Health professionals have used 3D user interfaces as support tools for the elderly rehabilitation, o ering fun and bene cial resources for the practice of physical and cognitive activities to them. In this context, it is necessary to establish mechanisms to evaluate the usability of these interfaces, in order to achieve a balance between functionality, ease of use and sense of well-being. This paper aims to report a pilot usability study for a virtual reality game developed speci cally for the elderly, as a means to identify the needs of this public regarding 3D user interface evaluation. An initial methodology was tested exploring two points of view in the game -rstand third-person, showing good results for seniors. However, the need to include training periods was noted, and an evaluation with a heterogeneous group of seniors to consolidate and optimize the proposed approach, as well as readjust the instruments used.
Health professionals could use 3D user interfaces to support elderly rehabilitation, offering fun and engagement during physical and cognitive activities. The evaluation of these immersive applications needs instruments designed for the specific context. This study presents and validates a new usability evaluation method for 3D user interfaces for the elderly. We developed the UQE-3D questionnaire from previous studies keeping in mind the 3D aspects and technological language suitable for the target public. To apply it, we used a protocol considering a demographic questionnaire, the Mini-Mental State Exam, the 15-item Geriatric Depression Scale, the SUS Scale, the UQE-3D, and a structured interview. We also executed an experiment considering a heterogeneous group with 30 subjects (60+ years), where seven participants were institutionalized elderly. UQE-3D presented good results showing a mean score of 82.60 (range 1-100). UQE-3D and SUS scores did not show a statistically significant difference, highlighting the UQE-3D to be sufficient and effective in identifying the usability issues seen in the assessment of 3D user interfaces for the elderly. The method has the potential to evaluate and ensure the quality of 3D context-specific applications, considering appropriate terminology and contributing to the development of technologies fitting for the elderly.
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