The internal and external obliques, also known as the side, are muscles located in the trunk. The external oblique is the largest and outermost muscle of the abdomen. It extends from the iliac crest to ribs 5 – 12. The internal oblique lies below the external oblique.
What They Do – The obliques are responsible for the movement of the spine.
Spinal Flexion: The obliques work to flex the spine, allowing the spine to move forward while the thorax moves towards the pelvis.
Spinal Rotation: The obliques work to create rotary movement, which allows the spine to move side to side.
Lateral Spinal Flexion: The obliques work to flex the spine, allowing the spine to move left or right while the thorax moves to the side towards the pelvis.
Exercise – Follow the next post and I’ll show you how to do side bridges.