Back Pain from Office Chair

Prolonged sitting on an office chair and experiencing back pain may be related to diseases such as lumbar muscle strain, lumbar disc herniation, ankylosing spondylitis, osteoporosis, or scoliosis. It may also be caused by factors such as poor sitting posture, insufficient core muscle strength, degenerative changes in the spine, or an inappropriate office chair.

Common Causes and Mechanisms
Lumbar muscle strain is one of the main causes of back pain from prolonged sitting. Maintaining a fixed sitting posture for a long time, especially with a hunched back, can lead to continuous tension and spasm in the lumbar muscles and fascia. The accumulation of local metabolic products such as lactic acid can trigger aseptic inflammation, manifesting as soreness and pain in the lateral or central regions of the waist. The pain worsens after prolonged sitting and may slightly improve after activity. Lumbar disc herniation occurs because prolonged sitting increases the pressure on the intervertebral discs, causing the nucleus pulposus to protrude and compress the nerve roots, leading to radiating pain that may be accompanied by lower limb numbness. Ankylosing spondylitis is more common in young men and is associated with genetic and immune abnormalities. It is characterized by morning stiffness or stiffness after prolonged sitting in the lower back, which improves after activity. In patients with osteoporosis, bone density decreases, and the spine's load-bearing capacity declines during prolonged sitting, making it prone to pain. Scoliosis can disrupt the mechanical balance of the spine, causing excessive traction on the unilateral muscles and leading to pain.

Factors Related to Office Chairs
An inappropriate chair height is a common trigger. If the chair is too high, the shoulders need to be shrugged to maintain the posture, causing tension in the shoulder and back muscles. If the chair is too low, the backrest may be suspended, and the waist loses support, increasing the pressure on the lumbar spine. In addition, a chair lacking lumbar support or with a hard material can force the spine into an unnatural curvature, and long-term use may induce or aggravate pain.

Prevention and Relief Measures

1. Adjust Sitting Posture and Chair: Choose an ergonomic chair to ensure good lumbar support and maintain the natural curvature of the spine. Adjust the chair height so that the feet are flat on the ground and the knees are at the same height as the hip joints.
2. Take Regular Breaks: Get up and move around for 5 to 10 minutes every 30 to 45 minutes of sitting. Perform simple stretching exercises (such as standing backward bends and lateral waist bends) to promote blood circulation and relieve muscle tension.
3. Strengthen Core Muscles: Enhance the strength of the waist and abdominal muscles through exercises such as planks and bridge exercises to reduce the burden on the spine.
4. Seek Medical Attention Promptly: If the pain continues to worsen or is accompanied by symptoms such as lower limb numbness or fever, seek medical attention promptly to rule out diseases such as lumbar disc herniation and ankylosing spondylitis.