LIVIVO - The Search Portal for Life Sciences

zur deutschen Oberfläche wechseln
Advanced search

Search results

Result 1 - 7 of total 7

Search options

  1. Article: Upper limb sensorimotor recovery in Asian stroke survivors: a study protocol for the development and implementation of a Technology-Assisted dIgitaL biOmaRker (TAILOR) platform.

    Cheng, Hsiao-Ju / Chin, Lay Fong / Kanzler, Christoph M / Lehner, Rea / Kuah, Christopher W K / Kager, Simone / Josse, Eva / Samkharadze, Tengiz / Sidarta, Ananda / Gonzalez, Pablo Cruz / Lie, Eloise / Zbytniewska-Mégret, Monika / Wee, Seng Kwee / Liang, Phyllis / Gassert, Roger / Chua, Karen / Lambercy, Olivier / Wenderoth, Nicole

    Frontiers in neurology

    2023  Volume 14, Page(s) 1246888

    Abstract: Background: Stroke is a leading cause of lifelong disability worldwide, partially driven by a reduced ability to use the upper limb in daily life causing increased dependence on caregivers. However, post-stroke functional impairments have only been ... ...

    Abstract Background: Stroke is a leading cause of lifelong disability worldwide, partially driven by a reduced ability to use the upper limb in daily life causing increased dependence on caregivers. However, post-stroke functional impairments have only been investigated using limited clinical scores, during short-term longitudinal studies in relatively small patient cohorts. With the addition of technology-based assessments, we propose to complement clinical assessments with more sensitive and objective measures that could more holistically inform on upper limb impairment recovery after stroke, its impact on upper limb use in daily life, and on overall quality of life. This paper describes a pragmatic, longitudinal, observational study protocol aiming to gather a uniquely rich multimodal database to comprehensively describe the time course of upper limb recovery in a representative cohort of 400 Asian adults after stroke. Particularly, we will characterize the longitudinal relationship between upper limb recovery, common post-stroke impairments, functional independence and quality of life.
    Methods: Participants with stroke will be tested at up to eight time points, from within a month to 3 years post-stroke, to capture the influence of transitioning from hospital to community settings. We will perform a battery of established clinical assessments to describe the factors most likely to influence upper limb recovery. Further, we will gather digital health biomarkers from robotic or wearable sensing technology-assisted assessments to sensitively characterize motor and somatosensory impairments and upper limb use in daily life. We will also use both quantitative and qualitative measures to understand health-related quality of life. Lastly, we will describe neurophysiological motor status using transcranial magnetic stimulation.
    Statistics: Descriptive analyses will be first performed to understand post-stroke upper limb impairments and recovery at various time points. The relationships between digital biomarkers and various domains will be explored to inform key aspects of upper limb recovery and its dynamics using correlation matrices. Multiple statistical models will be constructed to characterize the time course of upper limb recovery post-stroke. Subgroups of stroke survivors exhibiting distinct recovery profiles will be identified.
    Conclusion: This is the first study complementing clinical assessments with technology-assisted digital biomarkers to investigate upper limb sensorimotor recovery in Asian stroke survivors. Overall, this study will yield a multimodal data set that longitudinally characterizes post-stroke upper limb recovery in functional impairments, daily-life upper limb use, and health-related quality of life in a large cohort of Asian stroke survivors. This data set generates valuable information on post-stroke upper limb recovery and potentially allows researchers to identify different recovery profiles of subgroups of Asian stroke survivors. This enables the comparisons between the characteristics and recovery profiles of stroke survivors in different regions. Thus, this study lays out the basis to identify early predictors for upper limb recovery, inform clinical decision-making in Asian stroke survivors and establish tailored therapy programs.
    Clinical trial registration: ClinicalTrials.gov, identifier: NCT05322837.
    Language English
    Publishing date 2023-11-30
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2564214-5
    ISSN 1664-2295
    ISSN 1664-2295
    DOI 10.3389/fneur.2023.1246888
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  2. Article ; Online: Work with me, not for me: Relationship between robotic assistance and performance in subacute and chronic stroke patients.

