Does Core Strength Help Back Pain? The Myth Explained
Back pain is often attributed to a weak core, particularly in fitness culture and popular health advice. Strengthen your abs. Stabilise your spine. Fix the problem. It sounds logical. But research over the past two decades shows that core-strengthening exercises are no more effective than many other forms of exercise for back pain. That doesn’t mean trunk muscles are unimportant. It means the idea that strengthening the core will fix back pain is far too simplistic.
A familiar story
Almost every day, I hear someone talking about their core. Usually, they tell me they need to strengthen it to cure their back pain.
A recent patient, let’s call him Mr B, had been told by a trainer to “build up his core to fix his long-term back problem”.
The advice was simple.
More planks. More crunches.
But his back pain had actually become worse. As he told the story, he pointed to his well-developed abdominal muscles, looking genuinely confused about why he was now sitting in my treatment room in pain.
Advice to strengthen the core is common in fitness and rehabilitation settings, but the assumption that it directly fixes back pain is not well supported by evidence.
It is also worth noting that worsening pain is rarely caused by a single factor. Changes in training load, fear of movement, or normal symptom fluctuation may all play a role.
When most folks think about the ‘core’, they imagine images like the one.
What people mean by “the core”
No fessing up needed, you guessed I’m not too fond of the term ‘core’, it makes me think of the innards of an apple and makes me cringe. Yep, I probably need to get over it and myself, but I will use it for ease of language (for the time being). The core is everything your head, arms, and legs attach to; it’s the whole of your torso or trunk, including the lower back, pelvis, and hips, and should also include the shoulders and buttocks. Scientifically, it’s called the lumbopelvic-hip complex (LPHC).
A useful way to understand the LPHC is to think about it as a group of muscles connected to the spine and pelvis, humans hide many of these muscles deep beneath the exterior musculature that people typically train, i.e. the “super tight six-pack” mister B mentioned above. These were, in fact, rigid and limiting any ability to be functionally mobile and were part of the aggravating factor in his ongoing pain.
Where the idea came from
The modern focus on core stability largely emerged from research in the 1990s.
In 1996, Professor Paul Hodges studied how trunk muscles behaved in people with chronic low back pain. In people without pain, the transversus abdominis tended to activate slightly before arm movement, providing anticipatory support for the spine.
However, this timing pattern was sometimes altered in people with persistent back pain.
Source Hodges PW & Richardson CA. Spine, 1996.
These findings were important, but they were widely simplified into the message:
Strengthen the core. Protect the spine. Fix back pain.
Later research suggests that these changes in muscle timing may reflect protective adaptations to pain rather than simple weakness, and that the relationship between motor control and back pain works in both directions.
Superficial torso muscles are outlined in boxes.
What the evidence actually shows
Many studies have examined whether core strengthening is particularly effective for back pain.
The consistent finding is this:
Core stability exercises produce improvements in pain and function similar to those of general exercise programmes.
Sources Saragiotto BT et al. 2016, British Journal of Sports Medicine Saragiotto BT et al. 2016, Cochrane Database of Systematic Reviews
Exercise helps. But no single muscle group appears to hold the key.
When “stability” becomes over-bracing
Muscle contraction around the trunk increases spinal stiffness. This is normal and often useful when lifting or producing force.
However, constant abdominal bracing can sometimes aggravate symptoms in people with persistent back pain, particularly when guarding or fear of movement is present.
Importantly, not all people with back pain respond the same way. Some show increased muscle guarding, while others show reduced or delayed activation of trunk muscles.
Source van Dieën JH et al. Pain, 2019.
Rehabilitation, therefore, often focuses on restoring natural, reactive muscle activity during movement rather than continuous bracing.
Is planking your way to a stronger core?
Why Pilates can still help
As a Pilates teacher with 25+ years of experience, I regularly see the benefits of structured movement training. Pilates can help people develop strength, coordination and confidence in movement.
My concern is not with Pilates itself, but with the idea that activating or strengthening the core is a single fix for back pain. Pilates programmes often provide graded exposure to movement, progressive strengthening and improved movement confidence. These factors are widely recognised in rehabilitation research as important in recovery from persistent musculoskeletal pain.
The bigger picture of back pain
Persistent low back pain is now understood as a multifactorial condition influenced by biological, psychological and social factors.
Pain can be affected by things such as activity levels, stress, sleep, beliefs about injury and fear of movement.
Sources Hartvigsen J et al. 2018, The Lancet Foster NE et al. 2018, The Lancet
Reducing back pain to a single weak muscle group oversimplifies a complex problem.
What tends to help more
Back pain, whether persistent or recurrent, is best understood as a multifactorial problem. Physical factors matter, but psychological and social influences such as stress, fear of movement and beliefs about injury can also shape how pain develops and persists.
Focusing on core training alone offers a very simple solution to what is usually a complex issue. Many people with back pain receive limited information about the broader factors that influence recovery, which can leave them unsure how to manage their condition.
Rather than obsessing about activating specific muscles, a more helpful approach is to focus on moving regularly and building overall capacity.
Research consistently shows that many forms of exercise can help with back pain. The spine is designed to move and adapt to load, particularly if you spend much of your day sitting or in static positions.
Activities that challenge the body in different ways help develop resilient movement systems. Most people improve through graded exposure to movement, progressive loading and regular physical activity. Find something you enjoy and can do consistently for 30–60 minutes, two to five times a week. Movements such as pushing, pulling, twisting, bending, lifting, and even jumping can help rebuild strength, confidence, and tolerance for everyday activities.
Final thought
The trunk muscles play an important role in movement and stability.
But the idea that strengthening the core will fix back pain is far too simplistic.
Persistent low back pain is better understood as a complex interaction of physical, psychological and social factors, and recovery usually comes from gradually rebuilding movement and load tolerance rather than focusing on a single muscle group
Please note
This information is intended as general guidance and should not replace medical advice, diagnosis, or treatment provided in person by an appropriately trained healthcare professional.
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When most folks think about the ‘core’, they imagine images like the one.
Is planking your way to a stronger core?
