Quantitative Analysis of the Gait Variability and Asymmetry Using Inertial Measurement Unit During Dual-task Gait.

Well-established connections exist between increased gait variability and greater fall likelihood in human movement. Therefore, the assessment of gait symmetry can facilitate clinicians' decision-making in the treatment and evaluation of the progression of several diseases. This study proposed a workflow that used two self-developed inertial sensing measurement units (IMU) to collect the lower limb gait data of five subjects and then extracted the gait characteristic parameters to quantify the running process during a single-task condition and a dual-task condition, which requires additional cognitive loads (counting numbers backward).