What is the primary action of the supinator muscle?

The primary action of the supinator muscle is forearm supination. This muscle is located in the forearm and is responsible for rotating the radius outward, which turns the palm of the hand up or forward, depending on the position of the arm. Supination is the opposite of pronation, and it occurs when the forearm is turned so that the thumb points away from the body.

Understanding the function of the supinator is important for yoga practitioners and instructors, as it plays a crucial role in many poses that require hand positioning and forearm orientation, such as in balancing poses or during transitions. The supinator works in conjunction with other muscles, such as the biceps brachii, to facilitate this movement effectively.