Honors College Thesis

 

Hysteresis and Dissipation Coefficient in Recreational Athletes with Chronic Ankle Instability Compared to Controls Public Deposited

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https://ir.library.oregonstate.edu/concern/honors_college_theses/sj139850t

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  • Ligaments serve to control the movements of bones and joints within the body. Viscoelastic properties, such as hysteresis, allow them to perform their functions; however, these properties may change following injury. Understanding alterations in viscoelastic properties may be useful in diagnosing, tracking, and determining treatment effectiveness in Chronic Ankle Instability (CAI). The purpose of this study was to determine if hysteresis and dissipation coefficient (DC) were altered in recreational athletes with CAI compared to uninjured controls. An instrumented anterior drawer test was applied, and the loading and unloading curves were used to calculate hysteresis and DC. Hysteresis was significantly lower in the CAI group compared to the controls, but DC was not. Individuals with CAI may be less able to absorb and restitute energy associated with physiologic loading than controls, which may perpetuate episodes of giving way at the ankle. Future research should determine if hysteresis and DC are sensitive to CAI and responsive following treatment or rehabilitation intervention.
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