![](img/project img/HealthSit/healthSit_c.jpg)
HealthSit embeds with six square-type FSR at specific positions and the sit pad (40x40 cm2) ensures that it fits regular office chairs.
![](img/project img/HealthSit/ANN.png)
Based on the data from the combination of multiple FSRs, HealthSit applies a specialized artificial neuron network to recognize sitting postures and variances.
![](img/project img/HealthSit/system overview.png)
HealthSit archives and presents the posture-related information to the user with animated musical feedback to encourage posture dynamics and avoidance of excessive sitting.
As shown in the video, HealthSit facilitates a lower-back stretching exercise that is adapted from this dynamic weight-shifting.
![](img/project img/HealthSit/interaction mode.png)
We identified a typical scenario for HealthSit-assisted fitness breaks: Listening to relaxing music while doing the stretching exercise.
Three working modes were implemented: an interaction-aided, a guided, and a self-directed exercise.
![](img/project img/HealthSit/setup.png)
HealthSit was evaluated in a within-subject experiment with 30 participants.
![](img/project img/HealthSit/data.png)
Comparisons among the three working modes of HealthSit showed the positive effects of system interactivity in enhancing health, workflow, and emotion.
For more information of the HealthSit project:
Ren, X., Yu, B., Lu, Y., Chen, Y., and Pu, P. HealthSit: designing posture-based interaction to promote exercise during fitness breaks. International Journal of Human–Computer Interaction, 2018. [ pdf ]
Ren, X., Lu, Y., Visser, V., Le, P. H., and van den Burg, R. Interaction matters? exploring interactive music as a reminder to break sedentary office time. In Proceedings of the International Symposium on Automation and Robotics in Construction, ISARC, 2017.