Abstract:
BACKGROUND:Establishing gait symmetry is a major aim of amputee rehabilitation and may be more attainable with powered prostheses. Though, based on previous work, we postulate that users transfer a previously-learned motor pattern across devices, limiting the functionality of more advanced prostheses. The objective of this study was to preliminarily investigate the effect of increased stance time via visual feedback on amputees' gait symmetry using powered and passive knee prostheses. METHODS:Five individuals with transfemoral amputation or knee disarticulation walked at their self-selected speed on a treadmill. Visual feedback was used to promote an increase in the amputated-limb stance time. Individuals were fit with a commercially-available powered prosthesis by a certified prosthetist and practiced walking during a prior visit. The same protocol was completed with a passive knee and powered knee prosthesis on separate days. We used repeated-measures, two-way ANOVA (alpha = 0.05) to test for significant effects of the feedback and device factors. Our main outcome measures were stance time asymmetry, peak anterior-posterior ground reaction forces, and peak anterior propulsion asymmetry. RESULTS:Increasing the amputated-limb stance time via visual feedback significantly improved the stance time symmetry (p = 0.012) and peak propulsion symmetry (p = 0.036) of individuals walking with both prostheses. With the powered knee prosthesis, the highest feedback target elicited 36% improvement in stance time symmetry, 22% increase in prosthesis-side peak propulsion, and 47% improvement in peak propulsion symmetry compared to a no feedback condition. The changes with feedback were not different with the passive prosthesis, and the main effects of device/ prosthesis type were not statistically different. However, subject by device interactions were significant, indicating individuals did not respond consistently with each device (e.g. prosthesis-side propulsion remained comparable to or was greater with the powered versus passive prosthesis for different subjects). Overall, prosthesis-side peak propulsion averaged across conditions was 31% greater with the powered prosthesis and peak propulsion asymmetry improved by 48% with the powered prosthesis. CONCLUSIONS:Increasing prosthesis-side stance time via visual feedback favorably improved individuals' temporal and propulsive symmetry. The powered prosthesis commonly enabled greater propulsion, but individuals adapted to each device with varying behavior, requiring further investigation.
journal_name
J Neuroeng Rehabiljournal_title
Journal of neuroengineering and rehabilitationauthors
Brandt A,Riddick W,Stallrich J,Lewek M,Huang HHdoi
10.1186/s12984-019-0583-zsubject
Has Abstractpub_date
2019-09-11 00:00:00pages
112issue
1issn
1743-0003pii
10.1186/s12984-019-0583-zjournal_volume
16pub_type
杂志文章abstract:BACKGROUND:High-frequency trains of electrical stimulation applied over the human muscles can generate forces higher than would be expected by direct activation of motor axons, as evidenced by an unexpected relation between the stimuli and the evoked contractions, originating what has been called "extra forces". This p...
journal_title:Journal of neuroengineering and rehabilitation
pub_type: 杂志文章
doi:10.1186/1743-0003-10-32
更新日期:2013-03-25 00:00:00
abstract:BACKGROUND:Brain-computer interfaces (BCIs) have demonstrated the potential to provide paralyzed individuals with new means of communication, but an electroencephalography (EEG)-based endogenous BCI has never been successfully used for communication with a patient in a completely locked-in state (CLIS). METHODS:In thi...
journal_title:Journal of neuroengineering and rehabilitation
pub_type: 杂志文章
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journal_title:Journal of neuroengineering and rehabilitation
pub_type: 临床试验,杂志文章
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journal_title:Journal of neuroengineering and rehabilitation
pub_type: 杂志文章
doi:10.1186/1743-0003-8-25
更新日期:2011-05-09 00:00:00
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journal_title:Journal of neuroengineering and rehabilitation
pub_type: 杂志文章
doi:10.1186/s12984-017-0294-2
更新日期:2017-08-25 00:00:00
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journal_title:Journal of neuroengineering and rehabilitation
pub_type: 杂志文章
doi:10.1186/s12984-019-0635-4
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abstract:BACKGROUND:The RAPPER II study investigates the feasibility, safety and acceptability of using the REX self-stabilising robotic exoskeleton in people with spinal cord injury (SCI) who are obligatory wheelchair users. Feasibility is assessed by the completion of transfer into the REX device, competency in achieving auto...
