The effects of eversion fatigue on frontal plane joint position sense in the ankle

J Sport Rehabil. 2008 Aug;17(3):257-68. doi: 10.1123/jsr.17.3.257.


Context: There is limited information on fatigue of the evertors on frontal plane joint position sense (JPS).

Objective: To examine the effects of isokinetic concentric-eccentric fatigue of the evertors on frontal plane JPS of the ankle.

Design: A2 x 4 factorial design.

Setting: Research Laboratory.

Patients or other participants: 40 male and female healthy subjects.

Interventions: JPS was tested at 10 degrees and 20 degrees of inversion and 5 degrees and 10 degrees 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.

Results: Main effect for condition and angle were significant with pre/post fatigue. There were overestimation of angles postfatigue with AE greater at 20 degrees of inversion (P = .003), followed by 10 degrees of inversion (P < .001), 10 degrees of eversion (P = .005), and 5 degrees of eversion (P = .005).

Conclusion: When the ankle evertors were fatigued, the AE for JPS was significantly higher at all test angles.

MeSH terms

  • Adult
  • Analysis of Variance
  • Ankle Joint / physiology*
  • Exercise Test
  • Female
  • Humans
  • Male
  • Muscle Contraction / physiology*
  • Muscle Fatigue / physiology*
  • Pilot Projects
  • Posture / physiology*
  • Proprioception / physiology*
  • Time Factors
  • Young Adult