We need to stablize our lumbar area and abdominal exercises stimulate that. Research shows muscle contractions in this area increase intra-abdominal pressure via stimulate transversus abdominis muscle and thoracolumbar fascia reactions.

what are abdominal masses near the pancreas

Any thing inside the abdominal cavity is intra-abdominal. The food and water you take is not intra-abdominal. That is extra-abdominal. So any thing inside the lumen of your gastrointesinal system is extra-abdominal. ( This way you can go to the biliary tree as well as to the inside of the glomerulus, through collecting duct. Lol.)

intraabdominal

It is thought that the tear or laceration occurs when there is a sudden increase in intra-abdominal pressure.