Results of the first interim analysis of the RAPPER II trial in patients with spinal cord injury: ambulation and functional exercise programs in the REX powered walking aid

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,...

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Main Authors: Nick Birch, Jon Graham, Tom Priestley, Chris Heywood, Mohamed Sakel, Angela Gall, Andrew Nunn, Nada Signal
Format: Article
Language:English
Published: BMC 2017-06-01
Series:Journal of NeuroEngineering and Rehabilitation
Subjects:
Online Access:http://link.springer.com/article/10.1186/s12984-017-0274-6
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author Nick Birch
Jon Graham
Tom Priestley
Chris Heywood
Mohamed Sakel
Angela Gall
Andrew Nunn
Nada Signal
author_facet Nick Birch
Jon Graham
Tom Priestley
Chris Heywood
Mohamed Sakel
Angela Gall
Andrew Nunn
Nada Signal
author_sort Nick Birch
collection DOAJ
description 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 autonomous control and completion of upper body exercise in an upright position in the REX device. Safety is measured by the occurrence of serious adverse events. Device acceptability is assessed with a user questionnaire. Methods RAPPER II is a prospective, multi-centre, open label, non-randomised, non-comparative cohort study in people with SCI recruited from neurological rehabilitation centres in the United Kingdom, Australia and New Zealand. This is the planned interim report of the first 20 participants. Each completed a transfer into the REX, were trained to achieve machine control and completed Timed Up and Go (TUG) tests as well as upper body exercises in standing in a single first time session. The time to achieve each task as well as the amount of assistance required was recorded. After finishing the trial tasks a User Experience questionnaire, exploring device acceptability, was completed. Results All participants could transfer into the REX. The mean transfer time was 439 s. Nineteen completed the exercise regime. Eighteen could achieve autonomous control of the REX, 17 of whom needed either no assistance or the help of just one therapist. Eighteen participants completed at least one TUG test in a mean time of 313 s, 15 with the assistance of just one therapist. The questionnaire demonstrated high levels of acceptability amongst users. There were no Serious Adverse Events. Conclusions This first interim analysis of RAPPER II shows that it is feasible and safe for people with SCI to use the REX powered assisted walking device to ambulate and exercise in. Participants with tetraplegia and paraplegia could walk and perform a functional exercise program when standing needing only modest levels of assistance in most cases. User acceptability was high. Trial registration ClinicalTrials.gov , NCT02417532 . Registered 11 April 2015.
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spelling doaj.art-a856f858c4c04bf8acac6f1ca5a411192022-12-22T02:56:56ZengBMCJournal of NeuroEngineering and Rehabilitation1743-00032017-06-0114111010.1186/s12984-017-0274-6Results of the first interim analysis of the RAPPER II trial in patients with spinal cord injury: ambulation and functional exercise programs in the REX powered walking aidNick Birch0Jon Graham1Tom Priestley2Chris Heywood3Mohamed Sakel4Angela Gall5Andrew Nunn6Nada Signal7Consultant Spinal Specialist, The Chris Moody Rehabilitation Centre, Moulton CollegeConsultant Physiotherapist, PhysioFunction Ltd, The Chris Moody Rehabilitation Centre, Moulton CollegeResearch Manager, Rex Bionics PLCClinical Research Fellow, The Chris Moody Rehabilitation Centre, Moulton CollegeConsultant Physician and Director of NeuroRehabilitation, East Kent Hospitals University NHS Foundation TrustConsultant, London Spinal Cord Injury Centre, Royal National Orthopaedic HospitalMedical Director, Victorian Spinal Cord Service, Austin HospitalSenior Research Fellow, AUT UniversityAbstract 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 autonomous control and completion of upper body exercise in an upright position in the REX device. Safety is measured by the occurrence of serious adverse events. Device acceptability is assessed with a user questionnaire. Methods RAPPER II is a prospective, multi-centre, open label, non-randomised, non-comparative cohort study in people with SCI recruited from neurological rehabilitation centres in the United Kingdom, Australia and New Zealand. This is the planned interim report of the first 20 participants. Each completed a transfer into the REX, were trained to achieve machine control and completed Timed Up and Go (TUG) tests as well as upper body exercises in standing in a single first time session. The time to achieve each task as well as the amount of assistance required was recorded. After finishing the trial tasks a User Experience questionnaire, exploring device acceptability, was completed. Results All participants could transfer into the REX. The mean transfer time was 439 s. Nineteen completed the exercise regime. Eighteen could achieve autonomous control of the REX, 17 of whom needed either no assistance or the help of just one therapist. Eighteen participants completed at least one TUG test in a mean time of 313 s, 15 with the assistance of just one therapist. The questionnaire demonstrated high levels of acceptability amongst users. There were no Serious Adverse Events. Conclusions This first interim analysis of RAPPER II shows that it is feasible and safe for people with SCI to use the REX powered assisted walking device to ambulate and exercise in. Participants with tetraplegia and paraplegia could walk and perform a functional exercise program when standing needing only modest levels of assistance in most cases. User acceptability was high. Trial registration ClinicalTrials.gov , NCT02417532 . Registered 11 April 2015.http://link.springer.com/article/10.1186/s12984-017-0274-6Spinal cord injuryTetraplegiaParaplegiaPowered walking aidAssistive technologyPhysiotherapy, Rehabilitation, Robotics
spellingShingle Nick Birch
Jon Graham
Tom Priestley
Chris Heywood
Mohamed Sakel
Angela Gall
Andrew Nunn
Nada Signal
Results of the first interim analysis of the RAPPER II trial in patients with spinal cord injury: ambulation and functional exercise programs in the REX powered walking aid
Journal of NeuroEngineering and Rehabilitation
Spinal cord injury
Tetraplegia
Paraplegia
Powered walking aid
Assistive technology
Physiotherapy, Rehabilitation, Robotics
title Results of the first interim analysis of the RAPPER II trial in patients with spinal cord injury: ambulation and functional exercise programs in the REX powered walking aid
title_full Results of the first interim analysis of the RAPPER II trial in patients with spinal cord injury: ambulation and functional exercise programs in the REX powered walking aid
title_fullStr Results of the first interim analysis of the RAPPER II trial in patients with spinal cord injury: ambulation and functional exercise programs in the REX powered walking aid
title_full_unstemmed Results of the first interim analysis of the RAPPER II trial in patients with spinal cord injury: ambulation and functional exercise programs in the REX powered walking aid
title_short Results of the first interim analysis of the RAPPER II trial in patients with spinal cord injury: ambulation and functional exercise programs in the REX powered walking aid
title_sort results of the first interim analysis of the rapper ii trial in patients with spinal cord injury ambulation and functional exercise programs in the rex powered walking aid
topic Spinal cord injury
Tetraplegia
Paraplegia
Powered walking aid
Assistive technology
Physiotherapy, Rehabilitation, Robotics
url http://link.springer.com/article/10.1186/s12984-017-0274-6
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