Search results for "Whole body pointing"

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Shifts in Key Time Points and Strategies for a Multisegment Motor Task in Healthy Aging Subjects

2018

International audience; In this study, we compared key temporal points in the whole body pointing movement of healthy aging and young subjects. During this movement, subject leans forward from a standing position to reach a target. As it involves forward inclination of the trunk, the movement creates a risk for falling. We examined two strategic time points during the task-first, the crossover point where the velocity of the center of mass (CoM) in the vertical dimension outstripped the velocity in the anteroposterior dimension and secondly, the time to peak of the CoM velocity profile. Transitions to stabilizing postures occur at these time points. They both occurred earlier in aging subje…

MaleAgingmedicine.medical_specialtyEquilibriumMovementCrossoverWhole body pointingCenter of massKey (music)Cohort Studies03 medical and health sciences0302 clinical medicinePhysical medicine and rehabilitationReference ValuesTask Performance and AnalysisHumansMedicine[SDV.NEU] Life Sciences [q-bio]/Neurons and Cognition [q-bio.NC]Prospective StudiesHealthy agingPostural BalancepostureAged[SDV.MHEP.GEG] Life Sciences [q-bio]/Human health and pathology/Geriatry and gerontologybusiness.industryMovement (music)[SDV.MHEP.GEG]Life Sciences [q-bio]/Human health and pathology/Geriatry and gerontologyWork (physics)trunk structure030229 sport sciencesTrunkHealthy VolunteersBiomechanical PhenomenaOptimal controlvertical dimensionhealthy agingMotor SkillsDuration (music)Female[SDV.NEU]Life Sciences [q-bio]/Neurons and Cognition [q-bio.NC]Geriatrics and GerontologybusinessFalling (sensation)Psychomotor Performance030217 neurology & neurosurgeryThe Journals of Gerontology: Series A
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Changements de stratégie temporelle durant des tâches motrices complexes chez des sujets âgés sains

2017

International audience; Cette étude a permis d’analyser des points temporels clefs de la réalisation de mouvements impliquant l’ensemble du corps (Whole Body Reaching movements - WBR). Lors de ce mouvement, le sujet déplace son Centre de Masse (CdM) vers l’avant pour l’atteindre une cible. Ceci implique une inclinaison du tronc créant des modifications posturales et un risque de chute. Ces différentes considérations nous ont poussées à étudier une population de sujets âgés (SA) en comparaison à des sujets jeunes (SJ). Nous avons analysé des points stratégiques au cours de la tâche, dont deux plus particulièrement. La décomposition axiale de la vitesse du CdM en deux composantes (Verticale-V…

Centre de masseEquilibrium[ SDV.NEU ] Life Sciences [q-bio]/Neurons and Cognition [q-bio.NC]Contrôle optimalWhole body pointingMouvement de pointage de tout le corps[SDV.NEU] Life Sciences [q-bio]/Neurons and Cognition [q-bio.NC]EquilibreCenter of massOptimal control
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