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Related Experiment Videos

Ground reaction force data in functional ankle instability during two cutting movements.

Michael K Dayakidis1, Konstantinos Boudolos

  • 1Sport Biomechanics Laboratory, Department of Sports Medicine and Biology of Exercise, Faculty of Physical Education and Sports Science, University of Athens, Greece. mkdaykidis@hotmail.com

Clinical Biomechanics (Bristol, Avon)
|January 24, 2006
PubMed
Summary

Ankle instability alters ground reaction forces during v-cuts, showing higher initial vertical force. This may be a protective neuromuscular response to prevent further injury in athletes.

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Area of Science:

  • Biomechanics
  • Sports Medicine
  • Orthopedics

Background:

  • Functional ankle instability impacts athletic performance, particularly in cutting movements.
  • Limited research exists on ground reaction forces in athletes with ankle instability compared to healthy individuals.

Purpose of the Study:

  • To compare ground reaction forces during v-cut and defensive shuffle movements between athletes with and without functional ankle instability.

Main Methods:

  • Fifteen male basketball players with unilateral functional ankle instability and 17 matched controls performed v-cuts and defensive shuffles.
  • Ground reaction forces were measured using synchronized force platforms.
  • Data were analyzed using ANOVA and paired t-tests.

Main Results:

Related Experiment Videos

  • Ankles with functional instability exhibited significantly higher peak vertical ground reaction forces during v-cuts compared to their unaffected joints and controls.
  • A lower relative time to peak force was observed in unstable ankles during v-cuts.
  • No significant differences in ground reaction forces were found between groups during defensive shuffles.

Conclusions:

  • Functional ankle instability is associated with altered ground reaction force patterns, characterized by a rapid, high vertical force onset during v-cuts.
  • This rapid force application might represent a neuromuscular adaptation to enhance joint stability and mitigate inversion injury risks.
  • The findings highlight potential biomechanical differences in athletes with ankle instability during sport-specific movements.