Using a footrest is a good way to maintain a neutral position.
In the sitting position, your feet should be in contact with the ground. If your chair is at the right height, meaning your feet touch the ground and your knees are bent at 90 degrees, then you probably don’t need a footrest.
If your chair is not adjustable and your feet don’t touch the ground, you should use a footrest to adjust your position. If the chair is too high, use a footrest to make sure that your knees are bent to 90 degrees. The footrest must offer good support to the sole of the feet.
It is known that a prolonged sitting position increases swelling in the lower extremities. A dynamic tiltable footrest is an interesting item to use if you suffer from poor blood circulation. The use of a dynamic footrest allows for mobilizing of the ankle joint, activating the vein pump and then helping to reduce leg swelling.