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Clinical effectiveness and patient perceptions of an ILC mediated by ES system using a robotic workstation

Clinical effectiveness and patient perceptions of an ILC mediated by ES system using a robotic workstation
Clinical effectiveness and patient perceptions of an ILC mediated by ES system using a robotic workstation
Background An inability to perform tasks involving reaching is a common problem following stroke. Evidence supports the use of robotic therapy and electrical stimulation (ES) to reduce upper limb impairments, but current systems may not encourage maximal voluntary contribution from the patient. Iterative Learning Control (ILC) is a technique developed for robotic processes which repeatedly perform a task in order to sequentially improving accuracy. The aim of this study was to test the feasibility of applying ILC mediated by ES to stroke rehabilitation using a robotic workstation, and to measure patients’ perceptions of the system. Methods 5 hemiplegic stroke patients used the workstation (see Figure 1) to track 2 dimensional trajectories, over 18 1 hour sessions within a 3 month period. Outcome measures taken prior to and after the intervention consisted of the Fugl-Meyer Assessment (FMA) and the Action Research Arm Test (ARAT), isometric force and unassisted tracking error. During the intervention patients performed a range of tracking tasks in which their remaining voluntary activity was augmented by ES. Patients were asked questions in each session and undertook a semi structured interview (including Likert style and open questions) subsequent to the study. Results Compliance was excellent. Statistically significant improvements were measured (p?0.05) in: FMA motor score (see Table 1), accuracy of unassisted tracking, and in isometric force. The Likert responses showed that all patients found the intervention enjoyable and would have liked further sessions (see Table 2). Patients’ responses to the open questions on the system effectiveness were classified as physical or functional (see Table 3). Conclusion This study demonstrated the acceptability and feasibility of using ILC mediated by ES for upper limb stroke rehabilitation. Future work will address issues raised in the interview as well as investigating using ES for the wrist and hand.
1015-9770
239-239
Hughes, Ann-Marie
11239f51-de47-4445-9a0d-5b82ddc11dea
Freeman, Christopher
ccdd1272-cdc7-43fb-a1bb-b1ef0bdf5815
Burridge, Jane
0110e9ea-0884-4982-a003-cb6307f38f64
Chappell, Paul
2d2ec52b-e5d0-4c36-ac20-0a86589a880e
Lewin, Paul
78b4fc49-1cb3-4db9-ba90-3ae70c0f639e
Rogers, Eric
611b1de0-c505-472e-a03f-c5294c63bb72
Hughes, Ann-Marie
11239f51-de47-4445-9a0d-5b82ddc11dea
Freeman, Christopher
ccdd1272-cdc7-43fb-a1bb-b1ef0bdf5815
Burridge, Jane
0110e9ea-0884-4982-a003-cb6307f38f64
Chappell, Paul
2d2ec52b-e5d0-4c36-ac20-0a86589a880e
Lewin, Paul
78b4fc49-1cb3-4db9-ba90-3ae70c0f639e
Rogers, Eric
611b1de0-c505-472e-a03f-c5294c63bb72

Hughes, Ann-Marie, Freeman, Christopher, Burridge, Jane, Chappell, Paul, Lewin, Paul and Rogers, Eric (2009) Clinical effectiveness and patient perceptions of an ILC mediated by ES system using a robotic workstation. Cerebrovascular Diseases, 27, supplement 6, 239-239.

Record type: Article

Abstract

Background An inability to perform tasks involving reaching is a common problem following stroke. Evidence supports the use of robotic therapy and electrical stimulation (ES) to reduce upper limb impairments, but current systems may not encourage maximal voluntary contribution from the patient. Iterative Learning Control (ILC) is a technique developed for robotic processes which repeatedly perform a task in order to sequentially improving accuracy. The aim of this study was to test the feasibility of applying ILC mediated by ES to stroke rehabilitation using a robotic workstation, and to measure patients’ perceptions of the system. Methods 5 hemiplegic stroke patients used the workstation (see Figure 1) to track 2 dimensional trajectories, over 18 1 hour sessions within a 3 month period. Outcome measures taken prior to and after the intervention consisted of the Fugl-Meyer Assessment (FMA) and the Action Research Arm Test (ARAT), isometric force and unassisted tracking error. During the intervention patients performed a range of tracking tasks in which their remaining voluntary activity was augmented by ES. Patients were asked questions in each session and undertook a semi structured interview (including Likert style and open questions) subsequent to the study. Results Compliance was excellent. Statistically significant improvements were measured (p?0.05) in: FMA motor score (see Table 1), accuracy of unassisted tracking, and in isometric force. The Likert responses showed that all patients found the intervention enjoyable and would have liked further sessions (see Table 2). Patients’ responses to the open questions on the system effectiveness were classified as physical or functional (see Table 3). Conclusion This study demonstrated the acceptability and feasibility of using ILC mediated by ES for upper limb stroke rehabilitation. Future work will address issues raised in the interview as well as investigating using ES for the wrist and hand.

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Published date: 2009
Organisations: EEE, Southampton Wireless Group

Identifiers

Local EPrints ID: 267415
URI: https://eprints.soton.ac.uk/id/eprint/267415
ISSN: 1015-9770
PURE UUID: 150cf934-8556-4b2c-a340-6acbfe1570db
ORCID for Ann-Marie Hughes: ORCID iD orcid.org/0000-0002-3958-8206
ORCID for Jane Burridge: ORCID iD orcid.org/0000-0003-3497-6725
ORCID for Eric Rogers: ORCID iD orcid.org/0000-0003-0179-9398

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Date deposited: 29 May 2009 10:25
Last modified: 14 Jun 2019 00:39

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Contributors

Author: Jane Burridge ORCID iD
Author: Paul Chappell
Author: Paul Lewin
Author: Eric Rogers ORCID iD

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