In order to develop perfect abdominal muscles, abdominal oblique crunch is an essential action. But the wrong movement is often the root cause of injury. In the gym, there are many people who hold the back of the head and bend the waist for oblique crunch training! This wrong action will hurt the cervical spine and lumbar spine, and even lead to lumbar deformation. Many people complain about low back pain after sit up training, but rarely examine the standard of their own actions.
Generally speaking, the abdominal muscle trainer in the objective V crunch training equipment is divided into two types: lying posture and sitting posture. The lying posture equipment requires the head and trunk to always keep in contact with the cushion, and hands on the handles on both sides of the ears, which reduces the pressure of the back of the head on the cervical spine. The cable oblique crunch machine in the lying posture can be said to "force" the fitness person to take the correct posture to complete sit ups. There is a device similar to the roller coaster protection lock above the oblique crunch machine. Gently pull it down, and the trunk will keep in contact with the seat back. The belly rolling training is carried out with the counterweight, which can ensure that the upper abdomen of the trainer is fully stimulated while ensuring safety. The two instruments can not only ensure the safety of the trainer, but also ensure the trainer to carry out high-quality abdominal muscle training. Since the stimulation position of the two instruments is the upper abdomen of the trainer, the trainer can choose one of them for training on the training day. As we all know, the abdominal muscle is a muscle that cannot be obtained without high-frequency training. The trainer can complete more than 50 instrumental abdominal muscle training in each group and complete 5 groups.
Anatomy of rectus abdominis: it is located on both sides of the midline of the anterior abdominal wall and is wrapped by the rectus abdominis sheath before and after. It is a flat long banded muscle, and the muscle fibers are covered with 3? Four transverse tendons are separated. The tendon scratch is connected with the anterior wall of the rectus abdominis sheath to prevent the rectus abdominis from shifting during contraction. Starting point: from the upper edge of pubis. Stop: stop at the front of the 5th / 7th costal cartilage and xiphoid process of sternum. Function: rectus abdominis has a large physiological cross section, so it has considerable muscle strength. During upper fixation, both sides contract to tilt the pelvis back. During lower fixation, one side contraction makes the spine bend to the same side; Bilateral contraction causes the spine to bend forward; Lower your ribs and pull your chest down to help you exhale.
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