Journal of Sport and Health Science
Purpose: The aim of the study was to determine whether corticospinal excitability and inhibition of the tibialis anterior during single-leg standing differs among individuals with chronic ankle instability (CAI), lateral ankle sprain copers, and healthy controls.
Methods: Twenty-three participants with CAI, 23 lateral ankle sprain copers, and 24 healthy control participants volunteered. Active motor threshold (AMT), normalized motor-evoked potential (MEP), and cortical silent period (CSP) were evaluated by transcranial magnetic stimulation while participants performed a single-leg standing task.
Results: Participants with CAI had significantly longer CSP at 100% of AMT and lower normalized MEP at 120% of AMT compared to lateral ankle sprain copers (CSP100%: p = 0.003, MEP120%: p = 0.044) and controls (CSP 100%: p = 0.041, MEP120%: p = 0.006).
Conclusion: This investigation demonstrated altered corticospinal excitability and inhibition of the tibialis anterior during single-leg standing in participants with CAI. Further research is needed to examine the effects of corticospinal maladaptations to motor control of the tibial anterior on postural control performance in those with CAI.
Original Publication Citation
Terada, M., Kosik, K. B., McCann, R. S., Drinkard, C., & Gribble, P. A. (2020). Corticospinal activity during a single-leg stance in people with chronic ankle instability. Journal of Sport and Health Science. https://doi.org/http://dx.doi.org/10.1016/j.jshs.2020.08.008
Terada, Masafumi; Kosik, Kyle B.; McCann, Ryan S.; Drinkard, Colin; and Gribble, Phillip A., "Corticospinal Activity During A Single-Leg Stance In People With Chronic Ankle Instability" (2020). Rehabilitation Sciences Faculty Publications. 66.