Enhancing Wheelchair Mobility: Virtual Training System Integrating Lateral Trunk Motion

Following an accident or motor impairment from illness, individuals often experience reduced mobility. When lower limb function is affected, individuals may lose the ability to walk and rely on a wheelchair. Despite maintaining upper limb mobility, emotional and societal factors may reduce motivation to use them. The Volting project aims to address this by developing a wheelchair with improved mobility to help users achieve their maximum potential. To overcome the limitations of traditional wheelchair controls, a device called WISP was developed, allowing control of Volting through trunk movements. This not only frees the upper limbs but also encourages users to engage their bodies in mobility. Initial experiments with a professional wheelchair dancer showed rapid adaptation to WISP usage. However, gradual implementation is recommended for non-athletic wheelchair users due to the risk of injury from unfamiliar movements. Therefore, we present a training system for WISP utilization, combining a virtual environment with haptic feedback to aid learning and adjust difficulty levels. Preliminary results demonstrate significant improvements in task completion time, collisions, and spatial errors after three sessions in our virtual environment. Additionally, trunk movements decreased, indicating more efficient adaptation to WISP use. As the next step, we plan to conduct trials with individuals with disabilities in our virtual training system, followed by integrating WISP with Volting to explore enhanced mobility.