ABSTRACT
Gait (the style of locomotion) is defined according to the sequence of swing and support phases of the legs when the foot is either in the air (swing) or in contact with the floor (support or stance). Walking is characterized by the occurrence of a period of double support with both feet in contact with the ground, separating periods of single support when the other leg is swung forwards to make the next step. There is no time at which both feet break contact with the ground at the same time, in other words no flight phase.
