Parcourir HE Louvain en Hainaut par auteur "c5a3da911f2b21d005f8236e88d31541c8a96012"
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Adiabatic Invariant of Center-of-Mass Motion during Walking as a Dynamical Stability Constraint on Stride Interval Variability and Predictability
09 septembre 2022, HE Louvain en HainautArticle scientifiqueHuman walking exhibits properties of both stability and variability. On the one hand, the variability of the interval of time between heel strikes is autocorrelated, i.e., not randomly organized. On the other hand, walking is highly stereotyped and arguments from general mechanics suggest that the stability of gait can be assessed according to invariant properties. This study aims at proposing ... -
Adiabatic invariants drive rhythmic human motion in variable gravity
01 décembre 2020, CeREF TechniqueArticle scientifiqueVoluntary human movements are stereotyped. When modeled in the framework of classical mechanics they are expected to minimize cost functions that may include energy, a natural candidate from a physiological point of view also. In time-changing environments, however, energy is no longer conserved—regardless of frictional energy dissipation—and it is therefore not the preferred candidate for any cost ... -
AsymptomaticGenu Recurvatumreshapes lower limb sagittaljoint and elevation angles during gait at different speeds
17 mars 2021, HE Louvain en HainautArticle scientifiqueBackground:Kinematic characteristics of walking with an asymptomatic genu recurvatum are currently unknown. The objective of this study is to characterize the lower limb sagittal joint and elevation angles during walking in participants with asymptomatic genu recurvatum and compare it with control participants without knee deformation at different speeds.Methods:The spatio-temporal parameters and ... -
Benefits of nonlinear analysis indices of walking stride interval in the evaluation of neurodegenerative diseases
12 décembre 2020, HE Louvain en HainautArticle scientifiqueIndices characterising the long-range temporal structure of walking stride interval (SI) variability such as Hurst exponent (H) and fractal dimension (D) may be used in addition to indices measuring the amount of variability like the coefficient of variation (CV). We assess the added value of the former indices in a clinical neurological context. Our aim is to demonstrate that they provide a clinical ... -
Capteur, ce movement est-il déconseillé ?
27 octobre 2021, CeREF TechniqueAutreComme tous les systèmes dynamiques, l’Homme est soumis aux lois de la mécanique. Il n’est toutefois pas réductible à une machine comme les autres : il est biologique, psychologique et social ! La douleur, définie comme une expérience sensorielle et émotionnelle désagréable associée à une lésion tissulaire réelle ou non, est une composante de nature complexe. Elle se manifeste notamment dans les ... -
Caractérisation cinématique de la marche de sujets présentant un genu recurvatum
2019, HE Louvain en HainautArticle scientifiqueLe but de cette étude est de réaliser une analyse de la cinématique du membre inférieur au cours de la marche chez des sujets présentant une déformation de type genu recurvatum afin de déterminer les caractéristiques de la marche de ces derniers. La cinématique du membre inférieur dans le plan sagittal durant la marche d’un groupe de 13 sujets présentant un genu recurvatum a révélé plusieurs différences ... -
Cinématique du grand battement et du développé chez des danseurs amateurs : effets à court terme d’un étirement statique ou dynamique
11 décembre 2020, HE Louvain en HainautArticle scientifiqueLes jeunes danseurs amateurs semblent utiliser majoritairement l’étirement statique. Or, la littérature montre également l’efficacité de l’étirement dynamique sur la performance des sportifs. L’un de ces étirements est-il dès lors plus favorable à l’exécution de deux mouvements de danse classique, le grand battement et développé ? Seize participants ont réalisé ces mouvements dans trois conditions ... -
Clinical and MRI changes of puborectalis and iliococcygeus after a short period of intensive pelvic floor muscles training with or without instrumentation
13 juin 2018, HE Louvain en HainautArticle scientifiquePurpose This study evaluates the impact of a 3-week period of intensive pelvic floor muscles training (PFMT), with or without instrumentation, on clinical and static magnetic resonance imaging (MRI) changes of puborectalis (PR) and iliococcygeus (IL) muscles. Methods 24 healthy young women were enrolled in the study and 17 achieved the 9 sessions of 30 min training exercises and conducted all ... -
Comparison of the movement behaviour of experienced and novice performers during the Cat exercise
22 décembre 2022, HE Louvain en HainautArticle scientifiquewo previous studies showed kinematic differences between novice and experienced performers during unchoreographed movements executed in standing position. However, no study explores if these kinematic differences holds during unchoreographed movements executed in quadrupedal position. The aim of this study is to compare the movement behaviour of experienced and novice performers during an exercise ... -
Compte rendu de : "Tim White, Michael Black, Pieter Folkens, Traité d’ostéologie humaine : anatomie, anthropologie, paléontologie"
2017, HE Louvain en HainautRapportCompte rendu de : "Tim White, Michael Black, Pieter Folkens, Traité d’osteologie humaine : anatomie, anthropologie, paléontologie ́/ traduction de Jean-Pol Beauthier, Philippe Lefevre ̀et Francois Beauthier – 1 vol de ̧ xxviii + 692 p. – (21 × 27,5) – broché – De Boeck supérieur – 2016 – 69,00 € – isbn 978-2-8073-0301-0" -
Des fractales à la marche... il n'y a qu'un pas !
