Strength Training with Lower Back Pain: What's Safe and What to Avoid
Lower back pain affects around 80% of people at some point in their lives — and it's one of the most common reasons people stop exercising. That's exactly backwards. Here's what the research says, what's actually safe, and how to build back up to full training.
The evidence is clear
Decades of research — including large systematic reviews — confirm that staying active and progressively loading the muscles that support the spine leads to better long-term outcomes than rest and avoidance. Rest is not the answer. The right kind of movement is.
Why Rest Is the Wrong Answer
The instinct when your back hurts is to stop moving. It feels logical — rest it, let it heal, come back when it stops hurting. For acute injuries (a sudden strain, a disc flare), a short period of relative rest (2–3 days) can be appropriate. But for most people with persistent or recurring lower back pain, prolonged rest is actively harmful.
Here's why. The lumbar spine is supported by two systems: the passive system (bones, ligaments, discs) and the active system (muscles). When the muscles weaken — through inactivity, poor posture, or avoiding movement out of fear — the passive structures are asked to do a job they weren't designed to do alone. Discs wear faster, joints become irritated, and pain becomes chronic.
The spine also receives nutrition through movement. Unlike most tissues, the intervertebral discs have no direct blood supply — they absorb nutrients through the mechanical pumping action of loading and unloading. Sustained rest starves the discs of the nutrients they need to recover.
Movement — correctly programmed movement — is medicine for the lower back. The goal isn't to avoid load. It's to apply the right load.
Understanding Your Pain: When to See a Doctor First
The vast majority of lower back pain (estimated 90%+) is non-specific — meaning there's no serious structural cause, and it resolves or is significantly improved with exercise. But a small number of presentations do require medical evaluation before you exercise. These are called "red flags":
See a doctor before exercising if you have:
- Pain or numbness radiating down one or both legs past the knee (possible disc herniation with nerve compression)
- Any changes to bladder or bowel function associated with the back pain (this is an emergency — go today)
- Pain that is constant and severe regardless of position or movement
- Back pain following a significant trauma, fall, or accident
- Unexplained weight loss alongside back pain
If none of the above apply to you — and for most people reading this, they won't — you can begin a supervised exercise programme without waiting for a GP referral. In fact, UK NICE guidelines recommend exercise as the primary treatment for non-specific lower back pain.
The Muscles That Actually Protect Your Lower Back
Most people with lower back pain are told to "strengthen their core." That's partially right, but the advice is usually too vague to be useful. Here's a more accurate picture of which muscles matter and why:
Glutes (Gluteus Maximus & Medius)
High priorityThe primary hip extensors. When the glutes are weak, the lumbar spine compensates — becoming hyperextended and overworked during walking, stairs, squatting, and lifting. Glute weakness is found in the majority of people with chronic lower back pain.
Deep Core (Transverse Abdominis, Multifidus)
High priorityThe transverse abdominis is the deep compression wrap around the spine. The multifidus provides segmental stability at each vertebral level. Both are frequently inhibited by pain — the body's protective response that unfortunately perpetuates the problem.
Hamstrings
Medium priorityTight hamstrings pull on the pelvis, causing posterior pelvic tilt and increased lumbar flexion during movement. Weak hamstrings shift load onto the lower back during hip hinge and pulling movements.
Hip Flexors (Iliopsoas)
Medium priorityOften shortened through prolonged sitting. Tight hip flexors tilt the pelvis anteriorly, increasing lumbar lordosis and compressive load on the posterior elements of the spine. Stretching and strengthening in balance is key.
Spinal Erectors
Medium prioritySupport the lumbar spine against compressive and shear forces. Contrary to old thinking, these muscles need to be loaded and strengthened — not rested. Deadlifts and RDLs are the most effective erector exercises.
Obliques (Internal & External)
Medium priorityProvide rotational stability and work alongside the transverse abdominis to maintain intra-abdominal pressure during lifting. Anti-rotation exercises (Pallof press) train these without risky spinal loading.
Safe Exercises: Start Here
These exercises have strong evidence for lower back pain rehabilitation and present low risk when performed with correct technique.
Dead Bug
Trains deep core stabilisers (transverse abdominis) without spinal flexion or compression. The contralateral arm/leg movement pattern challenges stability in the safest possible way.
Progression: Bodyweight → add light ankle weights → add resistance band
Glute Bridge / Hip Thrust
Directly strengthens the glutes and hamstrings — the muscles most responsible for taking load off the lumbar spine during everyday movement. Zero spinal compression.
Progression: Bodyweight bridge → single-leg bridge → barbell hip thrust
Pallof Press
Anti-rotation core exercise. Teaches the spine to resist unwanted movement rather than create it — the most functional form of core training for back pain.
Progression: Light band, slow tempo → heavier band → cable machine
Romanian Deadlift (RDL)
Hip hinge with a neutral spine. Strengthens the posterior chain (glutes, hamstrings, erectors) without the spinal flexion risk of conventional deadlifts when form breaks down.
