Gait Spine Functional Evaluation Protocol

"All measurements will be obtained using an optoelectronic multicamera system for human motion analysis (with eight high-resolution cameras with infrared light and a sampling frequency of 100 Hz.~The experimental protocol require the positioning of markers (plastic spheres covered by reflecting film). Markers will be placed by clinical operators (physiotherapists with training in optoelectronic system for human motion analysis) after training and experience in recognition of the position of spinous and transversal processes, by manual identification.~During the data acquisition protocol, the subject perform five trial of walking barefoot on a 6 m distance at a self-selected normal-pace speed.~Every subject repeated this operations 2 times with 2 different operators."