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Within-Session Practice Effects in the Jebsen Hand Function Test (JHFT).

Sydney Y Schaefer1, Ashley Saba2, Jessica F Baird3

  • 1Sydney Y. Schaefer, PhD, is Assistant Professor, School of Biological and Health Systems Engineering, Arizona State University, Tempe, and Adjunct Assistant Professor, Department of Physical Therapy and Athletic Training, University of Utah, Salt Lake City; sydney.schaefer@asu.edu.

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Summary
This summary is machine-generated.

The Jebsen Hand Function Test (JHFT) shows significant practice effects, with both dominant and nondominant hands improving over six trials. These findings highlight the importance of considering practice effects when interpreting JHFT results for hand function interventions.

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Area of Science:

  • Occupational Therapy
  • Rehabilitation Medicine
  • Neuroscience

Background:

  • The Jebsen Hand Function Test (JHFT) is a standard clinical tool for assessing hand function.
  • Interpreting intervention effects requires understanding the JHFT's susceptibility to practice effects.
  • Quantifying practice effects is crucial for accurate clinical outcome measurement.

Purpose of the Study:

  • To investigate whether the Jebsen Hand Function Test (JHFT) exhibits significant within-session practice effects.
  • To determine the impact of repeated trials on hand function scores.

Main Methods:

  • Participants completed six consecutive trials of the JHFT.
  • Performance on the JHFT and its subtests was analyzed for changes over trials.
  • Both dominant and nondominant hands were assessed.

Main Results:

  • Significant improvements were observed in both dominant and nondominant hands on the JHFT over six trials.
  • Several subtests of the JHFT demonstrated significant practice effects.
  • Practice effects were evident across repeated administrations of the hand function test.

Conclusions:

  • The JHFT is susceptible to within-session practice effects, impacting hand function scores.
  • Practice effects may influence the interpretation of intervention outcomes.
  • These findings suggest practice effects could potentially indicate motor learning potential or treatment responsiveness.