Progression: Bodyweight hip hinge → light dumbbell RDL → barbell RDL
Plank (and variations)
Isometric core exercise with minimal spinal load. Particularly effective for building endurance in the deep stabilising muscles.
Progression: Knee plank → full plank → plank with arm/leg lifts
Banded Clamshell
Targets the gluteus medius — a commonly weak muscle that causes compensatory movement patterns and increased lumbar load during walking, stairs, and lifting.
Progression: Light band → medium band → weighted clamshell
Cable Row (seated, neutral spine)
Upper back and rowing strength without loading the lumbar spine. Keeps the posterior chain balanced and reduces the forward-head, rounded-shoulder posture that often accompanies desk-based lower back pain.
Progression: Light cable → moderate cable → single-arm variation
Step-Up
Single-leg lower body exercise that builds glute strength and hip stability without the axial loading of squats. Excellent transition exercise before returning to bilateral loaded squats.
Progression: Bodyweight low step → higher step → dumbbell step-up
Exercises to Avoid (Initially)
"Avoid" doesn't mean "never" — it means these exercises carry significant risk before adequate stability is established, and the alternatives achieve the same goal more safely.
Loaded spinal flexion (sit-ups, crunches)
Repeated flexion under load places high compressive and shear stress on the lumbar discs. Stuart McGill's biomechanical research clearly associates loaded flexion with disc herniation and facet joint irritation.
Better option: Dead bugs, planks, and Pallof presses train the core without flexion.
Toe-touches and standing forward folds under load
Combines spinal flexion with a long lever arm, dramatically increasing disc pressure. Even without external load, this position aggravates already-irritated lumbar structures.
Better option: Hip hinge to a box (keeps the spine long) or seated hamstring stretch.
Russian twists with weight
Loaded rotation combined with spinal flexion — a high-risk combination for the lumbar discs. Particularly problematic with the feet raised (which increases lumbar compression further).
Better option: Pallof press (anti-rotation) or woodchop from a standing position with light load.
Heavy squats before adequate stability is established
Axial loading through the spine requires robust core stability to be safe. Jumping into heavy squats without first building that foundation causes compensatory patterns — usually excessive forward lean — that overload the lumbar.
Better option: Goblet squat, box squat, or step-ups while core stability develops.
High-impact plyometrics
Ground reaction forces during box jumps and burpees can spike spinal load significantly — particularly problematic during a flare-up or when core control is compromised.
Better option: Low-impact alternatives: step-ups, cycling, swimming, walking.
Good mornings with heavy load
Extreme spinal flexion under load through a long lever arm. Even experienced lifters with healthy backs use this exercise cautiously. With back pain, the risk-reward ratio is very poor.
Better option: Romanian deadlift with a neutral spine achieves the same posterior chain benefits safely.
A Phased Return to Full Training: 12-Week Framework
This is a general framework — individual timelines vary depending on the nature of your pain, your training history, and how you respond. Some people move through phases faster; others need longer. That's fine. The goal is to build a back that doesn't hurt, not to hit an arbitrary deadline.
Goal: Restore pain-free movement, activate deep stabilisers, establish a baseline
Exercises
- Dead bug (3×8 each side)
- Glute bridge (3×15)
- Banded clamshell (3×15 each side)
- Plank (3×20–30 seconds)
- Walking (20–30 min daily)
Loading
Bodyweight only — no external loading until movement is pain-free and stable
⚠ Watch for
If any exercise provokes sharp or radiating pain, stop and reassess
Goal: Add load progressively, introduce hip hinge pattern, improve posterior chain strength
Exercises
- Dumbbell RDL (3×10)
- Hip thrust with barbell or dumbbell (3×12)
- Pallof press (3×10 each side)
- Step-up (3×10 each leg)
- Cable row (3×12)
- Plank progressions
Loading
Light-to-moderate — prioritise form over weight; no ego lifting
⚠ Watch for
Soreness in the muscles is normal; pain in the spine or joints is not
Goal: Reintroduce compound lifts, increase load systematically, build long-term resilience
Exercises
- Conventional or Romanian deadlift (progressive loading)
- Goblet squat progressing to barbell squat
- Bench press or push-up variations
- Pull-up or lat pulldown
- Overhead press (if tolerated)
Loading
Progressive overload resumes — but never sacrificing form for weight
⚠ Watch for
Most people reach this phase without back pain at all; some take longer — that's fine
5 Common Mistakes People Make When Training with Back Pain
1. Skipping Phase 1 and going straight to heavy lifting
The temptation to skip the 'boring' stability work and get back to proper training is understandable. It's also the fastest route back to a flare-up. The deep stabilisers need reactivating before you add external load — there are no shortcuts here.
