The Height of Office Chairs in Companies is Too High

If the office chairs in companies are too high, it can be resolved by adjusting the chair height or using auxiliary tools, while also paying attention to the potential harm that excessively high chairs can cause to the knees.

I. Methods for Adjusting Chair Height

1. Locate the Hand Controls
   If the chair is equipped with height adjustment functionality, it can be adjusted by operating the hand control lever or knob. The specific operation depends on the chair model:

• Lever-type: For some chairs, you need to pull the lever upward to raise the seat and press it downward to lower the height;
• Knob-type: Turning the knob allows for gradual height adjustment;
• Pneumatic-type: Repeatedly pushing the lever up and down (pumping) achieves lifting and lowering.
  When adjusting, operate gently, controlling each movement within a few centimeters to avoid imbalance caused by rapid lifting and lowering. If you are unsure about the function of the control lever, consult the user manual or try each one individually, and return the lever to its original position after adjustment.

2. Adjust from a Standing Position
   If it is difficult to operate while sitting, you can stand beside the chair to adjust the height. The standard is that the front end of the chair should be just below the knees. When sitting down, your feet should be able to rest flat on the ground, and your thighs should be roughly parallel to the ground. This posture ensures a stable center of gravity and reduces fatigue from prolonged sitting.

II. Using Auxiliary Tools

If the chair height cannot be adjusted or is still not suitable after adjustment, a footstool can be used to make up for the height difference. Choose a stable footstool with an appropriate height and place it under the desk. Rest your feet flat on the footstool, keeping your knees naturally bent (about 90 degrees) to avoid a hanging position.

III. Health Risks of Excessively High Chairs

Having your feet hang in the air due to an excessively high chair can cause knee problems:

• Muscle and Ligament Injuries: When the knees are in a "semi-flexed hanging position" for a long time, the muscles in the front of the thighs atrophy and the ligaments become loose, leading to an imbalance in force distribution;
• Decreased Stability: Data shows that among people who work 8 hours a day with excessively high chairs, the incidence of decreased knee stability reaches 42%. Among office workers aged 30-45, 35% of chronic knee pain is related to improper sitting posture;
• Risk of Irreversible Damage: Long-term hanging can cause knee pain, weakness when going up and down stairs, and may even lead to structural damage to the joints.

IV. Benefits of Correct Sitting Posture

After adjusting the seat height so that your feet rest naturally on the ground, you can simultaneously improve your overall sitting posture:

• Straight Back: Reduces pressure on the lumbar spine and prevents hunchback;
• Relaxed Shoulders and Neck: Keep your line of sight level with the top edge of the screen to avoid stretching your neck forward;
• Comfortable Arms: Keep your elbows bent at about 90 degrees to reduce shoulder and neck fatigue.

By scientifically adjusting the seat height or using auxiliary tools, you can effectively reduce the health risks associated with prolonged sitting and improve work efficiency.