Abstract:
BACKGROUND:Wrist-worn accelerometry provides objective monitoring of upper-extremity functional use, such as reaching tasks, but also detects nonfunctional movements, leading to ambiguity in monitoring results. OBJECTIVE:Compare machine learning algorithms with standard methods (counts ratio) to improve accuracy in detecting functional activity. METHODS:Healthy controls and individuals with stroke performed unstructured tasks in a simulated community environment (Test duration = 26 ± 8 minutes) while accelerometry and video were synchronously recorded. Human annotators scored each frame of the video as being functional or nonfunctional activity, providing ground truth. Several machine learning algorithms were developed to separate functional from nonfunctional activity in the accelerometer data. We also calculated the counts ratio, which uses a thresholding scheme to calculate the duration of activity in the paretic limb normalized by the less-affected limb. RESULTS:The counts ratio was not significantly correlated with ground truth and had large errors (r = 0.48; P = .16; average error = 52.7%) because of high levels of nonfunctional movement in the paretic limb. Counts did not increase with increased functional movement. The best-performing intrasubject machine learning algorithm had an accuracy of 92.6% in the paretic limb of stroke patients, and the correlation with ground truth was r = 0.99 (P < .001; average error = 3.9%). The best intersubject model had an accuracy of 74.2% and a correlation of r =0.81 (P = .005; average error = 5.2%) with ground truth. CONCLUSIONS:In our sample, the counts ratio did not accurately reflect functional activity. Machine learning algorithms were more accurate, and future work should focus on the development of a clinical tool.
journal_name
Neurorehabil Neural Repairjournal_title
Neurorehabilitation and neural repairauthors
Lum PS,Shu L,Bochniewicz EM,Tran T,Chang LC,Barth J,Dromerick AWdoi
10.1177/1545968320962483subject
Has Abstractpub_date
2020-12-01 00:00:00pages
1078-1087issue
12eissn
1545-9683issn
1552-6844journal_volume
34pub_type
杂志文章abstract:OBJECTIVE:To investigate the individual occurrence of walking-related motor fatigue in persons with multiple sclerosis (PwMS), according to disability level and disease phenotype.Study design This was a cross-sectional, multinational study.Participants They were 208 PwMS from 11 centers with Expanded Disability Status ...
journal_title:Neurorehabilitation and neural repair
pub_type: 杂志文章,多中心研究
doi:10.1177/1545968315597070
更新日期:2016-05-01 00:00:00
abstract:BACKGROUND:Selection of patients who are most and least likely to benefit from constraint-induced therapy (CIT) for the upper extremity is uncertain. OBJECTIVE:This study investigated demographic and clinical characteristics that may predict outcomes for a distributed form of CIT. METHODS:A group of 57 patients were ...
journal_title:Neurorehabilitation and neural repair
pub_type: 杂志文章
doi:10.1177/1545968308321773
更新日期:2009-05-01 00:00:00
abstract:BACKGROUND:Recovery from stroke is often said to have "plateaued" after 6 to 12 months. Yet training can still improve performance even in the chronic phase. Here we investigate the biomechanics of accuracy improvements during a reaching task and test whether they are affected by the speed at which movements are practi...
journal_title:Neurorehabilitation and neural repair
pub_type: 杂志文章,随机对照试验
doi:10.1177/1545968317693112
更新日期:2017-06-01 00:00:00
abstract:BACKGROUND:Limited data are available about the effectiveness of early rehabilitation after stroke. OBJECTIVE:This is the 1st randomized controlled trial of constraint-induced movement therapy (CIMT) in subacute stroke to investigate neurophysiologic mechanisms and long-term outcome. METHODS:Within 2 weeks after stro...
journal_title:Neurorehabilitation and neural repair
pub_type: 杂志文章,随机对照试验
doi:10.1177/1545968306291858
更新日期:2007-01-01 00:00:00
abstract::Approximately one-third of stroke patients suffer visual field impairment as a result of their strokes. However, studies using the visual pathway as a paradigm for studying poststroke recovery are limited. In this article, we propose that the visual pathway has many features that make it an excellent model system for ...
