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Related Experiment Video

Updated: May 4, 2026

Evaluating Postural Control and Lower-extremity Muscle Activation in Individuals with Chronic Ankle Instability
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Postural-stability tests that identify individuals with chronic ankle instability.

Shelley W Linens1, Scott E Ross, Brent L Arnold

  • 1Georgia State University, Atlanta.

Journal of Athletic Training
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PubMed
Summary
This summary is machine-generated.

Individuals with chronic ankle instability (CAI) show impaired postural stability. Ten balance tests, including BESS and hop tests, can identify CAI for rehabilitation.

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Area of Science:

  • Biomechanics
  • Sports Medicine
  • Rehabilitation Science

Background:

  • Chronic ankle instability (CAI) often results from recurrent ankle sprains.
  • CAI is associated with deficits in postural stability.
  • Identifying individuals with CAI is crucial for targeted rehabilitation.

Purpose of the Study:

  • To determine if individuals with CAI exhibit poorer postural stability compared to healthy controls.
  • To identify specific balance tests that can differentiate between individuals with and without CAI.

Main Methods:

  • A case-control study design was employed in a laboratory setting.
  • 17 participants with CAI and 17 healthy controls performed 7 balance tests.
  • Balance was assessed using measures like the Balance Error Scoring System (BESS), force plate analysis, and functional hop tests.

Main Results:

  • Significant differences in postural stability were found between CAI and control groups across multiple tests.
  • Ten specific measures, including time-in-balance, BESS errors, center-of-pressure velocity, time-to-boundary, Star Excursion Balance Test, and hop tests, showed significant cutoff scores.
  • These measures effectively distinguished individuals with and without CAI.

Conclusions:

  • Clinicians can utilize 10 identified balance measures and their cutoff scores to diagnose CAI.
  • These findings aid in identifying individuals who would benefit from rehabilitation programs focused on improving postural stability.