Why do older adults stand-up differently to young adults?: investigation of compensatory movement strategies in sit-to-walk.
Functional motor redundancy enables humans to move with distinct muscle activation patterns while achieving a similar outcome. Since humans select similar strategies, there seems to be an optimal control. However, older adults move differently to young adults. The question is whether this is this du...
| Publicado en: | NPJ Aging Vol. 8; no. 1; pp. 1 - 20 |
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| Autores principales: | , , , , , |
| Formato: | pictorial research tables/charts Journal Article |
| Publicado: |
Springer Nature
9/5/2022
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| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ccm&AN=159740226&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 159740226 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 27316068 N5IE jtl: NPJ Aging issn: 27316068 maglogo: N pubinfo: dt: 9/5/2022 vid: 8 iid: 1 pid: 237 pub: Springer Nature place: New York, New York artinfo: ui: 159740226 159740226 159740226 10.1038/s41514-022-00094-x 159740226 ppf: 1 ppct: 19 formats: tig: atl: Why do older adults stand-up differently to young adults?: investigation of compensatory movement strategies in sit-to-walk. aug: au: van der Kruk, Eline Strutton, Paul Koizia, Louis J. Fertleman, Michael Reilly, Peter Bull, Anthony M. J. affil: Biomechatronics & Human-Machine control, Department of Biomechanical Engineering, Faculty of Mechanical Engineering (3me), Delft University of Technology, Delft, the Netherlands sug: subj: Standing Evaluation Standing Evaluation Movement Evaluation Sitting Evaluation Walking Evaluation Age Factors Neuromuscular Control Activities of Daily Living Task Performance and Analysis Human Funding Source Young Adult Adult Aged Aged, 80 and Over Muscle Strength Evaluation Neural Conduction Evaluation Fear Accidental Falls Risk Factors Kinematics Evaluation Muscle Contraction Evaluation Kinetics Arm Physiology Ankle Joint Physiology Range of Motion Evaluation Coping Uncertainty Muscle Weakness Balance, Postural Evaluation Reflex Evaluation Life Style Frailty Syndrome Foot Physiology Sex Factors Male Female Hip Physiology Thigh Physiology Acceleration Electromyography England Clinical Assessment Tools Flexion Evaluation Extension Evaluation Torso Physiology Lumbar Vertebrae Physiology Grip Strength Evaluation Proprioception Evaluation Dynamometry Questionnaires Visual Analog Scaling Pain Measurement Comparative Studies Descriptive Statistics One-Way Analysis of Variance Adult: 19-44 years Aged: 65+ years Aged, 80 & over Male Female ab: Functional motor redundancy enables humans to move with distinct muscle activation patterns while achieving a similar outcome. Since humans select similar strategies, there seems to be an optimal control. However, older adults move differently to young adults. The question is whether this is this due to an altered reinforcement scheme, altered sensory inputs, or due to alterations in the neuromusculoskeletal systems, so that it is no longer optimal or possible to execute the same movement strategies. The aim of this study was to analyse natural compensation strategies in the vital daily-life-task, sit-to-walk, in relation to neuromuscular capacity and movement objectives in younger (27.2 ± 4.6 years, N = 27, 14♀) and elderly (75.9 ± 6.3 years, N = 23, 12♀) adults. Aspects of the neuromuscular system that are prone to age-related decline and feasible to quantify were assessed (i.e. strength, nerve conductivity, fear of falling). Kinematics and muscle activity were recorded and joint kinetics were estimated using biomechanical models. Elderly men consistently used their arms when standing up. This strategy was not associated with a lack of or a reduction in strength, but with a reduction, but no lack of, ankle joint range of motion, and with increased fear of falling. The results show that humans preferentially maintain a minimum threshold of neuromuscular reserve to cope with uncertainties which results in compensation prior to coming up against physical limitations. Smaller base of support while standing up, a compensatory strategy with possibly greater risk of falls, was associated with muscular weakness, and longer nerve conduction latencies. pubtype: Academic Journal doctype: pictorial research tables/charts Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
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