Bracing the contact means that the two hands must work together instead of each contacting the client separately. Less area of the client’s body will be covered this way, but stronger and more efficient pressure will be created at the area that is being worked, which is more important when deep pressure is needed.
Even perfect body mechanics cannot eliminate all physical stress to your body when doing massage. Ideal body mechanics merely minimize the stress. For this reason, when doing massage, especially deep pressure massage, it is wise to alternate which treatment hand contact you use during a session.
When working the low back, a good strategy is to begin with a smaller treatment contact such as thumb or finger pads to assess and begin treatment of the lumbar region, and then switch to a larger contact such as the palm or elbow to deliver deeper pressure.
For proper body mechanics, it is important to support your contact. Place the thumb pad of your right hand over the thumb pad contact of the left hand to brace/support it. Proper location of the brace is to place the right thumb pad on the dorsal surface of the distal phalanx of the thumb.