This is a pose of looking back while running. It could be used in a relay baton-passing scene. Let's draw it with the following points in mind. Is the shoulder of the person who is pulling his or her hand back raised as he or she moves? The point is the twist of the hips as they are looking back. Is the twist of the hips coming from the axis of the pelvis? Is the knee of the leg swung back toward the center? Is the sternocleidomastoid muscle, which is opposite to the direction of swing, taut and drawn?