Back Soreness in Pregnant Women Using Office Chairs

Back soreness in pregnant women while working at an office chair is mainly related to lack of support, postural compensation, prolonged sitting, and inappropriate chair height. It can be alleviated by adjusting sitting posture, taking regular breaks, using assistive tools, and adjusting chair height.

During pregnancy, the body's center of gravity shifts forward, causing the spine to compensate and doubling the pressure on the lumbar region. Hormonal changes soften the ligaments and reduce stability. Additionally, continuous tension in the back muscles due to prolonged sitting can easily trigger soreness. Maintaining the same sitting posture for a long time keeps the腰部 (waist) muscles under continuous stress without relaxation, leading to fatigue and soreness. An inappropriate chair height affects the distribution of the body's center of gravity, causing the waist to bear uneven pressure and increasing the risk of muscle strain.

The following are specific relief measures:

• Adjust sitting posture: Ensure the chair provides good lumbar support, keep your feet flat on the ground, and have your knees roughly parallel to your hips. Consciously perform pelvic retroversion exercises, that is, tighten your abdomen and gently press your lower back against the chair back to correct poor posture and relieve muscle fatigue. A good sitting posture can reduce lumbar pressure and avoid excessive muscle tension caused by improper posture.
• Take regular breaks: Get up and move around for 3 - 5 minutes every 45 minutes to 1 hour. You can take a short walk in the office, twist your waist, and stretch your legs to promote blood circulation in the waist and relieve muscle tension. Taking regular breaks breaks the state of maintaining the same sitting posture for a long time and allows the waist muscles to relax and recover.
• Use assistive tools: Use ergonomic cushions or lumbar-supporting sitting chairs to support the waist and reduce lumbar pressure. These assistive tools can provide additional support, help maintain the correct sitting posture, and reduce the burden on the waist muscles.
• Adjust chair height: Adjust the chair height in a timely manner according to your height and physical changes during pregnancy. When sitting down, your feet should be able to rest naturally on the ground, with your knees and hip joints at the same level and your thighs parallel to the ground. If the chair cannot be adjusted in height, use a footrest or height-increasing pad. At the same time, the chair back should support the waist, and the angle is preferably between 100° and 110° to provide good support for the waist. An appropriate chair height and backrest angle can ensure a reasonable distribution of the body's center of gravity and reduce waist pressure.