Conceptual and Technical Aspects of Full-Body Motion Support in Virtual and Mixed Reality<bold> </bold>

Full-body motion support has been extensively utilized as a means to an end, rather than an impactful factor of concepts such as Body Ownership Illusion (BOI) and the immersive virtual experience. In addition, technical setups are seldom co-related to a study's findings, even though system, equipment and implementation quality are fundamental components that may vastly affect user experience. This study presents a Mixed Reality (MR) environment in which 21 participants had to interact with real objects accurately represented in the virtual space, while having full-body motion control of their avatar with the use of Inverse Kinematics. Sense of presence, BOI, perceived realism and equipment invasiveness were examined in regard to having full-body motion control and real-virtual object handling. Preliminary results indicate that fullbody motion support increases BOI, however with high levels of BOI, presence and overall engagement are not concomitant to perceived realism of the virtual environment and experience.<bold> </bold>