Adjustable office chairs have a lot to deal with. If we were all the same size, shape and proportions then there truly would be one chair choice that could suit every person. Of course that’s never going to happen. Putting aside the subjective choice of style, design or aesthetics, office chairs that fit the official European Norms are increasingly seen as representing a diminishing percentage of the normal distribution of individuals. There are many reasons for this. Here are just a few:
In a recent American study it was concluded that the average height of the males in the study was 150mm taller than the average height of the females. However, the location of the lumbar support was statistically identical – justification for the manufacturer to conclude that a well-placed lumbar support did not need to be height-adjustable by more than 50mm.
This proved that the average height of the lumbar for all individuals was at the same height. However, by simple abstraction, a lady of 5’ 8” high (significantly above average height) would statistically almost always have the need for a lumbar support at a higher place than a man of the same height. Call us if you want to know why.
In recent UK Government statistics there is a statement that there are now 2 million more people aged over 50 years working than was the case just ten years ago; a significant proportion of this generation in work are engaged in sedentary office jobs. As the body ages the musculo-skeletal system changes shape and performance; the incidences of long-term back injuries, spinal deformities and body-shape metamorphosis increases. Call us if you want to know more.
Individuals do not possess proportionate limbs that vary in relation to height; they have a personal combination of size and shape of physical features that interface with a chair when you sit down. Some people have longer backs, or longer legs. Some people have larger Body Volume at the rear which extends the popliteal (buttock to behind knee) length, raises the height of the lumbar support, or increases the depth of the lumbar curve. Call us if you want to know how to help someone who is not of average proportions.
For more information, check out our website on http://www.humanfactorseating.co.uk/ergonomic-seating/ergosomatonomics-shape-not-size/