Abstract
ABSTRACTThe performance of 2 or more attention demanding tasks simultaneously is poorly understood. The purpose of the study was to investigate optimal practice strategies for performing 2 simultaneous tasks. Eighteen young adults walked and stepped over either a static or dynamic obstacle, while responding to an auditory Stroop test. Participants were randomly assigned to 1 of 3 groups: one that practiced both tasks simultaneously, practiced only the cognitive task, or received no practice. Results indicate that only the dual-task practice group showed significantly more improvement in the locomotor task through reduced variability of gait velocity, obstacle clearance, and takeoff distance. Findings demonstrate that the practice of two concurrent, attention demanding tasks results in the best performance improvement for both tasks.
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