Ipsilateral vs Contralateral Presentation of Familiarization Trials in a Lower-Limb Proprioception Test

We examined the effect of pretest familiarization with ipsilateral or contralateral limbs on the performance in a proprioception test conducted afterwards. Sixty adults were randomly assigned to six different familiarization-session patterns. Ankle proprioception was tested using active movement extent discrimination assessment. The results reflected a beneficial effect of familiarization session on performance in the subsequent proprioception test (ES = 0.777). However, no significant difference was found between proprioceptive acuity scores when familiarization and test happened with either ipsilateral or contralateral limbs (ES= 0.361), or between the tested left and right foot no matter which side was familiarized (ES = 0.343). These results suggest that proprioceptive information from the familiarization session facilitates the subsequent proprioception test and is equally available to both hemispheres without loss of quality.