Lower Back Pain and Desk Posture: Is Sitting Really the Problem?

Written by: Dr. Richard Domenic Simeoni

If you spend most of your day sitting at a desk and regularly finish work with a stiff or aching lower back, it’s easy to assume your posture is the problem.

You might have been told to sit up straighter, pull your shoulders back or invest in a better ergonomic chair. While your workstation can certainly make a difference, the relationship between desk posture and lower back pain is usually a little more complicated.

Often, it’s less about finding the perfect posture and more about how long you stay in one position.

There Isn't One "Perfect" Sitting Posture

For years, people with back pain were often told that poor posture was the main cause of their symptoms.

In reality, your back is designed to move and tolerate a range of positions. Sitting slightly slouched for part of the day isn't automatically harmful, just as sitting perfectly upright doesn't guarantee you won't develop back pain.

The bigger issue is often staying in the same position for several hours at a time.

You may start the morning feeling comfortable, but as the day goes on, muscles fatigue, joints remain relatively static and your back can become increasingly stiff or sensitive.

Changing position regularly is usually more useful than trying to maintain one "correct" posture all day.

Why Does My Back Hurt More After Sitting?

Long periods of sitting can aggravate lower back pain for several reasons.

For some people, prolonged sitting places more sustained load through structures in the lower back. Others may simply become stiff after being relatively inactive for several hours.

Your symptoms may also be influenced by:

• Reduced general activity during the working day

• Weakness or reduced endurance through the trunk, hips and legs

• A sudden increase in sitting compared with your usual routine

• Previous episodes of lower back pain

• Stress, poor sleep or fatigue

• A workstation that keeps you in an uncomfortable position for extended periods

This is why two people can sit at very similar desks and have completely different experiences with back pain.

Small Changes During the Day Can Help

If sitting aggravates your back, you don't necessarily need an expensive standing desk or ergonomic overhaul.

Start with movement.

Try standing up regularly, walking around for a couple of minutes, changing your sitting position or completing a few gentle movements throughout the day.

Even switching between sitting upright, leaning back and standing occasionally gives your back some variety.

Your workstation should still be reasonably comfortable. Your screen should be easy to see without constantly craning your neck, your feet should be supported, and your chair should allow you to sit without feeling like you're fighting against it.

But don't become obsessed with maintaining a textbook posture.

Strengthening Matters Too

If lower back pain keeps returning, changing your chair alone may not solve the problem.

A good physiotherapy program will often include exercises designed to improve your overall capacity rather than simply stretching the painful area.

Depending on the person, this might include strengthening for the lower back, abdominals, glutes and legs, along with exercises to improve hip and spinal movement.

The goal is to make your body more capable of tolerating the things you actually need to do — including sitting at work, lifting, exercising and getting through a busy day without constantly thinking about your back.

When Should You See a Physio for Lower Back Pain?

Most episodes of uncomplicated lower back pain improve, but physiotherapy can be useful when pain keeps returning, lasts longer than expected or starts interfering with work, sleep or exercise.

At Nano Physiotherapy in Hornsby, we assess what movements and activities are aggravating your symptoms rather than simply telling everyone with back pain to "fix their posture."

Treatment may include manual therapy to help settle pain and stiffness, along with an individualised exercise program to improve movement, strength and confidence.

If you're dealing with lower back pain from sitting or desk work, the answer may not be finding one perfect posture. Often, getting your back moving more regularly and gradually building its capacity is a much better place to start.