What defines the single support phase in a gait cycle?

The single support phase in a gait cycle is defined by the moment when one foot is on the ground while the other foot is in the air. This phase is crucial because it allows the body to maintain balance and prepare for the next steps in the walking or running process. During single support, forces are transferred through the foot that is on the ground, and this stage contributes significantly to stability and propulsion.

Understanding the dynamics of the gait cycle is essential for assessing and improving movement efficiency in both rehabilitation and athletic training contexts. The transitions between phases—such as double support, where both feet are on the ground, and single limb support—are critical for analyzing gait abnormalities or patterns in patients. This knowledge is particularly beneficial in physical therapy settings, where gait training and corrective strategies are often needed.

Recognizing single support helps practitioners focus on areas such as weight-bearing mechanics, muscle activation, and balance control, all of which play essential roles in functional mobility.