GymSoles++: Using Smart Wearbales to Improve Body Posture when Performing Squats and Dead-Lifts.

Squats and dead-lifts are considered two important full-body exercises for beginners, which can be performed at home or the gymnasium. During the execution of these exercises, it is essential to maintain the correct body posture to avoid injuries. In this paper, we demonstrate an unobtrusive sensing approach, an insole-based wearable system that also provides feedback on the user's centre of pressure (CoP) via vibrotactile and visual aids. Solely visualizing the CoP can significantly improve body posture and thus effectively assist users when performing squats and dead-lifts. We explored different feedback modalities and conclude that a vibrotactile insole is a practical and effective solution.