What does supination refer to in terms of foot positioning?

Supination refers to the outward rotational roll position of the foot. This term is often used in biomechanics to describe the way the foot moves during activities such as walking or running. When the foot supinates, the weight shifts to the outside of the foot, and the arch is raised. This position can be important for understanding certain types of gait mechanics and can influence discussions around footwear and injury prevention.

In contrast, the other choices describe different movements or positions: the inward rotational roll relates to pronation, hand positions are described incorrectly as they pertain to supination in the context of the feet, and hand positioning with the palm up or down does not pertain to foot positioning at all. Understanding supination helps fitness professionals assess posture and movement patterns accurately.