Lower back pain from sitting

Lower back pain from sitting is the complaint most desk workers know best: an ache across the base of the spine that builds through the day and makes the first steps out of the chair feel stiff. It is extremely common. The World Health Organization estimates that 619 million people had low back pain in 2020, that it is the single leading cause of disability worldwide, and that about 90% of cases are non-specific, meaning no specific disease or structural problem can be found to explain the pain (WHO, 2023). Sitting usually gets the blame. The research tells a more careful story, and it changes what is worth doing about it.

What lower back pain from sitting feels like

People describe a dull ache or tightness low in the back, sometimes more on one side, sometimes spreading into the buttocks. It often:

• builds over a long stretch of sitting, in a car as much as at a desk
• feels stiff when you first stand up, then eases as you walk
• changes as you shift position, lean back or get up
• comes and goes over weeks or months rather than staying the same

The muscles alongside the spine, the erector spinae, are often where people feel it, although in non-specific back pain it is rarely possible to say which structure is the source.

This is different from sciatica, where the pain, numbness or tingling runs into the bottom and down the back of one leg, often to the foot and toes (NHS). Sciatica has its own warning signs, covered below.

Does sitting cause lower back pain?

This is where it pays to look at what different kinds of studies found.

• Older reviews found no clear link. A review of 35 reports on sitting at work found that, regardless of quality, all but one failed to find a positive association with low back pain. The better studies even found slightly less back pain among sitters than among people whose jobs involved standing, driving, lifting or bending (Hartvigsen et al., 2000). A later review of 15 cohort and case-control studies concluded that a sedentary lifestyle by itself was not associated with low back pain (Chen et al., 2009).
• Self-reported sitting shows a link. A 2021 meta-analysis found that people who said they sat a lot at work had 1.47 times the odds of low back pain. But when sitting was measured with devices, the findings were inconsistent, and in tradespeople more measured sitting went with less back pain over time. The authors noted that the cross-sectional studies could not rule out reverse causation, where people with back pain end up sitting more (Dzakpasu et al., 2021).
• Sitting plus vibration is different. A review of jobs that involve sitting for more than half the working day found that sitting alone was not linked to a higher risk. When whole-body vibration and awkward postures were added, the risk increased fourfold. Helicopter pilots had the strongest association (Lis et al., 2007). If you drive for a living, see our page for professional drivers.
• Standing is not the cure either. In a meta-analysis of 49 studies, standing for more than four hours of the workday was linked with 1.31 times the odds of low back symptoms (Coenen et al., 2018).

Put together, the evidence does not support the idea that sitting is uniquely harmful to the back. A fairer reading is that a lot of time in any one position, sitting or standing, goes together with more back symptoms, and that the context of the sitting, such as vibration and awkward positions, matters. If you want a sense of how much of your week you spend seated, try the sitting time calculator, or read how much of your year you spend sitting.

Is it your posture?

Many people assume that slouching is the problem and that the cure is sitting up straight. The research does not back that up as firmly as you might expect.

A review of 41 systematic reviews found both positive and null associations between low back pain and spinal posture, sitting, standing, bending, twisting and awkward postures. Meta-analyses tended to find associations, but the evidence that these exposures come before a first episode of back pain, or that more exposure means more pain, was mixed. The authors concluded that there is no consensus that any of them causes low back pain (Swain et al., 2020).

Professionals do not agree on an ideal sitting posture either. When 544 physiotherapists were shown seven sitting postures, most chose some version of upright sitting with a curve in the lower back, yet the authors pointed out the lack of strong evidence that any specific posture leads to better health (Korakakis et al., 2019).

The same goes for the popular idea that sitting tightens the hip flexors, which then pull on the lower back. A systematic review of 24 studies comparing people with and without non-specific low back pain found only very low-quality evidence for any link between limited hip movement and back pain. The only movement that showed a difference was inward rotation of the hip (Avman et al., 2019).

None of this means posture is irrelevant for everyone. It means that chasing one correct position is unlikely to be the answer, and that comfortable variety is a better goal.

What else raises the risk

The WHO lists low physical activity, smoking, obesity and high physical stress at work as risk factors for non-specific low back pain (WHO, 2023). For desk workers, the first one is worth dwelling on. A desk job does not have to mean an inactive life, but the hours of sedentary behaviour at work and at home add up.

Back pain also has a habit of returning, and here sitting time does show up. A review of 11 primary care studies found that 65% of people still reported some pain a year after an episode began (Itz et al., 2013). In a cohort of 250 people who had just recovered, 69% had another episode within 12 months. Sitting for more than five hours a day, frequent awkward postures and more than two previous episodes all predicted a recurrence (da Silva et al., 2019). We go through what that means in Will back pain go away on its own?

What the research says helps

For non-specific lower back pain, the guidance from NICE is clear on what to start with. It recommends information and advice to help people manage their own back pain, encouragement to continue normal activities, and, for an episode or flare-up, considering a group exercise programme, which can be biomechanical, aerobic, mind and body, or a mix, chosen around the person’s needs, preferences and capabilities (NICE NG59). It also says:

• manual therapy such as manipulation or massage should only be considered as part of a package that includes exercise
• belts and corsets, foot orthotics, traction, acupuncture, ultrasound and TENS should not be offered for low back pain
• imaging should not routinely be offered outside specialist settings

The NHS advice for back pain at home points the same way: stay active, avoid long periods in bed, try exercises and stretches and stop if they make the pain worse, and use heat for stiffness or ice for swelling. Walking, swimming, yoga and pilates may help. It also notes that paracetamol alone is not recommended for back pain, so ask a pharmacist or GP about pain relief (NHS).