journal_title:Neurorehabilitation and neural repair
pub_type: 杂志文章
doi:10.1177/1545968319827569
更新日期:2019-02-01 00:00:00
abstract:OBJECTIVE:A variety of rehabilitation strategies have been tried in patients with chronic hemianopia and quadrantanopia. The authors compared 2 approaches of blind field exploration in those with recent onset of disease. METHODS:A total of 20 patients with visual field defects were studied between 3 and 24 weeks prima...
journal_title:Neurorehabilitation and neural repair
pub_type: 杂志文章,随机对照试验
doi:10.1177/1545968310372774
更新日期:2010-09-01 00:00:00
abstract:BACKGROUND:Dysphagia diagnosis is limited by our inability to evaluate the underlying neuromuscular pathology of swallowing. A novel approach using pharyngeal surface electromyography (PsEMG) has been reported in the literature. OBJECTIVE:Three exploratory projects were undertaken to provide data toward the validation...
journal_title:Neurorehabilitation and neural repair
pub_type: 杂志文章
doi:10.1177/1545968306293448
更新日期:2007-05-01 00:00:00
abstract::Objectives. Memory training in combination with practice in semantic structuring and word fluency has been shown to improve memory performance. This study investigated the efficacy of a working memory training combined with exercises in semantic structuring and word fluency and examined whether training effects genera...
journal_title:Neurorehabilitation and neural repair
pub_type: 杂志文章,随机对照试验
doi:10.1177/1545968314527352
更新日期:2015-01-01 00:00:00
abstract:PURPOSE:Sarcopenia and increased fat infiltration in muscle may play a role in the functional impairment and high risk for diabetes in stroke. Our purpose was to compare muscle volume and muscle attenuation across 6 muscles of the paretic and nonparetic thigh and examine the relationships between intramuscular fat and ...
journal_title:Neurorehabilitation and neural repair
pub_type: 杂志文章
doi:10.1177/1545968311408920
更新日期:2011-11-01 00:00:00
abstract:BACKGROUND:Individuals with stroke often sustain bone loss on the hemiparetic side and are prone to fragility fractures. Exercise training may be a viable way to promote bone mineral density (BMD) and geometry in this population. OBJECTIVE:This was a pilot study to evaluate the effects of a 6-month treadmill exercise ...
journal_title:Neurorehabilitation and neural repair
pub_type: 杂志文章
doi:10.1177/1545968309353326
更新日期:2010-05-01 00:00:00
abstract::A major problem in neurorehabilitation is the lack of objective outcomes to measure movement quality. Movement quality features, such as coordination and stability, are essential for everyday motor actions. These features allow reacting to continuously changing environment or to resist external perturbations. Neurolog...
journal_title:Neurorehabilitation and neural repair
pub_type: 杂志文章
doi:10.1177/1545968320969936
更新日期:2020-12-01 00:00:00
abstract:BACKGROUND:Interfacing an amputee's upper-extremity stump nerves to control a robotic hand requires training of the individual and algorithms to process interactions between cortical and peripheral signals. OBJECTIVE:To evaluate for the first time whether EEG-driven analysis of peripheral neural signals as an amputee ...
journal_title:Neurorehabilitation and neural repair
pub_type: 杂志文章
doi:10.1177/1545968311408919
更新日期:2012-03-01 00:00:00
abstract:BACKGROUND:Surface electrical stimulation of the abdominal muscles, with electrodes placed in the posterolateral position, combined with a voluntary cough can assist clearance of airway secretions in individuals with high-level spinal cord injury (SCI). OBJECTIVE:To determine whether an increase in stimulus intensity ...
