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Measurement properties of the Reaching Performance Scale for Stroke.

Flávia P P Vianna de Andrade1,2, Rosimeire S Padula1, Aline C Binda1,3

  • 1Master and Doctoral Program in Physical Therapy, Universidade Cidade de São Paulo, São Paulo, Brazil.

Disability and Rehabilitation
|August 21, 2019
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Summary

The Reaching Performance Scale for Stroke (RPSS) demonstrates excellent reliability and validity for assessing upper limb function in Brazilian-Portuguese speakers post-stroke. This tool effectively quantifies reach-to-grasp movement quality and compensatory strategies.

Keywords:
Strokehemiparesisreachingreproducibility of resultsupper extremity

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Area of Science:

  • Neurorehabilitation
  • Motor control after stroke
  • Clinical assessment tools

Background:

  • Stroke survivors often exhibit impaired upper limb function, necessitating effective assessment tools.
  • Compensatory movements are frequently adopted to overcome motor deficits in the paretic upper limb.
  • Quantitative and qualitative evaluation of reach-to-grasp movements is crucial for rehabilitation planning.

Purpose of the Study:

  • To evaluate the reliability, construct validity, and interpretability of the Brazilian-Portuguese version of the Reaching Performance Scale for Stroke (RPSS).
  • To determine if the RPSS can effectively differentiate between varying levels of upper limb impairment in stroke patients.

Main Methods:

  • Fifty-one stroke individuals with diverse motor impairments were video-recorded performing a reach-to-grasp task.
  • The Brazilian-Portuguese RPSS was administered and its psychometric properties were analyzed.
  • Correlation with the Fugl-Meyer scale was used to assess construct validity.

Main Results:

  • The Brazilian-Portuguese RPSS exhibited excellent intra-rater (ICC=1.00) and inter-rater (ICC=0.98-0.99) reliability.
  • Strong construct validity was found between the RPSS and the Fugl-Meyer scale (rho=0.88-0.89).
  • The scale effectively discriminated between individuals with mild, moderate, and severe upper limb impairment, though ceiling and floor effects were noted.

Conclusions:

  • The Brazilian-Portuguese RPSS is a reliable and valid instrument for assessing upper limb reach-to-grasp movements in stroke survivors.
  • The scale's ability to quantify movement quality and compensatory strategies makes it valuable for clinical practice.
  • RPSS is suitable for use in Brazilian-Portuguese speaking populations, aiding in tailored rehabilitation efforts.