Article scientifiqueOù trois enseignants-chercheurs devisent au sujet de la marche bipède chez l’humain et où la dynamique à long terme de ce phénomène est interprétée en termes de complexité et prévisibilité, deux concepts quantifiables grâce aux fractales et aux outils mathématiques permettant de les étudier. -
Diffusion in Phase Space as a Tool to Assess Variability of Vertical Centre-of-Mass Motion during Long-Range Walking
06 février 2023, CeREF SantéCeREF TechniqueArticle scientifiqueWhen a Hamiltonian system undergoes a stochastic, time-dependent anharmonic perturbation, the values of its adiabatic invariants as a function of time follow a distribution whose shape obeys a Fokker–Planck equation. The effective dynamics of the body’s centre-of-mass during human walking is expected to represent such a stochastically perturbed dynamical system. By studying, in phase space, the ... -
Digital natives and dual task: Handling it but not immune against cognitive-locomotor interferences
19 mai 2020, HE Louvain en HainautCERISICArticle scientifiqueDigital natives developed in an electronic dual tasking world. This paper addresses two questions. Do digital natives respond differently under a cognitive load realized during a locomotor task in a dual-tasking paradigm and how does this address the concept of safety? We investigate the interplay between cognitive (talking and solving Raven’s matrices) and locomotor (walking on a treadmill) tasks ... -
DYSKIMOT: An Ultra-Low-Cost Inertial Sensor to Assess Head’s Rotational Kinematics in Adults during the Didren-Laser Test
04 février 2020, CERISICArticle scientifiqueVarious noninvasive measurement devices can be used to assess cervical motion. The size, complexity, and cost of gold-standard systems make them not suited to clinical practice, and actually difficult to use outside a dedicated laboratory. Nowadays, ultra-low-cost inertial measurement units are available, but without any packaging or a user-friendly interface. The so-called DYSKIMOT is a home-designed, ... -
Ergonomic Risk Assessment of Developing Musculoskeletal Disorders in Workers with the Microsoft Kinect: TRACK TMS
19 octobre 2018, CeREF TechniqueArticle scientifiqueCompte rendu de la conférence JETSAN 2017 -
Existence of aesthetic-kinematic correlations in grand battement in young recreational dancers
27 mars 2021, HE Louvain en HainautAutreDiaporama de la présentation orale donnée au congrès Genees & Kunst 2021 , organisé par la Nederlandse Vereniging voor Dans- en Muziekgeneeskunde. -
Fine adaptive precision grip control without maximum pinch strength changes after upper limb neurodynamic mobilization
30 juin 2021, HE Louvain en HainautArticle scientifiqueBefore and immediately after passive upper limb neurodynamic mobilizations targeting the median nerve, grip ( GF ) and load ( LF ) forces applied by the thumb, index and major fingers (three-jaw chuck pinch) were collected using a manipulandum during three different grip precision tasks: grip-lifthold- replace (GLHR), vertical oscillations (OSC), and vertical oscillations with up and down ... -
Fractal analyses reveal independent complexity and predictability of gait
28 novembre 2017, HE Louvain en HainautLivre/Ouvrage ou monographieLocomotion is a natural task that has been assessed for decades and used as a proxy to highlight impairments of various origins. So far, most studies adopted classical linear analy- ses of spatio-temporal gait parameters. Here, we use more advanced, yet not less practical, non-linear techniques to analyse gait time series of healthy subjects. We aimed at finding more sensitive indexes related to ... -
Head Pitch Angular Velocity Discriminates (Sub-)Acute Neck Pain Patients and Controls Assessed with the DidRen Laser Test
06 avril 2022, CeREF TechniqueArticle scientifiqueUnderstanding neck pain is an important societal issue. Kinematic data from sensors may help to gain insight into the pathophysiological mechanisms associated with neck pain through a quantitative sensorimotor assessment of one patient. The objective of this study was to evaluate the potential usefulness of artificial intelligence with several machine learning (ML) algorithms in assessing neck ... -
Head-neck rotational movements using DidRen laser test indicate children and seniors’ lower performance
25 juillet 2019, HE Louvain en HainautArticle scientifiqueSensorimotor control strategies during cervical axial rotation movements have been previously explored in narrow age ranges but never concurrently in Children and Seniors during a well-standardized task. However, the lifespan developmental approach provides a framework for research in human sensorimotor control of the head-neck complex. A cross-sectional design was used to investigate the influence ...
