| Sumario: | Purpose A robotic exoskeleton is a promising device to support and expand the physical capabilities of users. The Lower Limb Robotic Exoskeleton (LLRE) could help the elderly walk and retain physical strength. A number of companies, including Honda1, Toyota2, and CYBERDYNE3 have introduced prototypes. The mobility demand of elderly with movement restrictions (EMR) has been noticed. However, this kind of product has not yet become available to everyone because the R&Ds of those LLREs mainly focused on the improvement of physical function and performance but not the elderly patients' self-esteem of psychological state. This causes target users to avoid using LLREs. Therefore, the aim of this research is to obtain the potential requirement of LLREs for active aging. Method LLRE is a relatively unknown but developing product. Because it is difficult to find users, we have applied several methods of qualitative research in this study. First, the related literature for physical requirements and psychological preference of walking and exercise for the elderly was reviewed. Second, four researchers with diverse knowledge domains were interviewed, including those involved in the mechanics of human movement, elderly rehabilitation, assistive technology, and elderly care. Third, the Ansoff Growth Matrix of 30 related walking assisted devices was proposed. Fourth, a participant observation method was applied to a rehabilitation group. Fifth, detailed interviews with two potential users were conducted. Moreover, an evaluation grid method and grounded theory were adopted to analyze these interviews. Results & Discussion The elderly group with restricted mobility was first defined as the Taiwanese above 55 years old with minor diseases of walking (e.g., sarcopenia, knee osteoarthritis stroke with level 4 to 6 of Brunnstrom recovery stage4). Furthermore, the upper middle class of EMR are the potential users for LLRE due to their positive attitudes toward seeking happier retirement. According to Eastern Integrated Consumer Profile5, the most popular dynamic activities for EMR are walking and exercise. Therefore, LLREs should be marketed as an outdoor sporting equipment instead of an assisted walking device. An LLRE designed as a fashion accessory could prevent users from being labelled as disabled and boost their self-confidence. An LLRE might also apply to outdoor community activities, which might improve interpersonal interaction. Therefore, resistance training and health information monitoring are needed, as well as walking assistance. The resistance training could effectively develop the leg muscles to improve the effects of minor walking diseases. The health information could be designed as entertaining elements to inspire community interaction by comparison of EMR. Finally, a novel concept design of LLRE is proposed. The model may provide a new lifestyle to promote active aging.
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