journal_title:Neurorehabilitation and neural repair
pub_type: 杂志文章
doi:10.1177/1545968314552527
更新日期:2015-05-01 00:00:00
abstract::Objective. Stroke recovery is a multidimensional process influenced by biological and psychosocial factors. To understand the latter, we mapped the social networks of stroke patients, analyzing their changes and effects on physical function at 3 and 6 months after stroke. Methods. We used a quantitative social network...
journal_title:Neurorehabilitation and neural repair
pub_type: 杂志文章,多中心研究
doi:10.1177/1545968319872994
更新日期:2019-11-01 00:00:00
abstract:BACKGROUND:Recovery of the sit-to-stand (StS) movement early after stroke could be improved by targeting physical therapy at the underlying movement deficits in those people likely to respond. AIM:To compare the movement characteristics of successful and failed StS movements in people early after stroke and identify w...
journal_title:Neurorehabilitation and neural repair
pub_type: 杂志文章,多中心研究,随机对照试验
doi:10.1177/1545968319846119
更新日期:2019-05-01 00:00:00
abstract:BACKGROUND:Although functional imaging and neurophysiological approaches reveal alterations in motor and premotor areas after stroke, insights into neurobiological events underlying these alterations are limited in human studies. OBJECTIVE:We tested whether cerebral metabolites related to neuronal and glial compartmen...
journal_title:Neurorehabilitation and neural repair
pub_type: 杂志文章
doi:10.1177/1545968312469835
更新日期:2013-06-01 00:00:00
abstract:BACKGROUND:. Mental practice through motor imagery improves subsequent motor performance and thus mental training is considered to be a potential tool in neuromotor rehabilitation. OBJECTIVE:. The authors investigated whether a circadian fluctuation of the motor imagery process occurs, which could be relevant in sched...
journal_title:Neurorehabilitation and neural repair
pub_type: 杂志文章
doi:10.1177/1545968308321775
更新日期:2009-03-01 00:00:00
abstract::Background. Severe poststroke arm impairment is associated with greater activation of the nonlesioned hemisphere during movement of the affected arm. The circumstances under which this activation may be adaptive or maladaptive remain unclear. Objective. To identify the functional relevance of key lesioned and nonlesio...
journal_title:Neurorehabilitation and neural repair
pub_type: 杂志文章
doi:10.1177/1545968319876253
更新日期:2020-01-01 00:00:00
abstract:BACKGROUND:Upper limb function plays a significant role in enhancing independence for individuals with tetraplegia. However, there is limited knowledge about the specific input of sensorimotor deficits on upper limb function. Thus the theoretical framework designed to develop the Graded Redefined Assessment of Strength...
journal_title:Neurorehabilitation and neural repair
pub_type: 杂志文章
doi:10.1177/1545968313490998
更新日期:2014-01-01 00:00:00
abstract:BACKGROUND:Contradictory results have been reported for transcranial direct current stimulation (tDCS) as treatment for tinnitus. The recently developed high-definition tDCS (HD tDCS) uses smaller electrodes to limit the excitation to the desired brain areas. OBJECTIVE:The current study consisted of a retrospective pa...
journal_title:Neurorehabilitation and neural repair
pub_type: 杂志文章
doi:10.1177/1545968318787916
更新日期:2018-08-01 00:00:00
abstract:BACKGROUND:Community-dwelling, chronic stroke survivors are at risk of falling during turning and are more likely to sustain a hip fracture when they fall. OBJECTIVE:This study quantifies kinematic differences between stroke survivors (mean +/- SD: 38.3 +/- 31.3 months post-stroke, 59.9 +/- 10.1 years of age), with (n...
journal_title:Neurorehabilitation and neural repair
pub_type: 杂志文章
doi:10.1177/1545968309348508
更新日期:2010-05-01 00:00:00
abstract::Background. Reorganization in motor areas have been suggested after motor imagery training (MIT). However, motor imagery involves a large-scale brain network, in which many regions, andnot only the motor areas, potentially constitute the neural substrate for MIT. Objective. This study aimed to identify the targets for...