    Kager, Simone / Hussain, Asif / Budhota, Aamani / Dailey, Wayne D / Hughes, Charmayne Ml / Deshmukh, Vishwanath A / Kuah, Christopher Wk / Ng, Chwee Yin / Yam, Lester Hl / Xiang, Liming / Ang, Marcelo H / Chua, Karen Sg / Campolo, Domenico

    Journal of rehabilitation and assistive technologies engineering

    2020  Volume 6, Page(s) 2055668319881583

    Abstract: Introduction: Studies in robotic therapy which applied the performance enhancement approach report improvements in motor performance during training, though these improvements do not always transfer to motor learning.: Objectives: We postulate that ... ...

    Abstract Introduction: Studies in robotic therapy which applied the performance enhancement approach report improvements in motor performance during training, though these improvements do not always transfer to motor learning.
    Objectives: We postulate that there exists an assistance threshold for which performance saturates. Above this threshold, the robot's input outweighs the patient's input and likely learning is not fostered. This study investigated the relationship between assistance and performance changes in stroke patients to find the assistance threshold for performance saturation.
    Methods: Twelve subacute and chronic stroke patients engaged in five sessions (over two weeks, each 60 min) in which they performed a reaching task with the rehabilitation robot H-Man in presence of varying levels of haptic assistance (50 N/m to 290 N/m, randomized order). In two additional sessions, a therapist manually tuned the assistance to promote maximal motor learning.
    Results: Higher levels of assistance resulted in smoother and faster performance that saturated at assistance levels with
    Conclusion: The findings of the study indicate that low levels of assistance (
    Language English
    Publishing date 2020-01-09
    Publishing country England
    Document type Journal Article
    ZDB-ID 2819384-2
    ISSN 2055-6683 ; 2055-6683
    ISSN (online) 2055-6683
    ISSN 2055-6683
    DOI 10.1177/2055668319881583
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  3. Article: Robotic Assisted Upper Limb Training Post Stroke: A Randomized Control Trial Using Combinatory Approach Toward Reducing Workforce Demands.

    Budhota, Aamani / Chua, Karen S G / Hussain, Asif / Kager, Simone / Cherpin, Adèle / Contu, Sara / Vishwanath, Deshmukh / Kuah, Christopher W K / Ng, Chwee Yin / Yam, Lester H L / Loh, Yong Joo / Rajeswaran, Deshan Kumar / Xiang, Liming / Burdet, Etienne / Campolo, Domenico

    Frontiers in neurology

    2021  Volume 12, Page(s) 622014

    Abstract: Post stroke upper limb rehabilitation is a challenging problem with poor outcomes as 40% of survivors have functionally useless upper limbs. Robot-aided therapy (RAT) is a potential method to alleviate the effort of intensive, task-specific, repetitive ... ...

    Abstract Post stroke upper limb rehabilitation is a challenging problem with poor outcomes as 40% of survivors have functionally useless upper limbs. Robot-aided therapy (RAT) is a potential method to alleviate the effort of intensive, task-specific, repetitive upper limb exercises for both patients and therapists. The present study aims to investigate how a time matched combinatory training scheme that incorporates conventional and RAT, using H-Man, compares with conventional training toward reducing workforce demands. In a randomized control trial (NCT02188628, www.clinicaltrials.gov), 44 subacute to chronic stroke survivors with first-ever clinical stroke and predominant arm motor function deficits were recruited and randomized into two groups of 22 subjects: Robotic Therapy (RT) and Conventional Therapy (CT). Both groups received 18 sessions of 90 min; three sessions per week over 6 weeks. In each session, participants of the CT group received 90 min of 1:1 therapist-supervised conventional therapy while participants of the RT group underwent combinatory training which consisted of 60 min of minimally-supervised H-Man therapy followed by 30 min of conventional therapy. The clinical outcomes [Fugl-Meyer (FMA), Action Research Arm Test and, Grip Strength] and the quantitative measures (smoothness, time efficiency, and task error, derived from two robotic assessment tasks) were independently evaluated prior to therapy intervention (week 0), at mid-training (week 3), at the end of training (week 6), and post therapy (week 12 and 24). Significant differences within group were observed at the end of training for all clinical scales compared with baseline [mean and standard deviation of FMA score changes between baseline and week 6; RT: Δ4.41 (3.46) and CT: Δ3.0 (4.0);
    Language English
    Publishing date 2021-06-02
    Publishing country Switzerland
    Document type Case Reports
    ZDB-ID 2564214-5
    ISSN 1664-2295
    ISSN 1664-2295
    DOI 10.3389/fneur.2021.622014
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  4. Article ; Online: The effect of skill level matching in dyadic interaction on learning of a tracing task.

