Abstract
The purpose of this study was to determine whether a motor learning effect exists during concentric isokinetic testing of the ankle invertor and evertor muscles of the dominant and non-dominant leg. Thirty-three subjects aged 22 to 57 years without any experience in isokinetic testing, were randomly assigned to one out of three test velocity groups (30, 60 or 120°/s). Each velocity group consisted of 11 subjects. Invertors and evertors of the dominant and non-dominant leg were tested. All subjects performed five sets of two maximal concentric inversion-eversion movements on a calibrated CYBEX 6000 dynamometer.
For the invertors of the dominant leg at 30 and 120°/s. the mean PKTQ%B the first set. For the evertors of the dominant leg and the invertors and evertors of the non-dominant leg no statistically significant difference was found.
To exclude possible bias of learning effects in concentric isokinetic testing of inversion-eversion muscles, we advise a practice session of two sets of two maximal inversion-eversion movements.