Office Chair Posture

The correct posture for an office chair requires comprehensive adjustments in terms of seat height, sitting angle, lumbar support adjustment, armrest height, and monitor height, while also considering different types of office postures and paying attention to regular movement.

Seat Height: Adjusting the seat height is crucial. Ensure that both feet can rest flat on the ground, with the angle between the thighs and lower legs maintained between 95 and 100 degrees. If the chair is too high and the feet are suspended, it can impede blood circulation in the legs and affect balance. Conversely, if the chair is too low, it increases pressure on the knee joints, potentially leading to knee pain over time. If the chair height cannot meet the requirements, a footrest can be used for assistance.

Sitting Angle: Lean back slightly, with an angle of approximately 100 to 110 degrees. This posture effectively reduces pressure on the lumbar spine. The key is to ensure that the entire back, especially the lower back, is in contact with the chair back, keeping the spine in its natural physiological curve and avoiding a hollow lower back.

Lumbar Support Adjustment: Many chairs come with lumbar support. Adjust it to the point where it precisely supports the natural curve of the lumbar spine. When properly adjusted, you should feel your lower back being steadily supported, rather than being rigidly pressed against. This provides good support for the lower back and reduces the burden on the lumbar muscles.

Armrest Height: Adjust the height of the armrests so that when your elbows hang naturally, your forearms can rest easily on the armrests or desktop, with the angle between the upper and lower arms close to 100 degrees. The appropriate armrest height prevents the arms from hanging in the air, reducing fatigue in the shoulders and arms.

Monitor Height: Elevate the monitor so that your line of sight is level with the top edge of the screen. This forces the spine to stretch naturally and prevents unconscious forward leaning. Leaning forward increases the pressure on the neck by three to five times instantly, and maintaining this posture for a long time can easily lead to cervical spondylosis.

Other Correct Sitting Postures: The upright sitting posture requires coordination with an ergonomic chair, height-adjustable desk, and monitor stand. After adjustment, the chair should provide comfortable support for the neck, back, and waist. The reclined sitting posture requires the coordination of a leg rest, height-adjustable desk, and monitor stand. The standing posture allows for easy switching between standing and sitting. The saddle-sitting posture, which is between sitting and standing, keeps the spine upright and can be used with a height-adjustable desk or workbench.

In addition, no matter how perfect a static posture is, it cannot withstand the passage of time. It is advisable to move every 30 minutes, such as trying hip stretches, lower back releases, and shoulder-opening exercises, to relieve physical fatigue.