Abstract
Ski vibration and EMG (Electromyography) measurement have been important in the evaluation of a ski performance or the development of new ski material. The purpose of this study was to measure ski vibration as a physical element and EMG as a physiological element in parallel by a new date logger system. Until now, vibration and EMG could not be measured in parallel using one unit, because the natural frequency of the vibration was different from that of the EMG. In our system, both can be measured electrically over time, in parallel. The skiing experiment using this system led us to following important matters; the vibration of ski board was synchronized with the load to ski board and the vibration over 200Hz on ski board made the high velocity in skiing.
