The effects of functional ankle instability and induced fatigue on ankle stiffness

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  • March 22, 2019
Creator
  • Kuenze, Christopher
    • Affiliation: College of Arts and Sciences, Department of Exercise and Sport Science
Abstract
  • Objective: To investigate effects of fatigue and functional ankle instability on ankle stiffness. Design: Repeated measures pre-fatigue, post-fatigue measurement of ankle stiffness in stable and functionally unstable ankles. Subjects: Forty subjects (14 men and 26 women, age = 21.7 ± 2.5 years, weight = 173.3 ± 11.0 kilograms, height = 74.7 ± 20.9 centimeters) assigned to stable ankle and functionally unstable ankle groups. Statistical Analysis: Three 2 (stable, functionally unstable) x 2 (pre-fatigue, post-fatigue) mixed model repeated measures ANOVAs. Main Outcome Measure(s): Ankle stiffness, peroneus longus EMG pre-activation, and peroneus longus mean EMG amplitude. Results: No significant differences in ankle stiffness and significant decreases in EMG pre-activation and mean EMG amplitude post-fatigue. Significance: Fatigue alters EMG pre-activation and EMG amplitude but the effect on ankle stiffness remain unclear due to lack of appropriate peroneus fatigue in this study. Key Words: Ankle stiffness, functional ankle instability, peroneus longus fatigue.
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  • In Copyright
Advisor
  • Zinder, Steven
Degree granting institution
  • University of North Carolina at Chapel Hill
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  • Open access
Date uploaded
  • October 11, 2010

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