Figure 2.

Graphic representation of variables analysed.

The upper graphic represents the inversion of the ankle in degrees. The lower graphics represents the reflex EMG response of the peroneus longus (PL) muscle at ankle inversion. The reaction time (c) was determined as the time between the opening of the platform (a) and the beginning of the muscle activation (b). Average EMG level was calculated in four time fractions after the beginning of muscular activity, of 0-25 ms (d), of 26-50 (e), of 51-75 (f) and of 76-100 (g). The maximum EMG peak (h) and the time to the maximum EMG peak (i) after the beginning of muscular activation were also calculated.