journal_title:Journal of neuroengineering and rehabilitation
pub_type: 杂志文章
doi:10.1186/s12984-017-0274-6
更新日期:2017-06-19 00:00:00
abstract:BACKGROUND:Impairments in dexterity after stroke are commonly assessed by the Nine Hole Peg Test (NHPT), where the only outcome variable is the time taken to complete the test. We aimed to kinematically quantify and to compare the motor performance of the NHPT in persons post-stroke and controls (discriminant validity)...
journal_title:Journal of neuroengineering and rehabilitation
pub_type: 杂志文章
doi:10.1186/s12984-019-0479-y
更新日期:2019-01-14 00:00:00
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journal_title:Journal of neuroengineering and rehabilitation
pub_type: 杂志文章
doi:10.1186/1743-0003-10-96
更新日期:2013-08-14 00:00:00
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journal_title:Journal of neuroengineering and rehabilitation
pub_type: 杂志文章
doi:10.1186/s12984-018-0395-6
更新日期:2018-06-22 00:00:00
abstract:BACKGROUND:Previous studies demonstrated that stroke survivors have a limited capacity to increase their walking speeds beyond their self-selected maximum walking speed (SMWS). The purpose of this study was to determine the capacity of stroke survivors to reach faster speeds than their SMWS while walking on a treadmill...
journal_title:Journal of neuroengineering and rehabilitation
pub_type: 杂志文章
doi:10.1186/1743-0003-9-80
更新日期:2012-10-11 00:00:00
abstract:BACKGROUND:Robotic and non-robotic training devices are increasingly being used in the rehabilitation of upper limb function in subjects with neurological disorders. As well as being used for training such devices can also provide ongoing assessments during the training sessions. Therefore, it is mandatory to understan...
journal_title:Journal of neuroengineering and rehabilitation
pub_type: 杂志文章
doi:10.1186/1743-0003-9-37
更新日期:2012-06-09 00:00:00
abstract:BACKGROUND:Despite numerous trials investigating robot-assisted therapy (RT) effects on upper-extremity (UE) function after stroke, few have explored the relationship between three-dimensional (3D) reach-to-target kinematics and clinical outcomes. The objectives of this study were to 1) investigate the correlation betw...
journal_title:Journal of neuroengineering and rehabilitation
pub_type: 杂志文章
doi:10.1186/s12984-020-00730-1
更新日期:2020-08-08 00:00:00
abstract:BACKGROUND:Rehabilitation robotics is progressing towards developing robots that can be used as advanced tools to augment the role of a therapist. These robots are capable of not only offering more frequent and more accessible therapies but also providing new insights into treatment effectiveness based on their ability...
journal_title:Journal of neuroengineering and rehabilitation
pub_type: 杂志文章
doi:10.1186/1743-0003-10-102
更新日期:2013-09-28 00:00:00
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journal_title:Journal of neuroengineering and rehabilitation
pub_type: 杂志文章
doi:10.1186/1743-0003-4-13
更新日期:2007-05-09 00:00:00
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journal_title:Journal of neuroengineering and rehabilitation
pub_type: 杂志文章,评审
doi:10.1186/1743-0003-11-142
更新日期:2014-10-06 00:00:00
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journal_title:Journal of neuroengineering and rehabilitation
pub_type: 杂志文章
doi:10.1186/1743-0003-7-22
更新日期:2010-05-21 00:00:00
abstract:BACKGROUND:Previous reports of the mechanics and energetics of post-stroke hemiparetic walking have either not combined estimates of mechanical and metabolic energy or computed external mechanical work based on the limited combined limbs method. Here we present a comparison of the mechanics and energetics of hemipareti...
