Deficits in reaction time due to increased motor time of peroneus longus in people with chronic ankle instability
MetadataShow full item record
The purpose of this study was to investigate whether neuromuscular adaptations at the site of injury or neural adaptation remote to the injury are affected in individuals withchronicankleinstability (CAI). Electromyography data were collected from the peroneuslongus (PL) and tibialis anterior during an ankle joint reactiontime task in 12 participants with unilateral CAI and 12 healthy control participants. Following an auditory cue, timeto onset of muscle activity (pre-motortime) and time from onset of muscle activity to movement (motortime) were measured during rapid ankle eversion and dorsiflexion. Reactiontime for ankle eversion on the affected side was significantly slower in the CAI group than the control group, dueto significantly slower motortime for the PL. Changes inmotortime for the affected PL in participants with CAI may be attributed to a combination of factors associated with local tissue changes.
Journal of Biomechanics