An important and common component of mobility is changing travel direction when walking. Turning requires the central nervous system to coordinate whole-body reorientation toward a new travel direction, while continuing with the on-going step cycle. Balance maintenance during turning involves complex integration of multiple sensory systems (vestibular, visual, and somatosensory) and motor output. Aging is associated with a slow and progressive decline of the sensory and motor systems as well as their integrative functions.