Development of on-bed lower extremity exercise system for use with networked virtual space

A virtual space locomotion interface device using lower limb motion at supine position has been developed to allow the users to exercise and communicate with each other at home. The velocity control performance, muscle activity and the energy consumption while using the developed device were evaluated. It was demonstrated that the developed device reflects the user´s subjectivity adequately and the virtual space walking distance is to be set as three times of the actual distance to obtain the same exercise effect