Fig. 1

A Single-step and multiple-steps thresholds and the highest perturbation achieved during single-task and dual-task perturbed walking (Mean ± SEM). *p = 0.036; [B] The number of foot collisions and multiple steps events during single-task and dual-task perturbed walking trials. Abbreviations: PwST Perturbed walking condition without a concurrent cognitive task, PwDT Perturbed walking condition with a concurrent cognitive task