A mattress can be thought of as an anti-gravity device, and its primary function is undoubtedly its ability to perfectly conform to the body’s natural curves—particularly the spine’s classic double-S shape, known asits physiological curves. That is why, in this article, we will outline the main benefits of natural latex mattresses. But first, let’s take a look at the structure of the spine.
Understand Your Spine to Reap the Benefits of a Latex Mattress
The spine can be divided into four regions, which, starting from the top, we can call: cervical, thoracic, lumbar, and sacral. In adults, it is straight in the frontal plane (otherwise we would be talking about scoliosis) and divides the body exactly into two symmetrical halves, while in the sagittal plane it has four curves:two anterior curves and two posterior curves. The anterior curves are located in the cervical and lumbar regions and are called lordosis, characterized by mobility, while the posterior curves are located in the thoracic and sacral regions and are called kyphosis, characterized by rigidity. It is precisely this alternation between more mobile curves (lordosis) and more rigid curves (kyphosis) that allows for an upright posture and, at the same time, great flexibility and mobility, correctly distributing mechanical stress.
Curves and flexibility are important factors in counteracting the force of gravity and other external forces.
The bones, muscles, joints, and lower limbs are designed to bear weight and provide support and balance for the trunk. The natural curves of the spine are therefore beneficial, giving it greater capacity to absorb pressure and stressIt is normal to have a certain degree of lordosis and kyphosis; it is not normal for these to increase (hyperlordosis and hyperkyphosis), but it is also not beneficial for them to decrease. Work and sports activities, as well as a sedentary lifestyle, force us into postures that alter the spine’s natural curves.The lumbar region of the spine supports the entire weight of the upper body; this weight is transferred to the pelvis when sitting and to the legs when standing, walking, and running. Consequently, this is the region where pain occurs most frequently. This is why the lumbar vertebrae are necessarily more developed in order to to support the increased load placed on the lower back.
Why Choose the Benefits of a Latex Mattress
When lying down, the body’s natural curves must be supported; for this to happen properly, the mattress must be able to conform to those curves in a way that is proportional to the pressure exerted by the body, providing the most precise support possible. This is all the more important because sleeping positions can vary with infinite nuances, ranging from supine to prone, and particularly including the most common fetal-style lateral position, which is especially critical when evaluating a mattress’s comfort. In fact, it is in the lateral position that the mattress must deform the most to allow the shoulder area to sink into the support sufficiently to ensure that the anatomical curves of the spine, as shown in the figure, are properly supported.With regard to this objective, which is strictly related to anatomy, it can be demonstrated that the use of natural latex foam (a natural elastomer) with a precise response and maximum elastic capacity (an elastic modulus approximated as a constant (K) at least within the range of stresses applied by the body, i.e., approximately between 1 and 10 g/cm²) is the best possible solution for the required performance. An elastomer is defined as a material capable of undergoing significant deformation under the action of relatively small forces and of rapidly recovering its original shape and dimensions as soon as the force is removed. Natural latex is the elastomeric material par excellence. In the laboratory, stress-strain hysteresis curves can be reconstructed, showing the material’s deformation followed by release and return to its initial position, which highlight the astonishing elastic capacity of vulcanized natural latex.
These tests clearly show that, with respect to the required property (deformation proportional to the force exerted by each individual infinitesimal area of the body), natural latex, within the scope of application required for a mattress, exhibits the proportional behavior most similar to Hooke’s ideal law; not only that, but it is also the only material that does not exhibit inflections (changes in the concavity of the curve) within the performance range; furthermore, it is the material that largely exhibits theless energy loss between the supply (loading) and return (unloading) And since the energy dissipated—corresponding to the area between the two forward and return curves—is essentially converted into heat, one can appreciate the importance of performance from the perspective of the microclimate during rest as well.
We would like to take this opportunity to explain why Kipli focuses its attention on the mattress and pillow system: because, unlike traditional manufacturers and their stores, we know full well thata pure natural latex mattresswiththe thickness and density engineered by Kipli is capable of delivering excellent performance in terms of force/deformation, as well as—as we will see—microclimate, hygiene, environmental safety, breathability, and hypoallergenicity, regardless of the type of support structure(slatted frame, bed, box spring) to which it may be attached—a structure that, if necessary, can be limited to the sole function of adjusting the head and foot sections.
This observation stems from the “zero-budget” design approach followed by our engineers, who first identified the required performance and then evaluated the available materials to provide maximum value to the user while avoiding duplication of functions between the support structure and the mattress.