    Kager, Simone / Hussain, Asif / Cherpin, Adele / Melendez-Calderon, Alejandro / Takagi, Atsushi / Endo, Satoshi / Burdet, Etienne / Hirche, Sandra / Ang, Marcelo H / Campolo, Domenico

    IEEE ... International Conference on Rehabilitation Robotics : [proceedings

    2019  Volume 2019, Page(s) 824–829

    Abstract: Dyadic interaction between humans has gained great research interest in the last years. The effects of factors that influence the interaction, as e.g. roles or skill level matching, are still not well understood. In this paper, we further investigated ... ...

    Abstract Dyadic interaction between humans has gained great research interest in the last years. The effects of factors that influence the interaction, as e.g. roles or skill level matching, are still not well understood. In this paper, we further investigated the effect of skill level matching between partners on learning of a visuo-motor task. Understanding the effect of skill level matching is crucial for applications in collaborative rehabilitation. Fifteen healthy participants were asked to trace a path while being subjected to a visuo-motor rotation (Novice). The Novices were paired with a partner, forming one of the three Dyad Types: a) haptic connection to another Novice, b) haptic connection to an Expert (no visuo-motor rotation), or c) no haptic. The intervention consisted of a Familiarization phase, followed by a Training phase, in which the Novices were learning the task in the respective Dyad Type, and a Test phase in which the learning was assessed (haptic connection removed, if any). Results suggest that learning of the task with a haptic connection to an Expert was least beneficial. However, during the Training phase the dyads comprising an Expert clearly outperformed the dyads with matched skill levels. The results point towards the same direction as previous findings in literature and can be explained by current motor-learning theories. Future work needs to corroborate these preliminary results.
    MeSH term(s) Adult ; Female ; Humans ; Learning ; Male ; Motor Skills ; Task Performance and Analysis
    Language English
    Publishing date 2019-07-19
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ISSN 1945-7901
    ISSN (online) 1945-7901
    DOI 10.1109/ICORR.2019.8779485
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  5. Article ; Online: A preliminary study on the relationship between proprioceptive deficits and motor functions in chronic stroke patients.

    Cherpin, Adele / Kager, Simone / Budhota, Aamani / Contu, Sara / Vishwanath, Deshmukh / Kuah, Christopher Wk / Ng, Chwee Yin / Yam, Lester Hl / Xiang, Liming / Hussain, Asif / Karen S G, Chua / Campolo, Domenico

    IEEE ... International Conference on Rehabilitation Robotics : [proceedings

    2019  Volume 2019, Page(s) 465–470

    Abstract: Although motor and sensory impairments of the upper limb after stroke have been widely studied, the relationship between sensory deficits and motor functions has been less thoroughly explored. In this ongoing study, we investigated the relationship ... ...

    Abstract Although motor and sensory impairments of the upper limb after stroke have been widely studied, the relationship between sensory deficits and motor functions has been less thoroughly explored. In this ongoing study, we investigated the relationship between proprioceptive impairments and motor functions with 20 chronic stroke survivors. Their proprioceptive abilities were assessed with a passive joint position matching test using H-Man and their motor functions were assessed with ARAT (Action Research Arm Test) and FMA (Fugl Meyer Upper Extremity Assessment) clinical scores. The assessments were conducted before, during and after the therapy. Results indicated a significant difference between the proprioceptive outcomes of healthy and stroke participants (at baseline) in both matching accuracy (absolute error, p=0.02) and precision (variability of the signed error, p=0.03). Significant correlations were found between the proprioceptive assessment outcomes (assessed before the beginning of the motor rehabilitation) of stroke participants with impaired proprioception and their ARAT clinical scores assessed at the first follow-up (week 12) (rho =- 0.74 and p=0.047 for the absolute error; rho =-0.78 and p= 0.03 for the variability of the signed error). The results from this preliminary study indicated a significant relationship between proprioceptive impairments and motor function performances in proprioceptively impaired chronic stroke participants.
    MeSH term(s) Adult ; Aged ; Chronic Disease ; Female ; Humans ; Male ; Middle Aged ; Motor Activity ; Proprioception ; Stroke/physiopathology ; Upper Extremity/physiopathology
    Language English
    Publishing date 2019-07-31
    Publishing country United States
    Document type Clinical Trial ; Journal Article ; Research Support, Non-U.S. Gov't
    ISSN 1945-7901
    ISSN (online) 1945-7901
    DOI 10.1109/ICORR.2019.8779447
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  6. Article ; Online: Quantitative assessment of motor functions post-stroke: Responsiveness of upper-extremity robotic measures and its task dependence.

