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 were to measure the mechanical vibration sand the human EMGs in parallel in skiing and the grandeur driving by a new date logger system, and to investigate the these differences between the skiing and the grandeur driving. 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 experiments using this system led us to following important matters; the turning way of grandeur driving was almost equal to that of the skiing, the force output from iEMG (integrated EMG) in grandeur driving was larger than that in skiing. However, the muscle fatigue from MPF (Mean power frequency) was not confirmed. This is the problem of the driving distance in grandeur driving.
