ACE Personal Trainer Practice Exam

What movement occurs parallel to the waistline?

1. Flexion

2. Abduction

3. Rotation

4. Dorsiflexion

The correct answer is: Rotation

The correct choice is rotation, as it involves movement around an axis and can occur parallel to the waistline. This type of movement allows a body part to turn to the left or right, maintaining a horizontal orientation relative to the ground. For instance, when you rotate your torso while keeping your waist and hips stable, your shoulders can move in a way that is parallel to the waistline. In contrast, flexion refers to a bending movement that decreases the angle between body parts, like bending the elbow or knee. Abduction is the movement of a limb away from the midline of the body, such as raising an arm sideways away from the body. Dorsiflexion is a specific movement involving the ankle, where the foot moves upwards towards the shin. Each of these movements does not align with being parallel to the waistline, which is why they do not fit as the correct answer in this context.