Effect of performance speed on trunk movement control during the curl-up exercise Tuesday, 14 July 2015 | Biomecánica y salud Barbado, D., Elvira, J. L. L., Moreno, F., y Vera-Garcia, F. J. (2015). Effect of performance speed on trunk movement control during the curl-up exercise. Journal of Human Kinetics, 46, 29-37.