Joon-Gi Shin
ABSTRACT
Prolonged static and unbalanced sitting postures during computer usage contribute to musculoskeletal discomfort. In this paper, we investigated the use of a very slow moving monitor for unobtrusive posture correction. In a first study, we identified display velocities below the perception threshold and observed how users (without being aware) responded by gradually following the monitor's motion. From the result, we designed a robotic monitor that moves imperceptible to counterbalance unbalanced sitting postures and induces posture correction. In an evaluation study (n=12), we had participants work for four hours without and with our prototype (8 in total). Results showed that actuation increased the frequency of non-disruptive swift posture corrections and significantly reduced the duration of unbalanced sitting. Most users appreciated the monitor correcting their posture and reported less physical fatigue. With slow robots, we make the first step toward using actuated objects for unobtrusive behavioral changes.
Supplemental Material
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paper613.zip (1.9 MB)
[Auxiliary_Material_MotionData.pdf] This is the all 12 participants' motion data from the evaluation study. We documented the types and the duration of the participants' postures as well as the monitor motions and visualized them on the timeline (4 hours). This auxiliary material is related to the figure 7 and the subsection 'Posture Correction' where we describe the influence of our system on correcting users' unbalanced postures.
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Index Terms
- Slow Robots for Unobtrusive Posture Correction
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