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Related Experiment Video

Updated: Nov 15, 2025

Isokinetic Robotic Device to Improve Test-Retest and Inter-Rater Reliability for Stretch Reflex Measurements in Stroke Patients with Spasticity
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Reaching performance scale for stroke - Test-retest reliability, measurement error, concurrent and discriminant

Sandeep K Subramanian1,2, Melanie C Baniña2,3, Andrea Turolla4

  • 1Department of Neurosciences, University of Montreal, Montreal, Quebec, Canada.

PM & R : the Journal of Injury, Function, and Rehabilitation
|March 6, 2021
PubMed
Summary
This summary is machine-generated.

The Reaching Performance Scale for Stroke (RPSS) demonstrates excellent reliability and validity for assessing upper limb movement quality in chronic stroke survivors. This clinical tool effectively quantifies motor improvements by evaluating movement patterns and compensatory strategies.

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Area of Science:

  • Neurorehabilitation
  • Motor Control
  • Clinical Assessment

Background:

  • Quantifying post-stroke upper limb motor recovery requires detailed assessment of movement quality and compensatory strategies.
  • Existing kinematic measures can be complex; clinical outcomes offer a more accessible approach to evaluating reaching.
  • The Reaching Performance Scale for Stroke (RPSS) was developed to assess movement quality and compensations during reaching tasks.

Purpose of the Study:

  • To evaluate the pilot test-retest reliability of the RPSS.
  • To assess the concurrent and discriminant validity of the RPSS in individuals with chronic stroke.

Main Methods:

  • Retrospective analysis of data from 72 individuals with chronic stroke (hemiparesis ≥6 months).
  • Test-retest reliability assessed using intraclass correlation coefficients (ICCs) on a subset of 14 participants.
  • Concurrent validity examined via Pearson correlations between RPSS items and kinematic outcomes (e.g., trunk displacement, elbow extension). Discriminant validity assessed using logistic regression based on Fugl-Meyer Assessment scores.

Main Results:

  • Excellent test-retest reliability was found for both Close (ICC=0.98) and Far (ICC=0.98) targets.
  • RPSS items showed mild to moderate correlations with corresponding kinematic measures.
  • The RPSS effectively discriminated between individuals with mild and moderate-to-severe motor impairment, with identified cutoff scores for task performance.

Conclusions:

  • The RPSS is a valid clinical outcome measure for assessing movement patterns and compensations in reaching tasks post-stroke.
  • The scale demonstrates excellent pilot test-retest reliability, supporting its use in clinical practice and research.
  • RPSS findings correlate with kinematic data and distinguish between different severity levels of motor impairment.