis.In our population all the segmental movements analysed were smaller than 5 degrees during gait, except the angle of proximal curvature in the frontal plane, shoulder rotation, and angle between shoulders and pelvis; all the measured angles were far below their possible ranges of motion.Quantitative data on upper body kinematics as a complement to gait analysis can help understanding movement disorders and compensation strategies in several pathologies
Control data collection for the analysis of staircase climbing in patients affected by orthopaedic diseases
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