Office Chair Too High

An excessively high office chair can prevent your feet from touching the ground steadily, leading to knee joint problems. It needs to be adjusted according to your height or solved by using a footstool.

I. Hazards of an Excessively High Office Chair

According to ergonomics, when sitting, your feet should rest flat on the ground, and your thighs and calves should be perpendicular to each other, which is the most comfortable office posture. If the chair is too high and your feet cannot touch the ground, your knee joints will be in a "semi-flexed suspended state" for a long time. This posture can cause the muscles on the front of your thighs to gradually atrophy due to a long-term lack of effective contraction, while the ligaments become loose due to continuous stretching, leading to an imbalance in the forces acting on your knee joints. Over time, the stability of your knee joints will continue to decline, increasing the risk of chronic injuries. Data shows that among people who work for 8 hours a day with a chair that is too high and their feet suspended in the air, the incidence of decreased knee joint stability is as high as 42%, with 30 - 45-year-old office workers accounting for 35% of those suffering from chronic knee pain due to improper sitting postures.

II. Methods for Adjusting the Height of an Office Chair

1. Adjust the height according to your height
Different heights correspond to different ideal chair height ranges: those who are 160 centimeters tall are recommended to adjust the chair to 42 - 43 centimeters; those who are 165 centimeters tall are suitable for 43 - 45 centimeters; and those who are 170 centimeters tall are best adjusted to 45 - 47 centimeters. When adjusting, ensure that your feet can rest flat on the ground after sitting down, with your thighs and calves forming a 90-degree angle and your back naturally fitting against the chair back.

2. Operate the adjustment device
Most office chairs are equipped with hand-operated control devices, usually located under the seat or on the side. You can adjust the height by pulling up the control lever or turning the knob. During the adjustment process, maintain a sitting posture and slowly raise or lower the chair to a comfortable position. If the chair has armrests, you can adjust the height of the armrests simultaneously so that your arms hang naturally and your elbows form a 90-degree angle, reducing shoulder and neck strain.

III. Alternative Solutions When Adjustment is Not Possible

If the chair height is fixed and too high, you can prepare a footstool. The height of the footstool should be selected according to the height difference between the chair and the ground, ensuring that your knees can still be kept slightly bent (about 5 - 10 degrees) after your feet are placed flat on it. The footstool should be placed under the desk to avoid affecting the space for leg movement. In addition, you can change your sitting posture regularly (such as standing and working briefly) to distribute the pressure on your knee joints and reduce the risk of chronic injuries.