In physiotherapy and sports there has always been focus on finding exercise regimens that enhance performance and at the same time are gentle to joint structures. Exercises in open kinetic chain have been used for isolated training of single joint muscles (17-18), while exercises in closed kinetic chain have been considered more “functional” because of increased antagonistic muscle co-activation (19). Increased co-activation of synergists and antagonists has been measured in some weight-bearing exercises (20-21). The term “body- weight-bearing exercise” has been used in the Neurac method to describe exercises that encourage co-activation of synergists and antagonists.while exercises in closed kinetic chain have been considered more “functional” because of increased antagonistic muscle co-activation (19)