Modification of the Ladder Rung Walking Task—New Options for Analysis of Skilled Movements

Figure 1

Proposed system of comprehensive analysis of skilled walking. Analysis of steps represents a central part of the system. Foot placement and accuracy is rated, and foot placement errors are counted using the foot fault scoring system (red box) introduced by Metz and Whishaw [13]. Step analysis is complemented by observance of the complete step sequence of a walk and by introduction of new categories for different modes of limb use (green box). Beginning the analysis with the limb that starts walking (start) and tracking consecutive steps can show the detailed sequence of steps and step cycles and enables the recognition of stops and limb idling. Dynamics in limb operation markedly differ between steps and jumps. Modes of limb use contribute to walking pattern and allow conclusion regarding limb coordination and limb interaction (green box).