There is limited information on fatigue of the evertors on frontal plane joint position sense (JPS).
To examine the effects of isokinetic concentric-eccentric fatigue of the evertors on frontal plane JPS of the ankle.
A 2 × 4 factorial design.
Patients or Other Participants:
40 male and female healthy subjects.
JPS was tested at 10° and 20° of inversion and 5° and 10° of eversion in a nonfatigued/fatigued condition. After fatigue of evertors was determined on an isokinetic device, post fatigue testing of JPS occurred.
Main Outcome Measures:
JPS absolute error (AE) for inversion and eversion.
Main effect for condition and angle were significant with pre/post fatigue. There were overestimation of angles postfatigue with AE greater at 20° of inversion (P = .003), followed by 10° of inversion (P < .001), 10° of eversion (P = .005), and 5° of eversion (P = .005).
When the ankle evertors were fatigued, the AE for JPS was significantly higher at all test angles.