Used as a guided / controlled movement into extension to improve range into lumbar extension, as well as improve the muscle control movement. Having your abdominals 'on' during this movement reduced shear load that happens with standing and lying extension, however these IS increased load. So good to do once you are pain free in lying extension, or you have problems with muscle control.
Demonstration and Instructions
Back onto a bench or boxes that will support your weight. Stand with legs apart, hands on hips and elbows back. Keep you abdominals tight and slowly lean backwards towards the bed. Stop before you reach any pain then slowly return
Special Notes
Do not use if you are in the acute stages of a disc bulge unless specifically instructed by your Physio / Practitioner.