Ergonomics

Our body, particularly our spine, needs a support able to adapt to its 3D structure, without causing pain, tissue compression, or improper posture. In order to deepen the biomechanic and ergonomic properties of the Technogel® mattress, we performed several tests at the "Ergonomie Institut of Munich", Germany.

 



The main functional criterion of a mattress with regard to quality of support afforded the body is its ''elasticity''. Taking into account the functions demanded of a mattress (physiologically practical support of the spinal column when lying on the back and on the side; pressure reducing effects on tissue), different elastic properties may be defined which a mattress must possess. The following elastic properties were individually recorded and evaluated during the measurement process.

Simple elastic properties (of the mattresses):

Spring elasticity ("Degree of Hardness"):

This measurement furnishes information on the hardness rating of the mattress in all major reclining zones (shoulder, lumbar, pelvic zone); it denotes the tendential behavior of a mattress to adapt to the greater contact and transmission surfaces (pelvis, back) and thus to function as a support. By providing a level of spring elasticity ("hardness") adapted to the user's weight, a physiological vertebral column contour is guaranteed - by sinking into the mattress.
 

Localized elasticity:

This measurement makes a statement about the pressure-reducing effects of a mattress surface. The more localized elasticity a mattress surface displays, the lower the pressure on the tissue; Localized elasticity describes the ability of a mattress to adapt to even small contact surfaces (e.g., heel, back of the head) and to react elastically immediately only in the loaded area. In this way, mattresses with localized elasticity can adapt more to the surface contours of the individual, the load-transmitting surface increases, and lower contact surface pressures with less tissue loading are produced.

Combined elastic properties (of the mattress measured in combination with the bed base):

Shoulder zone effect:

This measurement provides information about the amount of yield at the shoulder. In a lateral position, the reclining system must yield so that the shoulder can sink in sufficiently (rectilinear support of the vertebral column without lateral bending); in a supine position, the reclining system must provide sufficient support to prevent excessive sinking in and thus an overextension of the cervical vertebral column.
 

Body zone support:

This measurement furnishes information about the reclining system's ability to support the vertebral column in a supine position appropriately for the body contour. The force exerted by the reclining system in the area of the lumbar lordosis to support the double-s shape of the vertebral column is considered a characteristic dimension for body zone support.

To test the two combined elastic functions "shoulder zone effect" and "body zone support", different groups of persons (small/lightweight, medium-sized/medium-weight, large/heavy) are simulated to determine the corresponding suitable features of a reclining system.

The ergonomic functional tests substantiate the high potential of mattress structures equipped with gel layers in regard to biomechanical-elastic functions.

 

 

Great results on Technogel based mattresses were found for every simulated group of persons (small, medium-sized, large), as reported in the graph below.