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Quantifying arm nonuse in individuals poststroke.

Cheol E Han1, Sujin Kim, Shuya Chen

  • 1University of Southern California, Los Angeles, CA 90089-9006, USA.

Neurorehabilitation and Neural Repair
|January 29, 2013
PubMed
Summary
This summary is machine-generated.

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Researchers quantified post-stroke arm nonuse using the Bilateral Arm Reaching Test (BART). BART is a reliable and valid tool for measuring arm use and nonuse in stroke survivors.

Area of Science:

  • Neuroscience
  • Rehabilitation Medicine
  • Biomedical Engineering

Background:

  • Arm nonuse, the discrepancy between potential and actual arm use post-stroke, remains unquantified.
  • Understanding and quantifying arm nonuse is crucial for stroke recovery and rehabilitation.

Purpose of the Study:

  • To quantify arm nonuse in individuals following a stroke.
  • To develop and validate the Bilateral Arm Reaching Test (BART) as a novel instrument for measuring arm use and nonuse.

Main Methods:

  • Nonuse was quantified using the Actual Amount of Use Test (AAUT) Quality of Movement (QOM) subscale.
  • The Bilateral Arm Reaching Test (BART) was developed and tested, comparing arm performance in spontaneous versus constrained use conditions.
  • BART assesses reaching performance to visual targets in a 2D horizontal workspace.
Keywords:
hemiparesisoutcomes assessmentphysical therapystroke rehabilitationupper extremity

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Main Results:

  • All 24 participants with chronic stroke and mild-to-moderate impairment demonstrated arm nonuse with the AAUT QOM.
  • The BART demonstrated excellent test-retest reliability and good external validity for quantifying nonuse.
  • BART effectively measured differences in arm use between spontaneous and constrained conditions.

Conclusions:

  • The Bilateral Arm Reaching Test (BART) is the first practical clinical instrument for quantifying arm use and nonuse post-stroke.
  • BART can be used repeatedly in clinical settings to assess neurorehabilitation effects on arm use.
  • BART aids laboratory research in understanding arm use recovery and the development of "learned nonuse" after stroke.