Here is a picture showing some of the important deeper muscle groups which corset the spine, creating core stability.
The stronger the core muscles are, the less shear force/compression transferred through the spine.
Better core strength allows the bigger superficial muscles to generate greater power.
If you think you could benefit from core strengthening call Dunsborough Physiotherapy Centre ph: 97 553600
To visit the Dunsborough Physiotherapy Centre website (http://www.dunsborough physio.com.au) click / tap here