Metrics details. Five healthy older adults 2 males and 3 females participated in this study. The usability and acceptability of our system were measured using the system usability scale SUS and the simulator sickness questionnaire SSQ. All participants successfully completed the session without any discomfort. The average score for the SUS was The average score for the SSQ was 2. Peer Review reports. An increase in the population of older adults is associated with an increase in the prevalence of physical, psychological, and social problems.
Additionally, medical expenses have increased substantially over time, putting a strain on national finances. The limited financial support for medical expenses of older adults has resulted in a paradigm shift from existing policies focused on the treatment of diseases to policies for disease prevention by promoting exercise and physical activity [ 1 , 2 ].
Indeed, outdoor activities provide physical, mental, and social advantages for individuals of all ages [ 4 ]. However, currently, it difficult to perform outdoor activities due to the lack of an adequate environment for walking or cycling resulting from is rapid urbanization. Air pollution, such as fine dust, also add to the limitations of outdoor activities [ 5 , 6 ].
Furthermore, older adults need to be cautious while performing outdoor activities, since they are more vulnerable to environmentally harmful factors and more susceptible to circulatory and respiratory diseases due to air pollution compared to younger adults [ 7 ].
Therefore, despite the advantages of the outdoor environment, an alternative is needed that would allow older adults to exercise indoors.
