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Study of the user’s cognitive load for a telerehabilitation platform: The nasa-tlx instrument

Abstract:

In recent years, software platforms for medical assistance, such as telerehabilitation, have been of considerable and continuing importance. One of these platforms is ePHoRt, which allows a physical therapist to plan, monitor and evaluate the activity of a patient with serious games. This work evaluates the level of cognitive load that physical therapists have on this platform, with the NASA-TLX methodology. The evaluation of cognitive load was carried out using 6 criteria, such as: mental demand, physical demand, temporary demand, performance, effort, and frustration, carried out on 10 participants who used the platform. An empirical evaluation was performed with the usability questionnaire of the methodology which is based on the subjective perception of the participants. The results suggest that ePHoRt is useful, effective, efficient, easy to use and the interfaces are acceptable.