General and Specific Strategies Used to Facilitate Locomotor Maneuvers.

摘要: People make anticipatory changes in gait patterns prior to initiating a rapid change of direction. How they prepare will based on their knowledge the maneuver. To investigate specific and general strategies used facilitate locomotor maneuvers, we manipulated subjects’ ability anticipate direction an upcoming lateral “lane-change” examine adjustments, observed four steps immediately preceding maneuver that subjects were instructed perform at known time We hypothesized direction, would proactively decrease margin stability future travel. Our results support this hypothesis: significantly decreased by 69% side ipsilateral during only step This adaptation may have improved energetic efficiency simplified control two instant when received information about When was unknown, adjustments improve actively initiate multiple directions. second hypothesis partially supported as increased width stance phase hip flexion these steps. These modifications generate forces directions maintain equilibrium onset execution However, adapting likely incurred additional cost.