journal_title:Journal of neuroengineering and rehabilitation
pub_type: 杂志文章
doi:10.1186/s12984-015-0012-x
更新日期:2015-02-27 00:00:00
abstract:BACKGROUND:Functional electrical stimulation (FES) during repetitive practice of everyday tasks can facilitate recovery of upper limb function following stroke. Reduction in impairment is strongly associated with how closely FES assists performance, with advanced iterative learning control (ILC) technology providing pr...
journal_title:Journal of neuroengineering and rehabilitation
pub_type: 临床试验,杂志文章
doi:10.1186/1743-0003-11-105
更新日期:2014-06-30 00:00:00
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journal_title:Journal of neuroengineering and rehabilitation
pub_type: 杂志文章
doi:10.1186/s12984-018-0380-0
更新日期:2018-06-20 00:00:00
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journal_title:Journal of neuroengineering and rehabilitation
pub_type: 杂志文章
doi:10.1186/1743-0003-4-25
更新日期:2007-07-10 00:00:00
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journal_title:Journal of neuroengineering and rehabilitation
pub_type: 杂志文章
doi:10.1186/1743-0003-11-157
更新日期:2014-11-17 00:00:00
abstract:BACKGROUND:People with severe disabilities, e.g., due to neurodegenerative disease, depend on technology that allows for accurate wheelchair control. For those who cannot operate a wheelchair with a joystick, brain-computer interfaces (BCI) may offer a valuable option. Technology depending on visual or auditory input m...
journal_title:Journal of neuroengineering and rehabilitation
pub_type: 杂志文章
doi:10.1186/1743-0003-11-7
更新日期:2014-01-16 00:00:00
abstract::The general objective of the "Rehabilitation Medicine Summit: Building Research Capacity" was to advance and promote research in medical rehabilitation by making recommendations to expand research capacity. The five elements of research capacity that guided the discussions were: 1) researchers; 2) research culture, en...
journal_title:Journal of neuroengineering and rehabilitation
pub_type: 杂志文章
doi:10.1186/1743-0003-3-1
更新日期:2006-01-03 00:00:00
abstract:BACKGROUND:Event-related desynchronization/synchronization (ERD/ERS) is a relative power decrease/increase of electroencephalogram (EEG) in a specific frequency band during physical motor execution and mental motor imagery, thus it is widely used for the brain-computer interface (BCI) purpose. However what the ERD real...
journal_title:Journal of neuroengineering and rehabilitation
pub_type: 杂志文章
doi:10.1186/1743-0003-11-90
更新日期:2014-05-30 00:00:00
abstract:BACKGROUND:Robotic technologies for neurological assessment provide sensitive, objective measures of behavioural impairments associated with injuries or disease such as stroke. Previous robotic tasks to assess proprioception typically involve single limbs or in some cases both limbs. The challenge with these approaches...
journal_title:Journal of neuroengineering and rehabilitation
pub_type: 杂志文章
doi:10.1186/s12984-020-00721-2
更新日期:2020-07-25 00:00:00
abstract:BACKGROUND:Despite advances in sophisticated robotic hands, intuitive control of and sensory feedback from these prostheses has been limited to only 3-degrees-of-freedom (DOF) with 2 sensory percepts in closed-loop control. A Utah Slanted Electrode Array (USEA) has been used in the past to provide up to 81 sensory perc...
journal_title:Journal of neuroengineering and rehabilitation
pub_type: 临床试验,杂志文章
doi:10.1186/s12984-017-0320-4
更新日期:2017-11-25 00:00:00
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journal_title:Journal of neuroengineering and rehabilitation
pub_type: 杂志文章
doi:10.1186/s12984-016-0179-9
更新日期:2016-07-26 00:00:00
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journal_title:Journal of neuroengineering and rehabilitation
pub_type: 杂志文章
doi:10.1186/1743-0003-10-37
更新日期:2013-04-15 00:00:00
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journal_title:Journal of neuroengineering and rehabilitation
pub_type: 临床试验,杂志文章
doi:10.1186/s12984-019-0600-2
更新日期:2019-10-17 00:00:00