Back Pain Caused by an Office Chair That's Too High

Back pain caused by an office chair that's too high can be alleviated by precisely adjusting the chair height, properly setting the lumbar support, and adopting back-protecting habits.

Precisely Adjusting the Chair Height

• Three-Step Calibration Method: First, find a reference point. After sitting down, let your elbows hang naturally, with the elbow joints at a 90 - 110° angle. The desktop should be slightly lower than the height of the elbow joints. Then, adjust the height. Turn the lifting lever clockwise to raise the chair and counterclockwise to lower it until the soles of your feet are completely flat on the ground, your knees are bent at 90°, and your thighs are parallel to the ground. Finally, test the stability. You should be able to step firmly on the ground without tiptoeing or having your feet悬空 (in mid-air). You should be able to get up without using external force, which indicates the appropriate height.
• Handling Special Situations: If your height is insufficient and your feet are悬空 (in mid-air), don't cross your legs. Use a footrest that is 10 - 15 cm high to keep your feet flat. If the chair height is not adjustable, place a wooden board under the seat to raise your hips and use a footrest to level it up. After correctly adjusting the chair height, the pressure on the lumbar spine can be reduced by 30%.
• Other Key Points: After sitting down, adjust the lifting lever so that your knees and hips are basically level or slightly lower. Your thighs should be exactly parallel to the ground, and the soles of your feet should be firmly and steadily placed on the ground without tiptoeing or bending your knees and hooking your feet. Adjust the height in coordination with the desk. The height difference between the desk and the chair should be in the golden range of 28 to 30 cm. When your arms hang naturally and your elbows are placed flat on the desktop, your shoulders and neck don't need to shrug or raise your arms.

Properly Setting the Lumbar Support

• Core Criteria for Adjusting the Lumbar Support: In terms of position, the lumbar support should be aligned with the lumbar dimples, which are 3 - 5 cm above the belt line, that is, the position pressed by your thumbs when you place your hands on your hips. In terms of force, adjust it until it can support your waist without being too tight. It is best if the lumbar support can automatically push forward by 2 cm when you lean forward to type and remain in close contact when you lean back.
• Adjustment Methods for Different Chairs: For chairs with adjustable lumbar support, first raise the height to align with the lumbar dimples and then adjust the front-back tightness to ensure a close fit during dynamic postures. For chairs with fixed lumbar support, place a 5 cm thick supportive cushion to fill the gap in the waist. For chairs without lumbar support, find a rolled-up towel and fix it in the corresponding position with tape as a temporary substitute for the lumbar support. For those who have adjusted the lumbar support correctly, the incidence of back pain will decrease by 67% after three months.

Adopting Back-Protecting Habits

Get up regularly. Every 45 minutes of sitting, get up and move around for 3 minutes. Do 15 twisting movements to activate the core muscles. Check the desktop height. After adjusting the chair height, the desktop should be level with your elbow joints to avoid lowering your head or extending your arms and reduce lumbar compensation. Choose the right chair. If you have a limited budget, you can choose a basic model with a 4D lumbar support. Even if the chair is adjusted to the standard, you should still get up and move around appropriately, such as getting up to pour a glass of water and wandering around for 2 minutes.