Spending long hours at a desk can contribute to a rounded back, forward-head posture, and lower back pain. You may notice stiffness or heaviness in your lower back, or pain when standing up after sitting for a long time.

Two main factors can make desk-related lower back pain more likely: the pressure sitting places on the lower back and the lack of movement when you remain in the same position for too long.

Sitting can place more stress on the lower back than standing, particularly when you stay seated for long periods.

One study cited in the source reports that when the load on the intervertebral discs while standing is treated as 100%, the load while sitting may reach approximately 140%. This comparison helps explain why sitting all day can place a considerable burden on the lower back.

Lower back pain may become worse when you focus on desk work without changing position for a long time. Remaining seated reduces opportunities to move the muscles around the lower back and buttocks.

Prolonged sitting may also reduce circulation. As fatigue builds up, the muscles around the lower back can become stiff, making pain and discomfort more likely to worsen.

Lower back pain can make it difficult to concentrate and work comfortably. The following simple habits may help reduce the strain caused by prolonged sitting.

Desk work often requires long periods of sitting, but it is important to stand up regularly instead of holding the same posture for hours.

Try to stand or gently bend and straighten your knees once every 30 to 40 minutes. Regular movement can help prevent the muscles around the lower back and buttocks from becoming too stiff.

The muscles around the lower back and buttocks can become tight during desk work. Gentle stretching may help loosen these areas and reduce tension.

Your sitting posture and chair setup can affect how much strain is placed on your lower back. To help prevent pain from prolonged sitting, aim for a stable position that supports your pelvis and upper body.

Sit with your pelvis upright and your spine comfortably lengthened. Try to distribute your weight evenly across the sitting bones at the base of your pelvis.

Avoid letting your pelvis roll backward, as this can encourage slouching and place more strain on the lower back. If you tend to arch your lower back excessively, adjust your position gradually until you find a posture that feels stable rather than forced.

Try not to collapse into the backrest while sitting. Position your desk and chair so that your elbows remain at approximately a 90-degree angle while you work.

This setup can make it easier to keep your upper body upright and reduce unnecessary strain on the lower back.

Because sitting places considerable stress on the lower back, adjusting the chair so that your posture is closer to a natural standing alignment may help reduce the load.

Set the chair height so that your hips are positioned slightly higher than your knees.

Some people lower their chair so that both feet can reach the floor, but a chair that is too low may place additional strain on the lower back.

As a general guide, adjust the chair so that your knees form an angle of approximately 90 degrees. The most comfortable height varies from person to person, so fine-tune the chair until your lower back feels supported.

When concentrating on desk work, it is easy to lean toward the screen without noticing. This forward-leaning posture can create uneven strain through the body and may contribute to forward-head posture and lower back pain.

If the abdominal muscles are weak compared with the back muscles, the upper body may tip forward and the lower back may compensate by arching.

Avoid stretching your legs too far in front of the chair, as this can increase pressure around the buttocks and lower back.

Keep your feet closer to the chair and roughly beneath your knees so that your lower body remains stable while you work.

A seat cushion may help support your pelvis and discourage a forward-leaning posture. Place the cushion directly beneath your pelvis rather than under your thighs.

This can make it easier to support your upper body and reduce the load placed on the lower back and buttocks.

If your chair has armrests, adjust them so that your elbows are supported naturally while you work.

Try to keep your upper body aligned over the chair rather than reaching far in front of the armrests.

When you become absorbed in desk work, it is easy to sit for too long or gradually lean toward the screen without noticing.

Improving your desk posture, adjusting your chair, and taking regular movement breaks may help prevent lower back pain, slouching, and forward-head posture.

Use the tips in this article to create a more comfortable workspace and reduce the strain caused by sitting all day.

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Source reference in the original article: Japan Clinical Orthopaedic Association, “Lower Back Pain.”

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