The research on exercise is large:

• For pain that has lasted more than 12 weeks, a Cochrane review of 249 trials found moderate-certainty evidence that exercise reduces pain compared with no treatment, usual care or placebo, by about 15 points on a 100-point scale at first follow-up. That is a clinically important difference. The effect on day-to-day function was smaller (Hayden et al., 2021).
• For preventing the next episode, a meta-analysis of 21 trials with 30,850 people found moderate-quality evidence that exercise combined with education cut the risk of a new episode of low back pain by about 45%. Exercise alone may cut it by about a third, though the evidence for that was lower quality. Education alone, back belts and shoe insoles did not appear to prevent back pain (Steffens et al., 2016).

The trials used many different programmes, and NICE leaves the choice of type to the person’s needs and preferences. What the evidence rewards is doing it regularly. Our article Is two minutes of exercise enough? looks at why the lower back may need more time than the neck. The exercises themselves are not described here. They are what a physiotherapist tailors, or what you will find in a guided programme.

Changing how you sit and work

Workstation changes will not replace exercise, but they can cut long unbroken spells of sitting, which is the pattern most worth changing.

• Sit-stand desks reduce sitting. In a Cochrane review, sit-stand desks reduced sitting at work by about 100 minutes per workday in the short term and by about 57 minutes at three to twelve months. The evidence was low quality, and there were no data beyond a year (Shrestha et al., 2018).
• They may ease discomfort a little. A meta-analysis of eight studies found a small reduction in low back discomfort with sit-stand desks among people without back pain, roughly 0.3 to 0.5 points on a 10-point scale. People who already had back pain had not been studied well (Agarwal et al., 2018).
• Short, frequent breaks. In one study in the Cochrane review, breaks of one to two minutes every half hour reduced sitting by about 40 minutes a day compared with two 15-minute breaks, though the evidence was low quality (Shrestha et al., 2018). See microbreaks for how to build them into the day.
• A chair that fits you. See how to set up your office chair, use the desk height calculator for a starting point, and check our home office set-up guide if you work from a kitchen table.

Remember that standing all day has its own link with back symptoms (Coenen et al., 2018). Alternating is the aim, not swapping one fixed position for another.

When to see a doctor about lower back pain

Most lower back pain from sitting is not dangerous. These signs need medical attention.

Call an ambulance (999 in the UK, 911 in the US and Canada, 000 in Australia) or go to A&E if your back pain comes with

• pain, tingling, weakness or numbness in both legs
• loss of feeling around the genitals or bottom
• changes in bladder or bowel control, including incontinence
• changes in sexual sensation or function
• chest pain
• a start after a serious accident, such as a car crash (NHS)

The NHS gives the same emergency advice for sciatica on both sides, or weakness or numbness in both legs that is severe or getting worse (NHS).

Get an urgent GP appointment or call 111 if

• you feel hot, cold, shivery or generally unwell with your back pain
• the pain is severe and started suddenly, or is getting worse quickly (NHS)
• you have, or have had, cancer and develop back pain that is severe, getting steadily worse or waking you at night. NICE asks clinicians to get specialist advice within 24 hours in this situation (NICE NG234)

See a GP if

• the pain has not improved after a few weeks, stops you doing everyday things, or worries you
• you have unexplained weight loss, a lump or swelling, or a change in the shape of your back
• the pain does not improve with rest or is worse at night
• it gets worse when you sneeze, cough or open your bowels (NHS)
• sciatica has not improved after a few weeks, is getting worse, or stops you doing normal activities (NHS)

One pattern is easy to mistake for desk-related pain. NICE advises referral to a rheumatologist for possible axial spondyloarthritis when back pain started before the age of 45, has lasted more than three months, and comes with four or more of the following (or three, plus a positive blood test for HLA-B27): it started before 35, it wakes you in the second half of the night, you have buttock pain, it improves with movement, it improves within 48 hours of anti-inflammatory painkillers, or you have a close relative with spondyloarthritis, or a history of arthritis, enthesitis or psoriasis (NICE NG65). Back pain that improves with movement and wakes you in the early hours is worth mentioning to your GP for that reason. The WHO also notes that some back pain is referred from other organs, such as the kidneys or an aortic aneurysm (WHO, 2023), which is another reason to get pain checked when it does not behave like the usual desk ache.

If you are weighing up seeing a physiotherapist privately, our guide to how much physiotherapy costs covers the UK, US, Canada and Australia.

How Bavelu fits

Bavelu’s lower back sessions are designed and filmed by physiotherapists, led by Mgr. Lukáš Kučera, and need no equipment: you do them on a chair or a mat. A short questionnaire about where it hurts, how much, for how long and how many hours you spend at a computer builds your plan, and each daily session comes in a short and a full version. It is exercise guidance, not a diagnosis or a treatment, so if any of the warning signs above apply, see a doctor first.