Gait speed is a measure commonly used in clinical and research settings to assess walking ability and overall mobility in individuals. It is typically measured as the time it takes a person to walk a certain distance, such as 10 meters or 6 minutes. Gait speed has been shown to be a predictor of various health outcomes, including mortality, functional decline, and cognitive impairment. Research in this area often focuses on how gait speed changes with age, disease, or injury, and how it can be used to assess and monitor the effectiveness of interventions aimed at improving mobility and overall health.