Office Chair Adjustment
The adjustment of an office chair can be carried out in terms of seat height, sitting posture angle, armrest height, etc. At the same time, some usage details need to be noted to ensure health.
Seat Height Adjustment: Look for the hand control device. Pull up the corresponding control lever or turn the knob to adjust the height. For some pneumatic models, repeatedly push the lever up and down to raise or lower the seat. When adjusting, ensure that both feet can rest flat on the ground, and the angle between the thighs and calves is maintained between 95 and 100 degrees. If the chair is too high and causes the feet to hang in the air, a footrest can be used; if the chair is too low, it will increase the pressure on the knee joints. When operating a computer, keep your eyes level with the monitor, which can be achieved by adjusting the seat height. When working at a desk, keep your elbows at desk height. When sitting for a long time, make sure your feet are flat on the floor. If adjusting from a standing position, when the front of the chair is just below the knees, you can sit down comfortably.
Sitting Posture Angle Adjustment: Lean back slightly, with an angle of about 100 to 110 degrees, which can effectively reduce lumbar spine pressure. Let the entire back, especially the waist, fit against the backrest. If the chair has a lumbar support, adjust the lumbar support to the point that exactly supports the natural curve of the lumbar spine.
Armrest Height Adjustment: Adjust it so that when the elbows hang naturally, the forearms can rest easily on the armrests or the desktop, and the angle between the upper arms and forearms is close to 100 degrees. If arm support is not required, the armrests can be removed or lowered to prevent them from obstructing the knees from sliding under the desk.
Other Adjustments and Precautions: Elevate the monitor so that your line of sight is level with the top edge of the screen, avoiding the unconscious forward leaning that increases neck pressure. Even the most perfect static posture needs to be changed regularly. Every 30 minutes, you can perform some simple exercises, such as hip joint stretching, lower back release, and shoulder-opening training. Change your sitting posture every 15 - 30 minutes, such as briefly leaning forward and then returning to an upright position, or slightly changing the weight distribution on the chair.
