Gait initiation in older adults with postural instability

Hass, Chris J.; Waddell, Dwight E.; Wolf, Steven L.; Juncos, Jorge L.; Gregor, Robert J.

doi:10.1016/j.clinbiomech.2008.02.012

Cited by 101 publications

(96 citation statements)

References 42 publications

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“…During GI, patients with PD demonstrate reduced propulsive force generation, increased step length variability, and diminished anticipatory postural adjustments (APA) [1][2][3]. Collectively, these impairments compromise the necessary momentum production required for efficient and safe GI.…”

Section: Introductionmentioning

confidence: 99%

“…Individuals with Parkinson disease (PD) demonstrate motor impairments during performance of many daily functional tasks, including gait initiation (GI) [1][2]. During GI, patients with PD demonstrate reduced propulsive force generation, increased step length variability, and diminished anticipatory postural adjustments (APA) [1][2][3].…”

Section: Introductionmentioning

confidence: 99%

“…The APA serve to accelerate the body's center of mass forward and laterally toward the stance foot by moving the center of pressure posterior and toward the stepping leg [1][2]10]. Measurement of the displacement of the center of pressure during the APA of GI is a common measure of postural stability, providing insight into the generation of forward momentum needed for locomotion [1][2]. Importantly, we have previously shown that the outcomes of the APA during GI are vulnerable to changes that occur in the system with advanced age and disability [1][2].…”

Section: Introductionmentioning

confidence: 99%

“…Measurement of the displacement of the center of pressure during the APA of GI is a common measure of postural stability, providing insight into the generation of forward momentum needed for locomotion [1][2]. Importantly, we have previously shown that the outcomes of the APA during GI are vulnerable to changes that occur in the system with advanced age and disability [1][2]. Because the APA of GI are thought to be initiated via juxtapositional lobule cortex (formally the supplementary motor area) [11], it is possible that dual tasking during GI will differentially affect motor/cognitive performance because both the motor and cognitive tasks in this paradigm will rely on higher cortical function.…”

Section: Introductionmentioning

confidence: 99%

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Effects of cognitive task on gait initiation in Parkinson disease: Evidence of motor prioritization?

Nocera¹,

Roemmich²,

Elrod³

et al. 2013

JRRD

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Abstract-While much is known about the effects of dual tasking on cyclical and continuous motor performance (e.g., locomotion), there is a paucity of information on the effect of dual tasking on the initiation of movement. Therefore, the purpose of this study was to investigate the effect of a concurrent cognitive task on gait initiation in three groups: patients with Parkinson disease, healthy older adults, and healthy young adults. We examined the anticipatory postural adjustment displacements and velocities during single-task gait initiation as well as two dual-task conditions: (1) 0-back + gait initiation and (2) 2-back + gait initiation. The Parkinson disease group exhibited less anticipatory postural adjustment displacement and velocity than their aged-matched healthy peers and young adults during the single-and dual-task gait initiation settings (p < 0.05). Of interest was the finding of no additional effect on anticipatory postural adjustment displacement or velocity of gait initiation during the dual-task conditions in any group, including the Parkinson disease group. More traditionally studied gait/balance dual-task paradigms have demonstrated both motor and cognitive decline. Therefore, our results may suggest a prioritization of more "intentional" movement task (e.g., gait initiation) while dual tasking in Parkinson disease.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Effects of cognitive task on gait initiation in Parkinson disease: Evidence of motor prioritization?

Nocera¹,

Roemmich²,

Elrod³

et al. 2013

JRRD

Self Cite

View full text Add to dashboard Cite

show abstract

“…It exist a variety of laboratory-based systems to quantitatively measure and analyse body movement. This includes systems for movement analysis of dystonia [72], tremor [11,33,95], bradykinesia [29,65], gait [8,48,61] and levodopa induced dyskinesias [37,55].…”

Section: Movement Pattern Analysismentioning

confidence: 99%

Stereotactic implantation of deep brain stimulation electrodes: a review of technical systems, methods and emerging tools

Hemm¹,

Wårdell²

2010

Med Biol Eng Comput

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Deep brain stimulation (DBS) has become increasingly important for the treatment and relieve of neurological disorders such as Parkinson's disease, tremor, dystonia and psychiatric illness. As DBS implantations, and any other stereotactic and functional surgical procedure, require accurate, precise and safe targeting of the brain structure, the technical aids for preoperative planning, intervention and postoperative follow up have become increasingly important. The aim of this paper is to give an overview, from a biomedical engineering perspective, of a typical implantation procedure and current supporting techniques.Furthermore emerging technical aids not yet clinically established are presented. This includes the state-of-the-art of patient specific simulation of DBS electric field, optical methods for intracerebral guidance, movement pattern analysis, new stimulation devices and trends related to neuroimaging, visualization and navigation. As DBS surgery already today is an information technology intensive domain an "intuitive visualization" interface for improving management of these data in relation to surgery is suggested.

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Acute and Lingering Impairments in Post-concussion Postural Control

Buckley

2014

Concussions in Athletics

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Gait initiation in older adults with postural instability

Abstract: Background-This study examined changes in the translation of the center of pressure during forward and lateral (90 degrees to the side) gait initiation in two populations of older adults with postural instability.

Cited by 101 publications

References 42 publications

Effects of cognitive task on gait initiation in Parkinson disease: Evidence of motor prioritization?

Effects of cognitive task on gait initiation in Parkinson disease: Evidence of motor prioritization?

Stereotactic implantation of deep brain stimulation electrodes: a review of technical systems, methods and emerging tools

Acute and Lingering Impairments in Post-concussion Postural Control

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