Office Chair Sitting Posture Reference

The correct sitting posture on an office chair requires adjustments in multiple aspects such as seat height, sitting angle, arm support, and monitor height, while also avoiding poor postures and taking regular breaks for movement.

• Seat Height Adjustment: The appropriate seat height is the foundation of correct sitting posture. 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, causing the feet to dangle, a footrest can be used to support the feet; if the chair is too low, the pressure on the knee joints will increase, which may lead to knee joint problems over time.
• Sitting Angle: Lean back slightly, at an angle of about 100 to 110 degrees, allowing the entire back, especially the lower back, to fit snugly against the chair back. If the chair is equipped with a lumbar support, adjust it to the point that precisely supports the natural curve of the lumbar spine, which can effectively reduce lower back pressure and prevent lower back diseases.
• Arm Support: The adjustment of armrest height is crucial. Adjust it so that when the elbows hang naturally, the forearms can rest easily on the armrests or the desktop, with the angle between the upper arms and forearms close to 100 degrees. This can prevent the arms from hanging in the air or being overly bent, reducing fatigue in the arms and shoulders.
• Monitor Height: Elevate the monitor so that the line of sight can look straight at the top edge of the screen. Avoid unconsciously leaning forward, as leaning forward can instantly increase the pressure on the neck by three to five times, and maintaining this posture for a long time can easily lead to neck diseases.
• Avoiding Poor Postures: Avoid poor postures such as keeping the legs together, slouching, shrugging the shoulders, or tilting the head forward. These postures can increase the burden on the spine, affect its normal physiological curvature, and thus lead to spine-related diseases.
• Regular Movement: Every 30 minutes, perform some simple stretching exercises. For example, hip joint stretching: sit on the edge of the chair, spread your feet apart, cross one ankle over the opposite knee, and then slowly lean your back forward and downward; lower back release: turn to the side, hold the chair back with your hand, and gently twist your body towards the chair back; shoulder opening exercises: sit up straight, raise one arm over your head and tilt it to the opposite side, or hold the back of the chair with both hands behind you. These exercises can relieve physical fatigue and prevent muscle strain.