A new method to study sudden ankle inversions during human walking and jumping is presented. Ankle inversions of 258wereelicited using a box containing a trap door. During the gait task, subjects walked at a speed of 4 km/h. At a pre-programmed delayafter left heel strike, an electromagnet released the …

OBJECTIVES: The objectives of this study were (i) To establish whether it is possible to assess by means of a check-list in a reliable way errors which violated biomechanical and ergonomical principles during nursing tasks, and (ii) to study the effectiveness of an ergonomic-educational course by using …