How to sit correctly and active!
To sit active, choose a chair with a dynamic function or an activating function that triggers you and gives you the possibility to avoid a static sitting position during long periods, as dynamic and activating chairs tend to facilitate movements in static desk-based offices (Colenberg et al., 2021). In this case Float/3D mechanisms or, when no lateral movement is desired, synchro and single point tilt mechanisms can be used.
A higher (open) sitting position, with an angle of more than 90° between torso and thighs will help you to sit straight, move body weight to your thighs and activate the muscles of your legs (Mandal, 1987, Annetts et al., 2012). In this case the depth of your seat should be reduced, or a saddle chair should be chosen to prevent the front edge of the seat of pressing into your thighs while still giving you the necessary support. Furthermore, make sure that you change your working posture regularly “as the best posture, is the next posture”.
Especially, if you want to sit well-supported (often less active) for a certain period, take care that you sit on the very back of your seat and make use of the backrest. Take care that the backrest and lumber support are adjusted in a way that your back is well supported, as this helps you to keep a more neutral position (Cho et al., 2015). Always make sure that you do not hunch forward for a longer period, as such a posture compresses the spinal cord and exerts tremendous pressure on your back (Nachmenson and Elfstrom 1970, Wilke et al. 1999).