2. Using pain as the only guide
Some discomfort during rehab exercise is expected and appropriate — the muscles are being challenged. Using pain as a binary on/off switch is too crude. The question is whether it's muscular soreness (acceptable) or joint/nerve pain (stop and reassess).
3. Only training the core and ignoring the glutes
Planks and dead bugs address one piece of the puzzle. Without strong glutes, the lumbar spine will continue to compensate. Glute training is non-negotiable for lower back rehab.
4. Going back to normal training the moment pain subsides
Pain-free does not mean fully recovered. The muscles that protect your back need weeks of progressive loading to return to adequate strength — even after pain disappears. Returning to heavy deadlifts or squats the moment you feel better almost always causes a setback.
5. Training without addressing the lifestyle factors
Training twice a week won't undo 50 hours of poor sitting posture, inadequate sleep, or chronic stress. Back pain is multi-factorial. The programme must be supported by attention to posture, sleep quality, daily movement (walking), and stress management.
The Deadlift Question
The deadlift has an unfair reputation as a back-wrecker. The reality is that a correctly performed deadlift — with a neutral spine, braced core, and weight driven through the heels — is one of the most effective exercises for building the posterior chain that supports the lower back.
The Romanian deadlift (RDL) is typically the better starting point for people with back pain because it emphasises the hip hinge without the full range of motion that can expose lumbar flexion weaknesses. Once you can perform 3 sets of 12 RDLs with a moderate dumbbell load using a fully neutral spine, the transition to conventional deadlifts is usually straightforward.
The key variable is technique. A deadlift with a rounded lower back compounds spinal load. With a neutral spine and a braced core, the same movement actively decompresses the discs relative to poor posture in everyday life. Technique is everything — which is why this is one exercise where coaching genuinely matters.
Want a Programme Built Around Your Back?
DC Personal Trainer works with clients from Hale, Bowdon, Sale, and Altrincham who have lower back pain, disc issues, or a history of back injury. Every programme starts with a movement assessment so we know exactly what's safe for you — and what will actually fix the problem.
Private studio in Sale M33 · Home visits to Hale & Altrincham
Frequently Asked Questions
Can I do strength training with lower back pain?
Yes — in most cases, carefully programmed strength training is one of the best things you can do for lower back pain. Decades of research confirm that staying active and progressively loading the muscles that support the spine leads to better long-term outcomes than rest. The key is starting with appropriate loads, avoiding exercises that provoke sharp or radiating pain, and building a foundation of core stability before moving to heavier compound lifts. Working with a qualified personal trainer ensures the programme is appropriate for your specific situation.
What exercises should I avoid with lower back pain?
The exercises most commonly associated with aggravating lower back pain are: heavy spinal flexion under load (e.g. sit-ups, traditional crunches, rounding the back during deadlifts or bent-over rows), high-impact plyometrics before adequate core stability is established, and loaded spinal rotation (e.g. Russian twists with a heavy plate). However, 'avoid' is relative — an exercise that aggravates one person's back may be fine for another, depending on the cause and nature of their pain. A thorough movement assessment is the most reliable way to determine what's safe for you individually.
Will lifting weights make my lower back pain worse?
Poorly programmed lifting can aggravate back pain, but correctly programmed strength training almost never makes it worse and usually makes it significantly better. The mechanism is straightforward: stronger glutes, hamstrings, and spinal erectors reduce the compressive load on the vertebral discs and facet joints during everyday movement. Most people with chronic lower back pain who start a supervised strength programme report measurable improvement within 6–8 weeks.
What is the best exercise for lower back pain?
There is no single best exercise — back pain is caused by many different things, and the ideal programme depends on the cause. That said, the exercises with the strongest evidence base for lower back pain rehabilitation and prevention are: hip hinge patterns (deadlifts and Romanian deadlifts with appropriate load), glute training (hip thrusts, bridges), core anti-rotation and anti-flexion exercises (dead bugs, Pallof presses, planks), and walking. These build the posterior chain and deep stabilising muscles that support the lumbar spine.
Should I see a doctor before exercising with lower back pain?
If you have any of the following, see a doctor before beginning an exercise programme: pain or numbness that radiates down one or both legs past the knee (possible nerve involvement), bladder or bowel changes associated with the pain (medical emergency — see a doctor today), pain that is constant and severe with no change in position, or pain following a trauma or fall. For the majority of people with general lower back pain — aching, stiffness, or discomfort that changes with position — starting a carefully supervised exercise programme is appropriate without waiting for a GP referral.
Is there a personal trainer in Hale or Sale who works with clients with back pain?
DC Personal Trainer works regularly with clients from Hale WA15, Bowdon WA14, Sale M33, and Altrincham WA14 who have lower back pain, disc issues, or a history of back injury. Sessions are at the private studio in Sale M33 or at your home. The approach begins with a movement assessment to identify weaknesses and any exercises to avoid, followed by a progressive programme that builds the strength and stability needed to resolve or manage your back pain long-term.