The ideal sitting position is to keep your knees slightly higher than your hips and with your feet firmly on the floor, according to Work Area.
If you cannot rest your feet flat on the floor when a suitable chair height has been selected, it is important that a footrest is used in order that a comfortable posture can be obtained, claims lab seating specialist Work Area.
The foot ring of a high level laboratory chair or draughtsman chair should not be used to rest your feet on. Doing so can restrict the flow of blood to the lower leg.
Laboratory workers may choose to consider using a foot rest if their feet cannot be flat on the ground - resulting in the need to raise the chair to work effectively.
According to Work Area, utilising a footrest will change your hip angle and put your back closer to the chair backrest; allow a user to change their feet position during the day and improve blood circulation to the legs.
Variations in posture allow muscular relaxation to occur and can be achieved by altering the distance of the footrest from the user by adjusting the height of the footrest surface.
If a user has to maintain a fixed position for a period of time, it is important that the footrest height can be changed easily while working.