journal_title:Neurorehabilitation and neural repair
pub_type: 杂志文章,随机对照试验
doi:10.1177/1545968319899919
更新日期:2020-04-01 00:00:00
abstract::Implementation is the use of strategies to adopt and integrate evidence-based health interventions and to change practice patterns. In their article, "Implementation-the missing link in the research translation pipeline," Lynch et al1 report that only a small fraction of published stroke rehabilitation research in lea...
journal_title:Neurorehabilitation and neural repair
pub_type: 评论,杂志文章
doi:10.1177/1545968318794904
更新日期:2018-09-01 00:00:00
abstract:BACKGROUND:Our ability to sense movement is essential for motor control; however, the impact of kinesthesia deficits on functional recovery is not well monitored in the spinal cord injury (SCI) population. One problem is the lack of accurate and reliable tools to measure kinesthesia. OBJECTIVE:The purpose of this stud...
journal_title:Neurorehabilitation and neural repair
pub_type: 杂志文章
doi:10.1177/1545968315591703
更新日期:2016-03-01 00:00:00
abstract::Background The reliable stratification of homogeneous subgroups and the prediction of future clinical outcomes within heterogeneous neurological disorders is a particularly challenging task. Nonetheless, it is essential for the implementation of targeted care and effective therapeutic interventions. Objective This stu...
journal_title:Neurorehabilitation and neural repair
pub_type: 杂志文章,多中心研究
doi:10.1177/1545968313520413
更新日期:2014-07-01 00:00:00
abstract:PURPOSE:Impaired economy of gait, prevalent in chronic stroke secondary to residual gait deficits, is associated with intolerance for performing activities of daily living. Gait economy/efficiency is traditionally assessed by determining the rate of oxygen consumption during submaximal treadmill walking. However, the m...
journal_title:Neurorehabilitation and neural repair
pub_type: 杂志文章
doi:10.1177/1545968313497103
更新日期:2013-11-01 00:00:00
abstract:BACKGROUND:Many physical interventions can improve locomotor function in individuals with motor incomplete spinal cord injury (iSCI), although the training parameters that maximize recovery are not clear. Previous studies in individuals with other neurologic injuries suggest the intensity of locomotor training (LT) may...
journal_title:Neurorehabilitation and neural repair
pub_type: 杂志文章,随机对照试验
doi:10.1177/1545968317731538
更新日期:2017-10-01 00:00:00
abstract::One in 2 Canadians is expected to acquire cancer in their lifetime. Many cancers, including breast, ovarian, and lung cancer, are treated using taxane chemotherapy with curative intent. A major adverse effect with the use of taxane chemotherapeutic agents is taxane-induced peripheral neuropathy (TIPN). Both positive (...
journal_title:Neurorehabilitation and neural repair
pub_type: 杂志文章,评审
doi:10.1177/1545968319860486
更新日期:2019-10-01 00:00:00
abstract::Proprioception is a vital aspect of motor control and when degraded or lost can have a profound impact on function in diverse clinical populations. This systematic review aimed to identify clinically related tools to measure proprioceptive acuity, to classify the construct(s) underpinning the tools, and to report on t...
journal_title:Neurorehabilitation and neural repair
pub_type: 杂志文章,评审
doi:10.1177/1545968315573055
更新日期:2015-11-01 00:00:00
abstract:BACKGROUND:Several pilot studies have evoked interest in robot-assisted therapy (RAT) in children with cerebral palsy (CP). OBJECTIVE:To assess the effectiveness of RAT in children with CP through a single-blind randomized controlled trial. PATIENTS AND METHODS:Sixteen children with CP were randomized into 2 groups. ...
journal_title:Neurorehabilitation and neural repair
pub_type: 杂志文章,随机对照试验
doi:10.1177/1545968314541172
更新日期:2015-02-01 00:00:00