    Hussain, Asif / Budhota, Aamani / Contu, Sara / Kager, Simone / Vishwanath, Deshmukh A / Kuah, Christopher W K / Yam, Lester H L / Chua, Karen S G / Masia, Lorenzo / Campolo, Domenico

    IEEE ... International Conference on Rehabilitation Robotics : [proceedings

    2017  Volume 2017, Page(s) 1037–1042

    Abstract: Technology aided measures offer a sensitive, accurate and time-efflcient approach for the assessment of sensorimotor function after neurological impairment compared to standard clinical assessments. This preliminary study investigated the relationship ... ...

    Abstract Technology aided measures offer a sensitive, accurate and time-efflcient approach for the assessment of sensorimotor function after neurological impairment compared to standard clinical assessments. This preliminary study investigated the relationship between task definition and its effect on robotic measures using a planar, two degree of freedom, robotic-manipulator (H-Man). Four chronic stroke participants (49.5±11.95 years, 2 Female, FMA: 37.5±13.96) and eight healthy control participants (26.25± 4.70 years, 2 Female) participated in the study. Motor functions were evaluated using line tracing and circle tracing tasks with dominant and nondominant hand of healthy and affected vs. non affected hand of stroke participants. The results show significant dependence of quantitative measures on investigated tasks.
    MeSH term(s) Adult ; Biomechanical Phenomena ; Female ; Humans ; Male ; Middle Aged ; Motor Skills/physiology ; Robotics/instrumentation ; Stroke Rehabilitation/instrumentation ; Stroke Rehabilitation/methods ; Task Performance and Analysis ; Upper Extremity/physiopathology ; Young Adult
    Language English
    Publishing date 2017-08-16
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ISSN 1945-7901
    ISSN (online) 1945-7901
    DOI 10.1109/ICORR.2017.8009386
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  7. Article ; Online: Proprioceptive assessment in clinical settings: Evaluation of joint position sense in upper limb post-stroke using a robotic manipulator.

    Contu, Sara / Hussain, Asif / Kager, Simone / Budhota, Aamani / Deshmukh, Vishwanath A / Kuah, Christopher W K / Yam, Lester H L / Xiang, Liming / Chua, Karen S G / Masia, Lorenzo / Campolo, Domenico

    PloS one

    2017  Volume 12, Issue 11, Page(s) e0183257

    Abstract: Proprioception is a critical component for motor functions and directly affects motor learning after neurological injuries. Conventional methods for its assessment are generally ordinal in nature and hence lack sensitivity. Robotic devices designed to ... ...

    Abstract Proprioception is a critical component for motor functions and directly affects motor learning after neurological injuries. Conventional methods for its assessment are generally ordinal in nature and hence lack sensitivity. Robotic devices designed to promote sensorimotor learning can potentially provide quantitative precise, accurate, and reliable assessments of sensory impairments. In this paper, we investigate the clinical applicability and validity of using a planar 2 degrees of freedom robot to quantitatively assess proprioceptive deficits in post-stroke participants. Nine stroke survivors and nine healthy subjects participated in the study. Participants' hand was passively moved to the target position guided by the H-Man robot (Criterion movement) and were asked to indicate during a second passive movement towards the same target (Matching movement) when they felt that they matched the target position. The assessment was carried out on a planar surface for movements in the forward and oblique directions in the contralateral and ipsilateral sides of the tested arm. The matching performance was evaluated in terms of error magnitude (absolute and signed) and its variability. Stroke patients showed higher variability in the estimation of the target position compared to the healthy participants. Further, an effect of target was found, with lower absolute errors in the contralateral side. Pairwise comparison between individual stroke participant and control participants showed significant proprioceptive deficits in two patients. The proposed assessment of passive joint position sense was inherently simple and all participants, regardless of motor impairment level, could complete it in less than 10 minutes. Therefore, the method can potentially be carried out to detect changes in proprioceptive deficits in clinical settings.
    Language English
    Publishing date 2017
    Publishing country United States
    Document type Journal Article
    ISSN 1932-6203
    ISSN (online) 1932-6203
    DOI 10.1371/journal.pone.0183257
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

To top