Lumbar Supports: Most of the office chairs in use today do not provide correct lumbar support. This is even true of seats which claim ergonomic design. Most seat-backs either have no lumbar shape, or it is a small bump set too low - behind the pelvis rather than the lumbar vertebrae.

Inadequate lumbar support leads to a slouched posture which raises pressure in the spinous discs, loads the tendons in the spine, and keeps the back muscles stretched. This inhibits recovery from daily back stresses, and can lead to back damage in its own right (for more information visit www.backinfo.co.uk).

Lumbar pads are cushions that attach to the back of seats in order to provide better support to the lower back.

They are inexpensive, but a well-designed lumbar support can improve comfort and reduce back pain. Sometimes sciatica (pain in the legs from back damage) can be instantly 'switched off' by correct lumbar support. Generally you can expect to improve most forms of back problem, especially if you combine a lumbar pad with other revisions to your posture and workstation.

There are various designs on the market. Examples include the chunky Fellowes Back Support, the swiss-roll type McKenzie Lumbar Roll and the highly moulded Back Friend. However, none of these really matches the shape of the spine, and most either create uncomfortable pressure peaks, or bulge, pressing on the internal organs below the rib cage. Beware of vendors who might appear to have the endorsement of the National Back Pain Association - they don't!

Because we were unconvinced by existing designs, we designed our own. This has been shaped using PeopleSize data to a feather edge at top and bottom. Because it fits better, it can use a softer foam, and so it spreads support pressure over the maximum area without causing discomfort.

The Open Ergonomics Back Support For more information, please visit: Anti-Ache Lumbar Support.

Prices for lumbar pads range from £10 to £80 and supports can be purchased from Mobility shops, some office suppliers, car shops, the Boots Active and Independent catalogue, and direct from suppliers. The Open Ergonomics support costs £29.

If you purchase a lumbar support be sure to read the instructions carefully and allow time to become used to the level of support it provides.