By eHow Sports & Fitness Editor
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The oblique muscles are also referred to as the upper hips or the sides of the waist. These muscles control flexion and rotation, allowing side bend and twisting movements at the waist. By strengthening the obliques, the chances of having a back injury decrease and posture and physical appearance improve as well. The following steps explain how to perform one type of oblique exercise properly on a lever twist machine.
eHow Sports & Fitness Editor