"Biomechanics of unobstructed locomotion consists of synchronized complex movements of the pelvis, torso, and lower limbs. These movement patterns become more complex as individuals encounter obstacles or negotiate uneven terrain."
This data was taken on 10 healthy young adult individuals investigation specifically the mechanics of the pelvis, torso, and lower limb segments and how they relate to obstacle negotiation of varying sized objects combined with temporal constraints to perform the task.
The data "revealed a significant increase in sagittal (posterior tilt) and frontal (ipsilateral hike) plane pelvic angular displacement and higher sagittal plane posterior torso lean angular displacement with increased obstacle height. Furthermore, both sagittal plane hip and knee maximum joint flexion were significantly higher with increasing heights of the obstacles during negotiation."