What does the term 'inversion' refer to in movement of the foot?

The term 'inversion' in the context of foot movement specifically refers to the action of moving the foot inward toward the midline of the body. This movement involves the sole of the foot turning inward, which increases the angle between the foot and the leg. Inversion is an important movement seen in various activities, such as walking, running, and balance exercises, as it plays a crucial role in stabilizing the ankle and foot during these activities.

Understanding inversion is key for group fitness instructors because it helps in designing exercises that strengthen the ankles and enhance proprioception, thus preventing injuries. Inversion is often contrasted with eversion, which would involve moving the foot outward away from the body. Elevating the foot or rotating it indicates different types of movements unrelated to the specific inward motion described by inversion.