> You recommend using « synchronised » chairs. Can you tell us what they are exactly?
A synchronised chair is a chair equipped with a mechanism thanks to which both seat and backrest follow the user’s movements simultaneously with a given angle, so as to provide a permanent support in both rear and front positions.
Angles often are around two to one ratios, that is to say that when the seat tilts or goes forward by 20% for example, the seat will change by 10°. These sophisticated mechanisms have become very popular and consequently the price of these chairs is getting more and more competitive, but the word is often tarnished, so be careful with the product you’re going to buy!
To be efficient, a synchronised chair must include a personalised adjustment of the tension, (you can check its real efficiency according to your weight) and the mechanism must be left free, in movement so that the chair can follow your movements. At the beginning you might believe it is not very comfortable, but if you force yourself to use it this way during one week, afterwards the mechanism will only lock exceptionally, and you won’t suffer from back pain any more at work.
