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Development of a method to quantitatively measure arthrogenic muscle inhibition in the peroneals

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  • After a joint injury, arthrogenic muscle inhibition (AMI) leads to decreased neuromuscular control and strength, as neural inhibition prevents volitional activation of the entire motor neuron pool. Traditional rehabilitation techniques such as strength training are unable to effectively reduce AMI and there is a need to identify interventions that can improve neuromuscular function in those with AMI. Clinically, Kinesio Tape® is commonly used by sports medicine practitioners to attempt to achieve this neuromuscular improvement. However, whether Kinesio Tape® can reduce AMI has not been established in past research. This may be due in part to previous studies utilizing healthy study subjects who did not demonstrate a neuromuscular deficit. Research has demonstrated that those with functional ankle instability (FAI) exhibit AMI, and thus the overarching purpose of the present project is to determine whether Kinesio Tape® can reduce AMI in those with FAI. However, the completion of this aim required the development and implementation of an appropriate methodology to quantify AMI in the peroneal muscles, as this has not previously been accomplished. The focus of this presentation is to describe AMI, why it is thought to occur following joint injury, and the challenges associated with developing a method to measure AMI consistently in this muscle group. Commonly, the H-reflex is used to evaluate AMI, but pilot testing illustrated that this could not be consistently measured. The central activation ratio of the muscle was then identified as an alternate method for quantifying AMI, but this technique has not previously been applied to the peroneal muscles. After overcoming several challenges, the central activation ratio method was successfully adapted such that it could be used to quantify AMI of the peroneals. As a result, it is now possible to evaluate the efficacy of Kinesio Tape® in facilitating improved neuromuscular control and strength in individuals with AMI.
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  • Corvallis, Oregon, USA
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