Previous studies exposing young participants to trips and slips reported improved post-trip stability (MoS) but such improvements have often been accompanied by an increased toe height during the approach, indicating the use of predictive gait strategies.Rapid improvements in responses to trip-like perturbations (eg, sudden treadmill accelerations and ankle-cable pulls while walking on a treadmill (22)) have also been reported but these perturbations have been of one type (ie, they always induce forward body rotation so responses can be planned) and have not always required clearing an obstacle.