Abstract
Context:There is limited information on the effect of dynamic fatiguing of the plantar flexors on joint-position sense (JPS).Objective:To examine the effects of fatigue on JPS for ankle plantar flexion (PF) and dorsiflexion (DF).Design:A 2 × 2 factorial design.Setting:Research laboratory.Participants:20 healthy subjects (10 men, 10 women; age 21.75 ± 1.48 years).Interventions:The subjects were tested at 10° DF and 20° PF in the nonfatigued and fatigued conditions on a custom-built JPS device. To induce fatigue, subjects stood with both feet in the plantar-flexed position until they could no longer hold the posture.Main Outcome Measures:JPS absolute error was measured at 10° DF and 20° PF.Results:There was no significant main effect for condition, measurement, or interaction between condition and measurement.Conclusion:With no difference between conditions, the main controller of conscious JPS of the lower extremity might be the tibialis anterior.
Published Version
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