Abstract
Nowadays, sedentary and poor sitting postures mainly cause lumbar spine-related diseases for office workers. According to the related medical theory of sitting posture correction, this paper presents a smart chair SeatPlus that actively corrects the poor sitting posture. To identify and address the issues in sitting posture correction, we iterated our prototype three times following Lean UX design method. We evaluated SeatPlus in terms of system performance and system usability. The accuracy of the sitting posture recognition is higher than 90%, and the effectiveness of correction exceeds 70%. The overall usability of SeatPlus is good especially in two usability dimensions, impact and perceived Ease of Use. Furthermore, we find that the effectiveness of correction positively influences some usability dimensions, while the frequency of correction negatively influences the perceived ease of use.
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Notes
- 1.
Accuracy of Recognition = number of correctly recognized sitting postures/total number of recognized sitting postures.
- 2.
Frequency of Correction = the total number of inflations within 15 min.
- 3.
Effectiveness of Correction = number of the corrections that stimulate users to change the sitting posture/The total number of corrections within 15 min.
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Shen, Z., Wan, X., Jin, Y., Gao, G., Wang, Q., Liu, W. (2021). SeatPlus: A Smart Health Chair Supporting Active Sitting Posture Correction. In: Soares, M.M., Rosenzweig, E., Marcus, A. (eds) Design, User Experience, and Usability: Design for Diversity, Well-being, and Social Development. HCII 2021. Lecture Notes in Computer Science(), vol 12780. Springer, Cham. https://doi.org/10.1007/978-3-030-78224-5_37
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