Correct Posture Office Chair
To maintain proper posture using an office chair, pay attention to the following key points:
1. Seat Height Adjustment Adjust the seat height so that your feet are completely flat on the ground, with your thighs and lower legs forming a 95-100 degree angle, or your thighs parallel to the ground and your knees bent at 90 degrees. If the chair is too high and your feet are dangling, use a footrest for support; if the chair is too low, it will significantly increase the pressure on your knees, potentially leading to joint pain over time.
2. Lumbar Support Optimization Choose a chair with an adjustable lumbar support and adjust it to support the natural curve of your lumbar spine (between the third and fifth lumbar vertebrae), with a thickness that maintains a slight forward curve in your lower back. For those who work at a desk for long periods, an ergonomic chair is recommended, as its curved design effectively disperses lumbar pressure and reduces the risk of lower back muscle strain from prolonged sitting.
3. Seating Angle Control Maintain a slight recline of 100-110 degrees, ensuring that your back, especially your lower back, is in contact with the chair back to avoid leaning forward or backward. When sitting, your buttocks should be fully in contact with the seat surface to ensure even distribution of your body weight and reduce localized pressure.
4. Arm Support Adjustment The height of the armrests should match the height of your elbows when they are naturally hanging down, allowing your forearms to rest comfortably on the armrests or desktop, with your upper and lower arms forming an angle close to 100 degrees. If using an ergonomic chair, prioritize one with rotatable armrests to ensure your arms are supported even when close to the desk, preventing excessive tension in your shoulder and neck muscles.
5. Monitor Height Alignment Elevate the monitor so that your line of sight is level with the top edge of the screen, or have the top of the computer screen at or slightly below eye level (10-15 cm lower), with a distance of 50-70 cm maintained. Laptop users are advised to use a stand to elevate the screen and connect an external keyboard to avoid increasing cervical spine pressure from looking down or leaning forward.
6. Regular Movement and Supportive Measures Get up and move for 1-2 minutes every 30-40 minutes, performing micro-movements such as hip stretches and lower back releases; even without leaving your seat, you can relieve muscle tension through stretching. Additionally, choosing ergonomic devices such as a split keyboard and vertical mouse, combined with core muscle training three times a week, can further enhance spinal stability and prevent occupational musculoskeletal disorders.
