The goal of this clinical trial is to develop and validate of a new protocol for multifactorial functional assessment of the kinematics of spinal and total body movements during walking by means of the optoelectronic motion analysis system in healthy and scoliosis subjects. The main questions it aims to answer are: * Is feasibility developing a protocol to assess the spine kinematic during walking? * Is the intra and inter operator reliability of the developed protocol acceptable? * Is the usability of the developed protocol acceptable? During data acquisition a trained therapist placed reflective markers on the skin of the participants in the selected body landmarks. The participants will be asked to perform five trial of walking barefoot on a 6 meters distance at a self-selected normal-pace speed, for each session.