Since 1992, Sports Vision, in partnership with Bausch & Lombs, has tested the visual acuity of thousands of Olympic athletes. Sports Vision has 5 centers in Italy and uses Procomp, along with a variety of other techniques, to teach visual acuity. Sports Vision told us that a great Italian ski champion used a MyoTrac in training. The EMG, attached to his chest, emits a warning signal if he breaths thoracically (in the upper chest) to encourage diaphragmatic breathing.