GymSoles enables a correct execution of exercises, such as squats and dead-lifts by solely providing feedback on the Centre of Pressure (CoP). We developed a prototype consisting of a pressure sensitive insole used to calculate the CoP and attached vibration motors to the shoe that visualize the CoP in a haptic way. GymSoles was evaluated with 13 users in a gym. The results show a significantly improved body posture for both exercises, as the effect was clearer for beginners. GymSoles was submitted and accepted at the CHI Conference on Human Factors in Computing Systems Proceedings (CHI 2019) and will be presented in this year in May in Scotland. CHI is a premium venue for late-breaking research on Human-Computer Interaction.


  • Elvitigala D. S., Matthies D. J. C., Weerasinghe C., Shi Y., Nanayakkara S., 2020. GymSoles++: Using Smart Wearables to Improve Body Posture when Performing Squats and Dead-Lifts. In AHs ’20: Augmented Humans International Conference (AHs ’20), March 16–17, 2020, Kaiserslautern, Germany. [DOI], [PDF]
  • Elvitigala, D.S., Matthies, D.J.C., David, L., Weerasinghe, C., & Nanayakkara, S. (2019). GymSoles: Improving Squats and Dead-Lifts by Visualizing the User’s Center of Pressure. In Conference on Human Factors in Computing Systems Proceedings (CHI 2019), May 4–9, 2019, Glasgow, Scotland Uk. ACM. [DOI], [PDF]