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  4. 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

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, 2017 · DOI: 10.1186/s12984-017-0274-6 · Published: June 11, 2017

Spinal Cord InjuryAssistive TechnologyRehabilitation

Simple Explanation

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. 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. 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.

Study Duration
Not specified
Participants
20 participants with SCI (C4 to L5)
Evidence Level
Not specified

Key Findings

  • 1
    All participants could transfer into the REX. The mean transfer time was 439 s.
  • 2
    Eighteen could achieve autonomous control of the REX, 17 of whom needed either no assistance or the help of just one therapist.
  • 3
    The questionnaire demonstrated high levels of acceptability amongst users. There were no Serious Adverse Events.

Research Summary

This first planned interim analysis of the results of the RAPPER II trial reports on the largest number of people with SCI using a self-stabilising robotic exoskeleton ever systematically studied. The findings of this study indicate that the REX is feasible and safe to use for ambulatory physical activity and upper body exercise in a rehabilitation environment in people with chronic SCI. Within a single session people with SCI can transfer into, achieve autonomous control of, ambulate and exercise within the REX and as a result it may be widely acceptable to this client group.

Practical Implications

Rehabilitation Resource Allocation

The low level of assistance needed for upper body exercise and ambulatory tasks may have positive implications for rehabilitation resource allocation.

Exercise Options

Self-stabilizing exoskeletons such as the REX offer a broad range of people with SCI the opportunity to exercise their upper bodies in an upright position.

Mobility Extension

REX extends the possibility of upright mobility to a broader range of people with SCI, including those with cervical lesions.

Study Limitations

  • 1
    Relatively small sample size
  • 2
    Limited range of upper body exercises for first-time users
  • 3
    Lack of post intervention follow-up

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