Context:

The combined effects of strength and proprioception training, especially in individuals with ankle instability, have not been studied extensively.

Objective:

To examine the influence of 6 weeks of strength and proprioception training on measures of muscle fatigue and static balance in those with unilateral functional ankle instability (FAI).

Design:

Pretest–posttest, randomized groups.

Setting:

A climate-controlled sports-medicine research laboratory.

Subjects:

38 subjects with self-reported unilateral FAI.

Measurements:

Muscle fatigue was determined using the median power frequency (fmed) from an electromyographic signal, and static balance was assessed using center-of-pressure values obtained from a triaxial force plate.

Results:

There were no significant effects of the strength or proprioception training on our measures of muscle fatigue and static balance.

Conclusions:

Strength training, proprioception training, and the combination of the 2 failed to improve postural-stability characteristics in a group of subjects with FAI.