We all know what it's like: a cosy evening at home or with friends, but although the mood is good and the atmosphere pleasant, we just can't relax and we keep on fidgeting. We just don't feel right, and we often even get backache. Long evenings spent in front of the TV (statistics indicate that we spend 3 to 4 hours in front of the TV every day) become torture. It's not necessarily the programme that's at fault but unsuitable upholstered furniture, developed with an eye to design rather than ergonomic aspects and functionality.
Functional upholstered furniture fulfils both comfort-related and ergonomic requirements. Unfortunately, the seat height and depth of three-piece suites can't always be adjusted to individual requirements, in contrast to reclining chairs or television chairs designed to sit on for long periods. Which without dispute would be the ideal solution. Even so, there is a series of products where the couch and armchairs can be selected and combined with different seat heights and depths. This then permits back-friendly sitting also in the living room. So if there are people of different sizes living in the household, it is possible to take everyone into consideration by appropriate combinations of different seat dimensions.
When sitting upright, your feet should rest comfortably on the floor, with the thighs and calves at an angle of approx. 90 degrees. When you're sitting, make sure that the front edge of the seat does not press against the back of your knees. Instead, it's better to allow for a gap at this point rather than having the calves being pressurised by the edge of the seat, which can cause unpleasant pressure after only a short period. This could also hinder the circulatory system which would soon make itself known by a tingling sensation in your calves or feet. A backrest that goes right up to the shoulders gives your back good support. The lumbar spine should preferably be supported by an adjustable lumbar or pelvic crest support or by special padding and a spine-friendly design of the backrest.
A lying function is not necessary for every seat but advisable for every person who uses the furniture frequently. It should be possible to integrate this kind of function on request. Here again, it is important to be able to make individual adjustments to the upper end of the backrest. Furthermore, a couch is far more frequently used for relaxation in a supine position than a pure armchair. Different seat hardness settings are also ideal for satisfying subjective sitting comfort. Caution: "Firm or soft" padding certainly does not primarily indicate correct sitting. Even where good armchairs and couches are concerned, the principle still applies: keep moving to change the load! So don't stay sitting down for too long: instead, use the next set of TV adverts as a welcome opportunity for a little exercise.
Poor sitting posture places an added burden on the spine
Design and ergonomics