How is supination defined in body mechanics?

Supination refers to the movement of a body part where it rotates outward or away from the midline of the body. In the context of the limbs, particularly the forearm and foot, supination involves the external rotation of these body parts. In the forearm, supination is when the palm faces upward, while in the foot, it refers to the movement where the foot rolls outward at the ankle, increasing the arch.

Understanding supination is essential for recognizing how this movement affects biomechanics during running and other physical activities, influencing alignment, weight distribution, and overall movement efficiency. This is crucial for coaches and trainers when assessing an athlete's gait and prescribing exercises that align with their specific movement patterns.