Exercise for Back Pain: How to Build Strength Without Flare-Ups
Updated: Sep 2
Back pain can make exercise feel risky. A common response is either to stop moving because you are worried about making things worse, or to keep pushing through the same programme even when it repeatedly causes large flare-ups. In many cases, a better approach sits between those two extremes: stay as active as you reasonably can, choose a tolerable starting point and build the challenge gradually.
Back pain has many possible causes, so this article provides general information rather than a diagnosis. If your symptoms are new, severe, rapidly worsening or associated with concerning neurological symptoms, seek appropriate medical advice rather than relying on exercise guidance alone.
Should you exercise when you have back pain?
For many episodes of common low back pain, prolonged bed rest is not recommended. NHS guidance advises staying active and continuing normal daily activities where possible. NICE guidance similarly recommends advice that encourages people with low back pain, with or without sciatica, to continue normal activities and says exercise programmes can be considered according to the person's needs, preferences and capabilities.
You can read the currentNHS back pain guidanceandNICE low back pain recommendationsfor more detail.
Why complete rest can be unhelpful
When pain is severe, a short period of reducing aggravating activity may be sensible. The problem comes when fear of pain turns into avoiding movement for long periods. That can reduce strength, fitness and confidence, and make normal activities feel increasingly difficult when you try to return to them.
Staying active does not mean ignoring severe symptoms. It means finding activities and exercise levels that are manageable enough to repeat while your back settles and your capacity improves.
How to choose a starting point
A useful starting programme is one you can recover from. If every session leaves you significantly worse for several days, the exercise dose may be too high. You can often adjust the same movement rather than abandoning exercise completely.
Use a smaller range of movement
Reduce resistance or load
Do fewer repetitions or sets
Slow the movement down and focus on control
Increase rest between exercises or sessions
Choose a different exercise that trains a similar area more comfortably
Do you need to strengthen your core?
There is no single 'core' exercise that everybody with back pain needs. Trunk strength and control can be part of rehabilitation, but so can hip and leg strength, walking, general fitness and gradually rebuilding tolerance for the activities that matter to you.
Exercises such as bridges, controlled squats, sit-to-stands, supported hinging movements or trunk exercises may be useful for some people, but the correct choice depends on the pattern of symptoms and your current ability.
What if exercise causes a flare-up?
A flare-up does not always mean you have caused damage. Back pain can vary and symptoms may change with activity, stress, sleep and many other factors. However, if a particular exercise repeatedly causes a large or prolonged increase in symptoms, reduce the dose or choose another variation rather than repeatedly forcing through it.
It can help to look at the overall response over the next 24 hours rather than judging the exercise only by one moment of discomfort. The aim is to find a level that lets you keep moving and gradually progress.
Is walking good for back pain?
Walking is a practical way to stay active and can often be adjusted easily. If one long walk is too much, try shorter walks more frequently. As symptoms settle, duration and pace can be built gradually. Walking is useful, but it may be combined with strengthening if weakness or reduced physical capacity is limiting daily tasks.
Do you need a scan before exercising?
Not necessarily. NICE advises against routinely offering imaging for low back pain in a non-specialist setting and recommends imaging in specialist care only when the result is likely to change management. A physiotherapy assessment is usually based on your history, symptoms, function and physical examination, with referral onwards if there are reasons to investigate further.
When back pain needs urgent medical attention
Exercise advice is not appropriate for every presentation of back pain. NHS guidance says to call 999 or go to A&E if back pain is accompanied by pain, tingling, weakness or numbness in both legs; loss of feeling around the genitals or anus; changes in bladder or bowel control; certain new sexual-function changes; chest pain; or if the pain started after a serious accident.
Urgent GP or NHS 111 advice is recommended if you feel hot, cold, shivery or generally unwell with back pain, or if severe pain starts suddenly or is getting worse quickly. Check the NHS page linked above for the full current advice.
When to consider physiotherapy
A physiotherapy assessment can be useful when pain is stopping you doing normal activities, you are unsure which movements to continue, symptoms keep returning or you want a clearer plan for rebuilding strength and confidence. Assessment can look at the pattern of symptoms, movement, strength and the physical demands of your work, hobbies and daily life.
Mobile physiotherapy for back pain in South East London
Tom Morgan Physio Solutions provides mobile physiotherapy in Kidbrooke, Blackheath, Greenwich, Eltham and surrounding areas of South East London. If back pain is limiting your movement or you need help building an appropriate rehabilitation plan, you cancheck availability and book a 60-minute physiotherapy assessment online.
For a structured next step, Book a physiotherapy assessment.
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