Trunk muscle activation patterns and spine kinematics when using an oscillating blade: influence of different postures and blade orientations. Friday, 1 October 2010 | Biomecánica y salud Sánchez-Zuriaga D., Vera-Garcia F. J., Moreside, J. M., y McGill, S. M. (2009). Trunk muscle activation patterns and spine kinematics when using an oscillating blade: influence of different postures and blade orientations. Archives of Physical Medicine and Rehabilitation, 90(6), 1055-1060.