Dr. Konrad Birrer, SGSM senior physician for surgery and sports medicine, Luzern, Switzerland

"Proprioception (our sense of our body's movements and relative position) and proprioceptive training are very important to avoid injury. The kybun shoe is an effective tool for such training sessions; it can be worn the whole time and is very comfortable. It means that you are involved in a kind of constant training session without having to make a lot of effort. In the end I was able to try out the effect myself. Without any specific therapy, just from wearing the kybun shoe, I was able to cure my Achilles tendonitis: the unstable sole strengthened the muscles stabilising my ankle joints, taking the burden off the rest of my overstressed muscles. I recommend the kybun shoe following injuries to the lower extremities, for jobs in standing positions, for sportspeople and for the elderly, to prevent falls."