Lower back pain is one of the most common complaints among professionals who spend long hours sitting at a desk. Yet, better posture can transform your workday. Here's how.

What is lower back pain and why is it so common?

Lower back pain occurs in the lower back, in the region called the lumbar region. It can be caused by poor posture, lack of physical activity, unsuitable seating, or a combination of these factors. When you sit for long periods of time, your back muscles weaken, putting additional strain on your spine.

How to adopt good sitting posture?

1. Feet firmly planted on the ground : Avoid crossing your legs. Keep your feet parallel and firmly anchored to the ground. This stabilizes your pelvis and prevents twisting.

2. Knees at 90 degrees : Your knees should be at the same height as your hips. Adjust the height of your chair if necessary.

3. Straight back with lumbar support : Use a lumbar pillow or rolled towel placed across your lower back to maintain the natural curvature of your spine.

4. Relaxed shoulders : Relax your shoulders and keep your arms close to your body. Your forearms should rest comfortably on the desk, forming a right angle.

5. Head Alignment : The screen should be at eye level. This prevents you from tilting your head forward, which creates tension.

Recommended sitting postures to relieve lower back pain

1. Classic ergonomic sitting posture

The easiest to adopt in the office. It meets all the above points and relies on a well-adjusted chair with armrests, lumbar support, and an appropriate height.

2. Dynamic posture on a Swiss ball

Sitting on an exercise ball works the deep muscles of your back and abdominals. This encourages you to naturally straighten up, but be careful not to sit on it for more than 30 minutes without a break.

3. Cross-legged posture (on the floor or on a cushion)

If you're working from home, sitting cross-legged on the floor with your back straight can be a good alternative. This position opens the hips and promotes good alignment.

4. Kneeling chair

Forward-leaning chairs with knee support help keep your back straight and relieve pressure on your spine. They require some adjustment.

5. Semi-reclined position (reclined)

A slight backward angle, with good lumbar support, can relax the lower back. Ideal for less demanding tasks (reading, video conferencing).

The golden rules: vary and move

No matter what your posture, staying still for too long is harmful. Change your position every 30 minutes. Stand up, walk around, stretch. Movement is your best friend against pain.

Simple exercises to strengthen your back

Here are three quick moves to incorporate into your day:

• Pelvic tilt : Sitting, contract your abs and gently tilt your pelvis forward and then backward.

• Back Stretch : Standing with hands on hips, gently lean back while looking at the ceiling.

• Cat-cow : On your hands and knees, alternate between round and hollow backs to mobilize the spine.

Conclusion: Better posture, better comfort

Adopting correct posture and regularly varying your positions can provide lasting relief from lower back pain. Add to this a few simple stretches and movements, and you'll have everything you need to work comfortably, even for long hours sitting down.