Abstract
This study investigates the effect of dual-task on movement of trunk and gait parameters with respect to the difficulty of given task. 18 healthy elderly people (74.9±4.54 y.o.) participated in dual-task walk experiments. Several kinds of recall questions with different difficulties are applied while walking, and gait parameters such as stride length, cadence, max/min tiptoe and movement of trunk as standard derivation of acceleration and angular velocity of the waist are derived using three inertial sensors attached on both tiptoe and waist. The experimental results show that gait parameters and movement of trunk are significantly reduced by applying dual-task and more difficult question.
