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Parkinson's disease (PD) is a common neurodegenerative disease that affectsmotor and non-motor symptoms. Postural instability and freezing of gait (FOG)are considered motor symptoms of PD resulting in falling. In this study, weinvestigated the effect of simultaneous use of a robotic walker and a pneumaticwalking assist device (PWAD) for PD patients on gait features. The pneumaticactuated artificial muscle on the leg and actuators on the walker producemutual induced stimulation, allowing the user to suppress FOG and maintain astable gait pattern while walking. The performance of the proposed system wasevaluated by conducting an 8 [m] straight-line walking task by a healthysubject with (a) RW (robotic walker), (b) simultaneous use of an RW and a PWAD,and some gait features for each condition were analyzed. The increasing stridelength and decreasing stance phase duration in the gait cycle suggest thatsimultaneous use of a robotic walker and a pneumatic walking assist devicewould effectively decrease FOG and maintain a stable gait pattern for PDpatients.

A Study on Simultaneous Use of a Robotic Walker and a Pneumatic Walking Assist Device Designed for PD Patients